A split modular plasma hazardous waste melting furnace

Abstract

The invention discloses a split modular plasma hazardous waste melting furnace, comprising an upper furnace body and a lower furnace body; the upper furnace body and the lower furnace body adopt a maze structure, and the joints between the two are filled with non-baking chromium-containing refractory mud for sealing; the furnace side module I and the furnace side module II are arranged in a ring shape inside the lower furnace body, and a water-cooled column is provided between the furnace side module I and the furnace side module II, and the adjacent furnace side module II, and an inlaid locking structure is provided; a furnace bottom module I is provided at the center of the inner bottom of the lower furnace body, and furnace bottom modules II and furnace bottom modules III are arranged in a ring shape around the inner bottom, and the interface between the furnace bottom module I and the furnace bottom module II and the furnace bottom module III is a two-level stepped maze structure, and the upper ends of the furnace side modules I and the furnace side modules II and the upper furnace body are male-female structures, and the lower ends thereof are in a two-level stepped maze structure with the interface between the furnace bottom modules II and the furnace bottom modules III. The overhaul cycle of the invention is controlled within 10 days, which has an order of magnitude improvement in the economic efficiency of the project.

Description

Technical Field

[0001] The invention relates to the field of plasma technology, and in particular to a split modular plasma hazardous waste melting furnace. Background Art

[0002] Plasma technology for treating hazardous waste is internationally recognized as the most advanced treatment technology. This technology utilizes the high temperature characteristics of plasma to convert almost 100% of solid waste into recyclable by-products, solidify heavy metals, and completely destroy dioxins, truly achieving harmless treatment and resource utilization of hazardous waste.

[0003] With the continuous promotion and application of plasma technology in the field of hazardous waste disposal, the industrial maturity of its supporting equipment has become a direction that the industry needs to continuously conquer and optimize; as the core equipment of plasma technology in the field of hazardous waste disposal, the maturity of the plasma melting furnace is directly related to the operating efficiency, safety and economy of the project.

[0004] The high temperature generated by plasma and the complex environment of hazardous waste melting require refractory materials to support, but: 1) Existing refractory materials have a certain life cycle and need to be regularly inspected and replaced. For industrial furnaces of a certain scale, the replacement of refractory materials has a long cycle of more than one month. The long cycle and poor economic efficiency seriously affect the operation efficiency and economy of the project; 2) The life of the gas phase refractory of the melting furnace is generally much longer than that of the molten pool refractory. Because most of the structures are integral, when the molten pool refractory needs to be overhauled, it also needs to be removed together with the gas phase refractory, which is poor in economy; 3) The expansion coefficients of the new and old refractory materials are inconsistent. The traditional casting method has a certain feasibility, which will cause structural cracking and affect the life of the furnace. In severe cases, it will cause safety accidents and cause major economic losses; 4) In terms of the performance of refractory materials, in addition to the formula, baking after the construction is completed also plays a decisive role. At present, burners are used for baking, but the burner is a single-point spray, and the heat flow in the furnace cannot be evenly spread. There are weak areas, and the uniformity and effectiveness of refractory baking are difficult to accurately consider. Therefore, the above problems need to be solved urgently. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a split modular plasma hazardous waste melting furnace, the overhaul period of which can be controlled within 10 days, which has an order of magnitude improvement on the economic efficiency of the project.

[0006] In order to solve the above technical problems, the present invention adopts the following technical scheme: a split modular plasma hazardous waste melting furnace of the present invention, its innovation point is: it includes an upper furnace body, a lower furnace body, a water-cooling column, a furnace side module I, a furnace side module II, a furnace bottom module I, a furnace bottom module II, a furnace bottom module III and a temperature sensing element; the upper furnace body and the lower furnace body are connected by a maze structure, and the joints between the two are filled with unbaked chromium-containing refractory mud for sealing; the furnace side module I and several furnace side modules II are arranged in a ring shape inside the lower furnace body, and water-cooling columns are respectively provided between the furnace side module I and the furnace side module II, and between adjacent furnace side modules II, and respectively The furnace bottom module I is provided at the center of the inner bottom of the lower furnace body, and the furnace bottom module II and several furnace bottom modules III are arranged in a circular array around the inner bottom of the lower furnace body, and the furnace bottom module I is respectively connected with the corresponding furnace bottom module II and the furnace bottom module III at the interface in a two-level stepped maze structure, and the upper end of each furnace side module I and furnace side module II is respectively connected with the bottom of the upper furnace body in a male-female structure, and the lower end thereof is respectively connected with the corresponding furnace bottom module II and the furnace bottom module III at the interface in a two-level stepped maze structure; the temperature sensing elements are evenly arranged at the bottom joints of the furnace bottom module I, the furnace bottom module II, and the furnace bottom module III;

