CN114593598A

CN114593598A - High-efficiency fluidized bed furnace capable of preventing materials from being accumulated

Info

Publication number: CN114593598A
Application number: CN202210258508.6A
Authority: CN
Inventors: 陈华勇; 周笛; 冯金娣
Original assignee: Anhui Huabo Renewable Resources Technology Co Ltd
Current assignee: Anhui Huabo Renewable Resources Technology Co Ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-06-07

Abstract

The invention relates to the technical field of fluidized bed furnaces, in particular to a high-efficiency fluidized bed furnace for preventing material accumulation, which comprises an oxidation chamber, a roasting chamber and a burner, wherein the bottom of the oxidation chamber is provided with the roasting chamber, a preheating chamber is arranged on one side of the roasting chamber, when a material is added into the fluidized bed furnace, the interior of the preheating chamber is heated by an electric heating plate, the material is added into the preheating chamber through a feed inlet to preheat the material, high-pressure oxygen is introduced into the preheating chamber through a first air inlet of a high-pressure oxygen pipe while the material is fed into the preheating chamber, the high-pressure oxygen is blown to one side of a turnover frame to drive the turnover frame to rotate rapidly, the material is crushed by the turnover frame rotating at a high speed when contacting the turnover frame, meanwhile, the high-pressure oxygen is used for scattering particle materials, and the scattered materials enter the roasting chamber from the feed inlet, the material is pulverized, and the oxidizing roasting efficiency is improved.

Description

High-efficiency fluidized bed furnace capable of preventing materials from being accumulated

Technical Field

The invention relates to the technical field of fluidized bed furnaces, in particular to a high-efficiency fluidized bed furnace capable of preventing materials from being accumulated.

Background

The fluidized bed roaster is also called fluidized bed roaster, and is one apparatus for roasting sulfide ore by solid fluidizing technology. The roasting process is exothermic, and produces gas containing sulfur dioxide mainly for producing sulfuric acid, and slag is used as metallurgical raw material. When roasting materials, the existing fluidized bed furnace is easy to attach to the furnace wall, so that the materials are accumulated in the furnace, the roasting of the materials is not thorough, and the roasting efficiency of the materials is low.

Based on this, in order to solve the technical defects, a high-efficiency fluidized bed furnace for preventing material accumulation is provided.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the high-efficiency fluidized bed furnace for preventing the material accumulation, and solves the problems that the material proposed in the background art is easy to adhere to the furnace wall when being roasted in the fluidized bed furnace, so that the material is accumulated in the furnace, the roasting of the material is not thorough, and the roasting efficiency is low.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a high-efficiency fluidized bed furnace capable of preventing materials from being accumulated comprises an oxidation chamber, a roasting chamber and burners, wherein the bottom of the oxidation chamber is provided with the roasting chamber, the circumferential surface of the roasting chamber is provided with a plurality of burners, one side of the circumferential surface of the roasting chamber is provided with a preheating chamber, the top and the bottom of the preheating chamber are respectively provided with a feed inlet and a flash port, the left side of the preheating chamber is provided with a high-pressure oxygen pipe, the inside of the high-pressure oxygen pipe is respectively provided with a first air inlet and a second air inlet, the front side and the rear side of the inner wall of the preheating chamber are respectively provided with an electric heating plate, the inside of the preheating chamber is rotatably provided with a first rotating rod, the surface of the first rotating rod is provided with a turnover frame, the turnover frame is positioned right below the feed inlet, one side of the inside of the preheating chamber, which is close to the roasting chamber, is provided with a material passing port, and the material passing port is communicated with the inside of the roasting chamber;

the roasting chamber is internally and rotatably provided with a rotating frame, a rotating groove matched with the rotating frame is formed in the roasting chamber, the circumferential surface of the rotating frame is provided with a material scraping frame, and one side of the material scraping frame is in sliding contact with the inner wall of the roasting chamber.

Preferably, the first air inlet adopts the shape design of horn mouth, and the outer port of first air inlet is greater than the interior port, the bilateral symmetry that the second air inlet is located first air inlet is provided with two.

Preferably, the circumferential surface of the rotating frame is provided with an outer gear ring, the inside of the preheating chamber is provided with a mounting frame, the inside of the mounting frame is rotatably provided with a second rotating rod, the surface of the second rotating rod is provided with a gear, and the surface of the gear is in meshing transmission with the surface of the outer gear ring.