[0007] The upper furnace body is of an integral type and can be hoisted and replaced as a whole, and includes an upper steel shell, a first large flange and refractory materials; a first large flange is coaxially sleeved on the outer side of the bottom of the upper steel shell, and refractory materials are arranged inside the flange, the bottom of the refractory materials is a male-female groove structure, and the upper ends of each of the furnace side modules I and the furnace side modules II are respectively connected to the bottom of the refractory materials of the upper furnace body in a male-female structure; a feed port, a generator interface and a flue gas outlet are sequentially spaced apart on the same vertical plane at the top of the upper steel shell;

[0008] The lower furnace body comprises a lower steel shell, a second large flange, a water-cooling jacket and a centering block; a second large flange is coaxially sleeved on the outer side of the top of the lower steel shell, and a water-cooling jacket is coaxially sleeved on the inner side of the bottom, and the water-cooling jacket covers the entire inner bottom of the lower steel shell and the lower side thereof; the lower steel shell is screwed and fixed to the upper steel shell through the docking of the first large flange and the second large flange, and the two are connected by a labyrinth structure; the centering block is in a conical structure, and is arranged at the center of the inner bottom of the lower steel shell, and wrapped around the bottom of the furnace bottom module I;

[0009] Each of the water-cooled columns comprises a column, a high-temperature resistant alloy cladding layer I, a primary cooling water pipe, a secondary cooling water pipe and a quick-connect connector; each of the columns is made of a copper-steel composite material, and its cross-section is a rectangular structure; concave guide fixing grooves are symmetrically arranged on the rectangular long sides of each of the columns, and form a male-female fit with the corresponding furnace side module I and the corresponding furnace side module II, respectively, to guide and support the rapid installation and positioning of the furnace side module I and the furnace side module II; a high-temperature resistant alloy cladding layer I is provided on the outer upper surface of each of the columns, and a primary cooling water pipe and a secondary cooling water pipe are vertically arranged therein at intervals, and the upper and lower ends of each of the primary cooling water pipe and the secondary cooling water pipe extend vertically out of the corresponding column toward the inner side of the corresponding column, and the lower side thereof is a water inlet end, and the upper side thereof is a water outlet end, and quick-connect connectors are provided at the water inlet end and the water outlet end, respectively, and each of the quick-connect connectors is provided with a male-female structure;

[0010] The furnace side module I is arranged on the side opposite to the feed port, and includes a refractory structure I, a water-cooled component I, a high-temperature resistant alloy cladding layer II, a refractory structure II and a water-cooled induction coil; the refractory structure I is arranged on the outside of the water-cooled component I, and its two sides are in a maze structure, one side is convex and the other side is concave; the water-cooled component I is in an arc-shaped structure, and convex structures are arranged on both sides, and they are in a male-female structure with the concave guide fixing groove corresponding to the water-cooled column; the water-cooled component I adopts a copper-steel load structure, and an S-shaped water-cooling pipeline I is arranged therein, and the water inlet and water outlet of the water-cooling pipeline I respectively extend vertically out of the water-cooled component I toward the outside of the water-cooled component I, and the water inlet and water outlet of the water-cooled pipeline I are also divided into A quick plug is provided; a high-temperature resistant alloy cladding layer II is provided on the inner side of the water-cooled component I, and the high-temperature resistant alloy cladding layer II is arranged in multiple layers; a refractory structure II is also provided on the inner side of the water-cooled component I and the high-temperature resistant alloy cladding layer II, and the bottom of the refractory structure II is connected to the water-cooled jacket and the furnace bottom module II, and the interface between the refractory structure II and the furnace bottom module II is connected in a two-level stepped maze structure, and the joint between the two is filled with unbaked chromium-containing refractory mud for sealing; a high-temperature resistant alloy flow port is provided in the middle of the furnace side module I, and the high-temperature resistant alloy flow port penetrates the furnace side module I at a certain angle, and is an expansion structure close to the inner side of the furnace, and a water-cooled induction coil is wrapped around the high-temperature resistant alloy flow port;

[0011] Each of the furnace side modules II adopts the same type and size structure as the furnace side module I, and they all include a refractory structure III, a water-cooled component II, a high-temperature resistant alloy cladding layer III and a refractory structure IV; each of the refractory structures III is arranged on the outside of the corresponding water-cooled component II, and its two sides are in a maze structure, one side is convex and the other side is concave; each of the water-cooled components II is in an arc-shaped structure, and convex structures are arranged on both sides, and they are in a male-female structure with the concave guide fixing groove of the corresponding water-cooled column; the water-cooled component II adopts a copper steel load structure, and an S-shaped water-cooling pipeline II is arranged therein, and the water inlet and outlet of each of the water-cooling pipeline II are respectively facing the outside of the water-cooled component II The corresponding water-cooled component II is extended vertically in the direction, and quick plugs are respectively provided at the water inlet and outlet of each water-cooling pipeline II; a high-temperature resistant alloy cladding layer III is provided on the inner side of each water-cooled component II, and each high-temperature resistant alloy cladding layer III is arranged in multiple layers; a refractory structure IV is also provided on the inner side of each water-cooled component II and the corresponding high-temperature resistant alloy cladding layer III, and the bottom of each refractory structure IV is respectively connected to a water cooling jacket and a corresponding furnace bottom module III, and the interface between each refractory structure IV and the corresponding furnace bottom module III is connected in a two-level stepped maze structure, and the joint between the two is filled with unbaked chromium-containing refractory mud for sealing.

[0012] Preferably, the furnace bottom module I has a circular stepped structure, and its stepped surface is a plurality of maze structures; a conical positioning hole is opened in the bottom center of the furnace bottom module I, and the furnace bottom module I is connected to the centering block in a male-female structure through the conical positioning hole; the furnace bottom module II is arranged on the side relative to the furnace side module I, and it is fan-shaped, with stepped structures on all four sides, and a plurality of maze structures are arranged on the stepped surface; each of the furnace bottom modules III adopts the same type and size structure as the furnace bottom module II, it is fan-shaped, with stepped structures on all four sides, and a plurality of maze structures are arranged on the stepped surface, and it is assembled into a circle with the furnace bottom module II.

[0013] Preferably, it also includes several water inlet and outlet pipes, and each of the water inlet and outlet pipes includes a water inlet main pipe, a water outlet main pipe and a connecting hose; the several water inlet main pipes and the water outlet main pipes are arranged in a ring shape around the lower steel shell of the lower furnace body, and are respectively connected to the quick-connect plugs of the corresponding water-cooling columns, furnace side module I and furnace side module II through connecting hoses.

[0014] Preferably, the temperature sensing elements include outer arc seam temperature sensing elements, inner arc seam temperature sensing elements and straight seam temperature sensing elements; the outer arc seam temperature sensing elements are arranged in a circular array at the bottom of the seam between the furnace side module I, furnace side module II and the furnace bottom module II, furnace bottom module III; the inner arc seam temperature sensing elements are arranged in a circular array at the bottom of the seam between the furnace bottom module I and the furnace bottom module II, furnace bottom module III, and run through the entire seam; the straight seam temperature sensing elements are arranged at the bottom of the seam between the furnace bottom module II and the furnace bottom module III, as well as at the bottom of the seam of the adjacent furnace bottom module III.

[0015] Preferably, a furnace bottom support is vertically provided at the bottom of the lower steel shell of the lower furnace body, and the entire melting furnace is supported by the furnace bottom support.

[0016] Beneficial effects of the present invention:

[0017] (1) The overhaul period of the melting furnace of the present invention can be controlled within 10 days, which has an order of magnitude improvement in the economic efficiency of the project;

[0018] (2) The melting furnace of the present invention can selectively replace and repair the refractory structure quickly, and there is no need to replace the refractory as a whole during overhaul;

[0019] (3) The refractory materials of the modular components of the present invention have been fully baked before leaving the factory, with a high performance achievement rate, avoiding the existence of weak points in the refractory materials, thereby effectively improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is an assembly elevation view of a split modular plasma hazardous waste melting furnace according to the present invention.

[0022] Figure 2 This is a top view of the overall assembly of a split modular plasma hazardous waste melting furnace of the present invention.

[0023] Figure 3 for Figure 2 Schematic diagram of water cooling pipeline I in module I on the middle furnace side.

[0024] Figure 4 for Figure 2 Schematic diagram of water cooling pipeline II in module II on the middle furnace side.

[0025] Figure 5 for Figure 2 Schematic diagram of AA.

[0026] Figure 6 for Figure 1 Schematic diagram of medium DD.

[0027] Figure 7 for Figure 6 Schematic diagram of the inner and outer arc seam temperature sensing elements.

[0028] Figure 8 for Figure 6 Schematic diagram of the straight seam temperature sensing element.

[0029] Among them, 1-upper furnace body; 2-lower furnace body; 3-furnace side module I; 4-furnace side module II; 5-water cooling column; 6-water inlet and outlet pipes; 7-feeding port; 8-generator interface; 9-smoke outlet; 10-water cooling jacket; 11-centering block; 12-furnace bottom module I; 13-furnace bottom module II; 14-furnace bottom module III; 15-outer arc seam temperature sensing element; 16-inner arc seam temperature sensing element; 17-straight seam temperature sensing element; 18-furnace bottom bracket; 31-refractory structure I; 3 2-water-cooled component I; 33-high-temperature alloy cladding layer II; 34-refractory structure II; 35-high-temperature alloy flow port; 36-water-cooled induction coil; 41-refractory structure III; 42-water-cooled component II; 43-high-temperature alloy cladding layer III; 44-refractory structure IV; 51-column; 52-high-temperature alloy cladding layer I; 53-primary cooling water pipe; 54-secondary cooling water pipe; 55-quick-connector; 61-water inlet pipe; 62-water outlet pipe; 63-connecting hose. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below through specific implementation methods.

[0031] A split modular plasma hazardous waste melting furnace of the present invention comprises an upper furnace body 1, a lower furnace body 2, a water-cooling column 5, a furnace side module I3, a furnace side module II4, a furnace bottom module I12, a furnace bottom module II13, a furnace bottom module III14 and a temperature sensing element; the specific structure is as follows Figure 1 , Figure 2 As shown, the upper furnace body 1 and the lower furnace body 2 are connected by a labyrinth structure, and the joint between the two is filled with unbaked chromium-containing refractory mud for sealing; wherein, the upper furnace body 1 is integral and can be hoisted and replaced as a whole, and it includes an upper steel shell, a first large flange and refractory materials; as shown Figure 1 , Figure 2As shown, a first large flange is coaxially sleeved on the outer side of the bottom of the upper steel shell, and a refractory material is arranged inside the flange. The bottom of the refractory material is a male-female groove structure, and the upper end of each furnace side module Ⅰ3 and furnace side module Ⅱ4 is respectively connected to the bottom of the refractory material of the upper furnace body 1 in a male-female structure; a feed port 7, a generator interface 8 and a flue gas outlet 9 are sequentially spaced on the same vertical plane at the top of the upper steel shell. During construction, the present invention fills the joint with unbaked chromium-containing refractory mud for sealing, and combined with the labyrinth structure, the sealing can be effectively achieved. The upper furnace body 1 and the lower furnace body 2 are independent of each other, and the maintenance does not interfere with each other, and can be repaired and replaced separately, thereby improving the economy.

[0032] The lower furnace body 2 includes a lower steel shell, a second large flange, a water cooling jacket 10 and a centering block 11; Figure 1 , Figure 2 As shown, a second large flange is coaxially sleeved on the outer side of the top of the lower steel shell, and a water-cooling jacket 10 is coaxially sleeved on the inner side of the bottom, and the water-cooling jacket 10 covers the entire inner bottom of the lower steel shell and the lower side thereof; the lower steel shell is screwed and fixed to the upper steel shell through the docking of the first large flange and the second large flange, and the two are connected by a labyrinth structure; the centering block 11 is of a conical structure, and is arranged at the center of the inner bottom of the lower steel shell, and wrapped around the bottom of the furnace bottom module Ⅰ12.

[0033] The furnace side module I3 and several furnace side modules II4 of the present invention are arranged in a circular array inside the lower furnace body 2, and water cooling columns 5 are respectively provided between the furnace side module I3 and the furnace side module II4, and between adjacent furnace side modules II4, and are respectively connected in an inlaid locking structure; wherein each water cooling column 5 includes a column 51, a high temperature resistant alloy cladding layer I52, a primary cooling water pipe 53, a secondary cooling water pipe 54 and a quick plug connector 55; Figure 1 , Figure 2As shown, each column 51 is made of copper-steel composite material, and its cross-section is rectangular; concave guiding and fixing grooves are symmetrically arranged on the long sides of the rectangle of each column 51, and form male-female cooperation with the corresponding furnace side module Ⅰ3 and the corresponding furnace side module Ⅱ4, respectively, to guide and support the rapid installation and positioning of the furnace side module Ⅰ3 and the furnace side module Ⅱ4; a high-temperature resistant alloy cladding layer Ⅰ52 is provided on the outer upper surface of each column 51, and a primary cooling water pipe 53 and a secondary cooling water pipe 54 are vertically arranged at intervals therein, and the upper and lower ends of each primary cooling water pipe 53 and the secondary cooling water pipe 54 extend vertically out of the corresponding column 51 toward the inner side of the corresponding column 51, and the lower side thereof is the water inlet end, and the upper side thereof is the water outlet end, and quick plug connectors 55 are respectively provided at the water inlet end and the water outlet end, and each quick plug connector 55 is provided with a male-female structure. The water-cooled column 5 of the present invention is provided with a concave guiding and fixing groove, which forms a male-female fit with the convex structure of the water-cooling part of the furnace side module, and can provide guidance and support for the rapid installation and positioning of the furnace side module; the high-temperature resistant alloy cladding layer Ⅰ52 arranged on the inner upper surface of the column 51 has strong high-temperature performance and can prevent the influence of high-temperature slag leakage; the primary cooling water pipe 53 and the secondary cooling water pipe 54 are arranged to fully guarantee the mechanical properties of the column 51, and have the function of sealing the slag leakage gap, effectively ensuring the stability of the structure.

[0034] The furnace side module I3 is arranged on the side opposite to the feed port 7, and includes a refractory structure I31, a water-cooled component I32, a high-temperature resistant alloy cladding layer II33, a refractory structure II34 and a water-cooled induction coil 36; Figures 1 to 5As shown, the refractory structure Ⅰ31 is arranged on the outside of the water-cooling component Ⅰ32, and its two sides are in a maze structure, one side is convex and the other side is concave; the water-cooling component Ⅰ32 is an arc-shaped structure, and convex structures are arranged on both sides, and it forms a male-female structure with the concave guide fixing groove of the corresponding water-cooling column 5; the water-cooling component Ⅰ32 adopts a copper steel load structure, and an S-shaped water-cooling pipeline Ⅰ is arranged therein, and the water inlet and outlet of the water-cooling pipeline Ⅰ extend vertically out of the water-cooling component Ⅰ32 respectively toward the outside of the water-cooling component Ⅰ32, and quick plugs are also provided at the water inlet and outlet of the water-cooling pipeline Ⅰ; a high-temperature resistant alloy cladding layer Ⅱ33 is provided on the inner side of the water-cooling component Ⅰ32, and the high-temperature resistant alloy The weld overlay layer II33 is arranged in multiple layers in an orderly manner; a refractory structure II34 is also provided on the inner side of the water-cooled part I32 and the high-temperature resistant alloy weld overlay layer II33, and the bottom of the refractory structure II34 is connected to the water-cooling jacket 10 and the furnace bottom module II13, and the interface between the refractory structure II34 and the furnace bottom module II13 is connected in a two-level stepped maze structure, and the joint between the two is filled with unbaked chromium-containing refractory mud for sealing; a high-temperature resistant alloy flow port 35 is opened in the middle of the furnace side module I3, and the high-temperature resistant alloy flow port 35 penetrates the furnace side module I3 at a certain angle, and is an expansion structure close to the inner side of the furnace, and a water-cooled induction coil 36 is wrapped around the high-temperature resistant alloy flow port 35. The high-temperature resistant alloy liquid flow port 35 and the water-cooled induction coil 36 provided in the present invention can effectively ensure the stable discharge of the molten slurry. The water-cooled induction coil 36 has cooling and induction heating functions. The cooling function causes slag to form in the liquid flow port, thereby ensuring the stability of the liquid flow port structure. The induction heating function can ensure that the discharge of the molten slurry will not be interrupted. During actual operation, the stable discharge of the molten slurry can be achieved by adjusting and matching the water flow rate and the induction heating.

[0035] Each furnace side module Ⅱ4 has the same type and size structure as the furnace side module Ⅰ3, and has strong interchangeability, and each of them includes a refractory structure Ⅲ41, a water cooling part Ⅱ42, a high temperature resistant alloy cladding layer Ⅲ43 and a refractory structure Ⅳ44; Figures 1 to 5As shown, each refractory structure III41 is arranged on the outside of the corresponding water-cooling component II42, and its two sides are in a maze structure, one side is convex and the other side is concave; each water-cooling component II42 is in an arc-shaped structure, and convex structures are arranged on both sides, and they are respectively in a male-female structure with the concave guide fixing grooves of the corresponding water-cooling column 5; each water-cooling component II42 adopts a copper steel load structure, and an S-shaped water-cooling pipeline II is arranged therein, and the water inlet and outlet of each water-cooling pipeline II respectively extend vertically out of the corresponding water-cooling component II42 toward the outside of the water-cooling component II42, and at the water inlet and outlet of each water-cooling pipeline II The water inlet is also provided with a quick plug; a high temperature resistant alloy cladding layer Ⅲ43 is provided on the inner side of each water-cooled component Ⅱ42, and each high temperature resistant alloy cladding layer Ⅲ43 is arranged in a multi-layer row; a refractory structure Ⅳ44 is also provided on the inner side of each water-cooled component Ⅱ42 and the corresponding high temperature resistant alloy cladding layer Ⅲ43, and the bottom of each refractory structure Ⅳ44 is respectively connected to the water cooling jacket 10 and the corresponding furnace bottom module Ⅲ14, and each refractory structure Ⅳ44 and the corresponding furnace bottom module Ⅲ14 The interface is connected in a two-level stepped maze structure, and the joint between the two is filled with chromium-free refractory mud for sealing. The water-cooled component Ⅱ42 of the present invention adopts a copper steel load structure, and has high thermal conductivity and stable mechanical properties. The high temperature resistant alloy cladding layer Ⅲ43 has strong high temperature performance, which can effectively support the inner refractory structure Ⅳ44. The water cooling pipeline Ⅱ can effectively protect the mechanical properties of the metal structure at high temperature, cool the refractory, and improve the life of the refractory.

[0036] The present invention is provided with a furnace bottom module I12 at the center of the inner bottom of the lower furnace body 2, and the furnace bottom module II13 and several furnace bottom modules III14 are arranged in a circular array around the inner bottom of the lower furnace body 2, and the furnace bottom module I12 is respectively connected with the corresponding furnace bottom module II13 and the furnace bottom module III14 at the interface in a two-level stepped maze structure, and the upper end of each furnace side module I3 and furnace side module II4 is respectively connected with the bottom of the upper furnace body 1 in a male-female structure, and the lower end thereof is respectively connected with the corresponding furnace bottom module II13 and the furnace bottom module III14 at the interface in a two-level stepped maze structure; Figures 1 to 8 As shown, the furnace bottom module Ⅰ12 is a circular stepped structure, and its stepped surface is a plurality of maze structures; a conical positioning hole is provided in the bottom center of the furnace bottom module Ⅰ12, and the furnace bottom module Ⅰ12 is connected to the centering block 11 in a male-female structure through the conical positioning hole, thereby effectively ensuring fast and accurate positioning during installation; the furnace bottom module Ⅱ13 is arranged on the side relative to the furnace side module Ⅰ3, and it is fan-shaped, with stepped structures on all four sides, and a plurality of maze structures are arranged on the stepped surface; each furnace bottom module Ⅲ14 adopts the same type and size structure as the furnace bottom module Ⅱ13, and has strong interchangeability. It is fan-shaped, with stepped structures on all four sides, and a plurality of maze structures are arranged on the stepped surface, and it is assembled into a circle with the furnace bottom module Ⅱ13.

[0037] The interfaces of the furnace bottom module and the furnace side module of the present invention both adopt a stepped maze structure. During construction, the joints are filled with unbaked chromium-containing refractory mud for sealing. When the furnace is running, the thermal expansion of the refractory material at high temperature will further tighten the joints, effectively preventing slag leakage.

[0038] Each water inlet and outlet pipeline 6 includes a water inlet main pipe 61, a water outlet main pipe 62 and a connecting hose 63; Figures 1 to 8 As shown, several water inlet main pipes 61 and water outlet main pipes 62 are arranged in a ring shape around the lower steel shell of the lower furnace body 2, and are respectively connected to the corresponding water-cooled columns 5, furnace side modules I3 and furnace side modules II4 through connecting hoses 63, thereby realizing rapid disassembly and assembly of each module.

[0039] The temperature sensing elements of the present invention are evenly arranged at the bottom joints of furnace bottom module I12, furnace bottom module II13, and furnace bottom module III14; wherein the temperature sensing elements include outer arc seam temperature sensing elements 15, inner arc seam temperature sensing elements 16, and straight seam temperature sensing elements 17; Figures 1 to 8 As shown, the outer arc seam temperature sensing elements 15 are arranged in a circular array at the bottom of the joints between the furnace side module Ⅰ3, furnace side module Ⅱ4 and furnace bottom module Ⅱ13, furnace bottom module Ⅲ14, and the inner arc seam temperature sensing elements 16 are arranged in a circular array at the bottom of the joints between the furnace bottom module Ⅰ12 and the furnace bottom module Ⅱ13, furnace bottom module Ⅲ14, and run through the entire joint; the straight seam temperature sensing elements 17 are arranged at the bottom of the joints between the furnace bottom module Ⅱ13 and the furnace bottom module Ⅲ14, and at the bottom of the joints of the adjacent furnace bottom modules Ⅲ14. The present invention can effectively give early warnings for slag channeling and refractory working conditions by setting temperature sensing elements, ensuring the safety of equipment operation, and the water cooling jacket 10 provided covers the joints of all modules, further improving the safety performance of the equipment.

[0040] The installation order of the modules of the present invention is: furnace bottom module I12 → furnace bottom module II13 → furnace bottom module III14 → furnace side module I3 → furnace side module II4. All modules have interlocking positioning structures and can be hoisted into place at one time, which is simple and efficient.

[0041] All modules of the present invention are prefabricated parts and have completed the baking process before leaving the factory, which fully guarantees the performance of the refractory structure. The furnace can be started after the installation is completed, which greatly saves the construction period of the refractory and improves the economy of the project.

[0042] like Figure 1 As shown, a furnace bottom support 18 is vertically provided at the bottom of the lower steel shell of the lower furnace body 2, and the entire melting furnace is supported by the furnace bottom support 18.

[0043] Beneficial effects of the present invention:

[0044] (1) The overhaul period of the melting furnace of the present invention can be controlled within 10 days, which has an order of magnitude improvement in the economic efficiency of the project;

[0045] (2) The melting furnace of the present invention can selectively replace and repair the refractory structure quickly, and there is no need to replace the refractory as a whole during overhaul;

[0046] (3) The refractory materials of the modular components of the present invention have been fully baked before leaving the factory, with a high performance achievement rate, avoiding the existence of weak points in the refractory materials, thereby effectively improving the service life.

[0047] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A split modular plasma hazardous waste melting furnace, characterized in that: It includes an upper furnace body, a lower furnace body, a water-cooling column, a furnace side module I, a furnace side module II, a furnace bottom module I, a furnace bottom module II, a furnace bottom module III and a temperature sensing element; the upper furnace body and the lower furnace body are connected by a labyrinth structure, and the joints between the two are filled with unbaked chromium-containing refractory mud for sealing; the furnace side module I and several furnace side modules II are arranged in a circular array inside the lower furnace body, and water-cooling columns are respectively provided between the furnace side module I and the furnace side module II, and between adjacent furnace side modules II, and are respectively connected in an inlaid locking structure; a A furnace bottom module I, and the furnace bottom module II and several furnace bottom modules III are arranged in a circular array around the inner bottom of the lower furnace body, the furnace bottom module I is respectively connected to the interface of the corresponding furnace bottom module II and the furnace bottom module III in a two-level stepped maze structure, and the upper ends of each of the furnace side modules I and the furnace side modules II are respectively connected to the bottom of the upper furnace body in a male-female structure, and the lower ends thereof are respectively connected to the interface of the corresponding furnace bottom module II and the furnace bottom module III in a two-level stepped maze structure; the temperature sensing elements are evenly arranged at the bottom joints of the furnace bottom module I, the furnace bottom module II, and the furnace bottom module III; The upper furnace body is of an integral type and can be hoisted and replaced as a whole, and includes an upper steel shell, a first large flange and refractory materials; a first large flange is coaxially sleeved on the outer side of the bottom of the upper steel shell, and refractory materials are arranged inside the flange, the bottom of the refractory materials is a male-female groove structure, and the upper ends of each of the furnace side modules I and the furnace side modules II are respectively connected to the bottom of the refractory materials of the upper furnace body in a male-female structure; a feed port, a generator interface and a flue gas outlet are sequentially spaced apart on the same vertical plane at the top of the upper steel shell; The lower furnace body comprises a lower steel shell, a second large flange, a water-cooling jacket and a centering block; a second large flange is coaxially sleeved on the outer side of the top of the lower steel shell, and a water-cooling jacket is coaxially sleeved on the inner side of the bottom, and the water-cooling jacket covers the entire inner bottom of the lower steel shell and the lower side thereof; the lower steel shell is screwed and fixed to the upper steel shell through the docking of the first large flange and the second large flange, and the two are connected by a labyrinth structure; the centering block is in a conical structure, and is arranged at the center of the inner bottom of the lower steel shell, and wrapped around the bottom of the furnace bottom module I; Each of the water-cooled columns comprises a column, a high-temperature resistant alloy cladding layer I, a primary cooling water pipe, a secondary cooling water pipe and a quick-connect connector; each of the columns is made of a copper-steel composite material, and its cross-section is a rectangular structure; concave guide fixing grooves are symmetrically arranged on the rectangular long sides of each of the columns, and form a male-female fit with the corresponding furnace side module I and the corresponding furnace side module II, respectively, to guide and support the rapid installation and positioning of the furnace side module I and the furnace side module II; a high-temperature resistant alloy cladding layer I is provided on the outer upper surface of each of the columns, and a primary cooling water pipe and a secondary cooling water pipe are vertically arranged therein at intervals, and the upper and lower ends of each of the primary cooling water pipe and the secondary cooling water pipe extend vertically out of the corresponding column toward the inner side of the corresponding column, and the lower side thereof is a water inlet end, and the upper side thereof is a water outlet end, and quick-connect connectors are provided at the water inlet end and the water outlet end, respectively, and each of the quick-connect connectors is provided with a male-female structure; The furnace side module I is arranged on the side opposite to the feed port, and includes a refractory structure I, a water-cooled component I, a high-temperature resistant alloy cladding layer II, a refractory structure II and a water-cooled induction coil; the refractory structure I is arranged on the outside of the water-cooled component I, and its two sides are in a maze structure, one side is convex and the other side is concave; the water-cooled component I is in an arc-shaped structure, and convex structures are arranged on both sides, and they are in a male-female structure with the concave guide fixing groove corresponding to the water-cooled column; the water-cooled component I adopts a copper-steel load structure, and an S-shaped water-cooling pipeline I is arranged therein, and the water inlet and water outlet of the water-cooling pipeline I respectively extend vertically out of the water-cooled component I toward the outside of the water-cooled component I, and the water inlet and water outlet of the water-cooled pipeline I are also divided into A quick plug is provided; a high-temperature resistant alloy cladding layer II is provided on the inner side of the water-cooled component I, and the high-temperature resistant alloy cladding layer II is arranged in multiple layers; a refractory structure II is also provided on the inner side of the water-cooled component I and the high-temperature resistant alloy cladding layer II, and the bottom of the refractory structure II is connected to the water-cooled jacket and the furnace bottom module II, and the interface between the refractory structure II and the furnace bottom module II is connected in a two-level stepped maze structure, and the joint between the two is filled with unbaked chromium-containing refractory mud for sealing; a high-temperature resistant alloy flow port is provided in the middle of the furnace side module I, and the high-temperature resistant alloy flow port penetrates the furnace side module I at a certain angle, and is an expansion structure close to the inner side of the furnace, and a water-cooled induction coil is wrapped around the high-temperature resistant alloy flow port; Each of the furnace side modules II adopts the same type and size structure as the furnace side module I, and they all include a refractory structure III, a water-cooled component II, a high-temperature resistant alloy cladding layer III and a refractory structure IV; each of the refractory structures III is arranged on the outside of the corresponding water-cooled component II, and its two sides are in a maze structure, one side is convex and the other side is concave; each of the water-cooled components II is in an arc-shaped structure, and convex structures are arranged on both sides, and they are in a male-female structure with the concave guide fixing groove of the corresponding water-cooled column; the water-cooled component II adopts a copper steel load structure, and an S-shaped water-cooling pipeline II is arranged therein, and the water inlet and outlet of each of the water-cooling pipeline II are respectively facing the outside of the water-cooled component II The corresponding water-cooled component II is extended vertically in the direction, and quick plugs are respectively provided at the water inlet and outlet of each water-cooling pipeline II; a high-temperature resistant alloy cladding layer III is provided on the inner side of each water-cooled component II, and each high-temperature resistant alloy cladding layer III is arranged in multiple layers; a refractory structure IV is also provided on the inner side of each water-cooled component II and the corresponding high-temperature resistant alloy cladding layer III, and the bottom of each refractory structure IV is respectively connected to a water cooling jacket and a corresponding furnace bottom module III, and the interface between each refractory structure IV and the corresponding furnace bottom module III is connected in a two-level stepped maze structure, and the joint between the two is filled with unbaked chromium-containing refractory mud for sealing.

2. The split modular plasma hazardous waste melting furnace according to claim 1, characterized in that: The furnace bottom module I is a circular stepped structure, and its stepped surface is a plurality of maze structures; a conical positioning hole is opened in the bottom center of the furnace bottom module I, and the furnace bottom module I is connected to the centering block in a male-female structure through the conical positioning hole; the furnace bottom module II is arranged on the side relative to the furnace side module I, and it is fan-shaped, with stepped structures on all four sides, and a plurality of maze structures are arranged on the stepped surface; each of the furnace bottom modules III adopts the same type and size structure as the furnace bottom module II, it is fan-shaped, with stepped structures on all four sides, and a plurality of maze structures are arranged on the stepped surface, and it is assembled into a circle with the furnace bottom module II.

3. The split modular plasma hazardous waste melting furnace according to claim 1, characterized in that: It also includes several water inlet and outlet pipes, and each of the water inlet and outlet pipes includes a water inlet main pipe, a water outlet main pipe and a connecting hose; the several water inlet main pipes and water outlet main pipes are arranged in a ring shape around the lower steel shell of the lower furnace body, and are respectively connected to the quick-connect plugs of the corresponding water-cooled columns, furnace side module I and furnace side module II through connecting hoses.

4. The split modular plasma hazardous waste melting furnace according to claim 1, characterized in that: The temperature sensing elements include outer arc seam temperature sensing elements, inner arc seam temperature sensing elements and straight seam temperature sensing elements; the outer arc seam temperature sensing elements are arranged in a circular array at the bottom of the seam between the furnace side module I, furnace side module II and the furnace bottom module II, furnace bottom module III; the inner arc seam temperature sensing elements are arranged in a circular array at the bottom of the seam between the furnace bottom module I and the furnace bottom module II, furnace bottom module III, and run through the entire seam; the straight seam temperature sensing elements are arranged at the bottom of the seam between the furnace bottom module II and the furnace bottom module III, and at the bottom of the seam between the adjacent furnace bottom modules III.

5. The split modular plasma hazardous waste melting furnace according to claim 1, characterized in that: A furnace bottom support is vertically arranged at the bottom of the lower steel shell of the lower furnace body, and the entire melting furnace is supported by the furnace bottom support.

Images