Preferably, the movable grooves are formed in the upper portion and the lower portion of the inner portion of the mounting frame, the two ends of the second rotating rod extend into the two movable grooves respectively, the two ends of the surface of the second rotating rod are provided with fan blades, the air blowing openings are formed in one sides of the movable grooves, air outlets are formed between the other sides of the two movable grooves and the inner portion of the roasting chamber, and the inner portions of the air blowing openings and the inner portion of the second air inlet are communicated through air guide pipes.

Preferably, a discharge hole is formed in the top of the oxidation chamber, a cyclone dust collector is arranged at the top of the discharge hole to collect materials, and a slag discharge hole is formed in the bottom of the roasting chamber.

Preferably, the left side of the preheating chamber is provided with an observation port, the observation port is used for observing the materials in the preheating chamber, and when the material quantity is accumulated excessively, the material is collected by the overflow port.

Preferably, the working principle of the high-efficiency boiling furnace is as follows:

when materials are treated by a fluidized bed furnace, firstly, the inside of a preheating chamber is heated by an electric heating plate, the materials are put into the preheating chamber through a feeding hole, the materials are preheated, high-pressure oxygen is introduced into the preheating chamber through a first air inlet of a high-pressure oxygen pipe while being sent into the preheating chamber, the high-pressure oxygen is blown to one side of a turnover frame to drive the turnover frame to rotate rapidly, the materials are crushed by the turnover frame rotating at a high speed when contacting the turnover frame, meanwhile, the high-pressure oxygen is used for scattering particle materials, and the scattered materials enter a roasting chamber from a material passing hole;

after the materials are scattered through the first air inlet and then are sent into the roasting chamber from the material passing port, the scattered materials are roasted at high temperature through the burner, high-pressure oxygen is blown into the air blowing port through the second air inlet and the air guide pipe, the high-pressure oxygen blows the fan blades to rotate, the fan blades drive the second rotating rod to rotate, the second rotating rod drives the gear to rotate, the gear drives the meshed outer gear ring to rotate, so that the rotating frame rotates inside the rotating groove, the rotating frame drives the scraping frames arranged on the peripheral surface to rotate inside the roasting chamber in the rotating process, the materials adhered to the inner wall of the roasting chamber are scraped through the scraping frames, the high-pressure oxygen entering the movable groove from the air blowing port enters the roasting chamber from the air outlet, the materials are further blown away, and the roasting efficiency of the materials is improved;

the cyclone dust collector arranged at the top of the discharge port is used for collecting materials, no materials are accumulated in the fluidized bed furnace, and the slag discharge port is used for collecting the material roasting waste slag.

(III) advantageous effects

The invention provides a high-efficiency fluidized bed furnace capable of preventing materials from being accumulated. Compared with the prior art, the method has the following beneficial effects:

(1) the preheating chamber is arranged on one side of the roasting chamber, when materials are added into the fluidized bed furnace, the interior of the preheating chamber is heated by the electric heating plate, the materials are put into the preheating chamber through the feeding hole, the materials are preheated, high-pressure oxygen is introduced into the preheating chamber through the first air inlet of the high-pressure oxygen pipe while the materials are sent into the preheating chamber, the high-pressure oxygen is blown to one side of the turnover frame to drive the turnover frame to rotate rapidly, the materials are crushed by the turnover frame rotating at a high speed when contacting the turnover frame, meanwhile, the high-pressure oxygen is used for scattering particle materials, the scattered materials enter the roasting chamber through the material passing hole, the materials are pulverized, and the oxidizing roasting efficiency is improved;

(2) through arranging the rotating frame in the roasting chamber, when materials are roasted in the roasting chamber, the materials are scattered through the first air inlet and then are sent into the roasting chamber from the material passing port, the scattered materials are roasted at high temperature by using the burner, meanwhile, high-pressure oxygen is blown into the air blowing port through the second air inlet and the air guide pipe, the high-pressure oxygen blows the fan blades to rotate, the fan blades drive the second rotating rod to rotate, the second rotating rod drives the gear to rotate, the gear drives the meshed outer gear ring to rotate, so that the rotating frame rotates in the rotating groove, the rotating frame drives the scraping frame which is arranged on the peripheral surface to rotate in the roasting chamber in the rotating process, the materials adhered to the inner wall of the roasting chamber are scraped by using the scraping frame, and the high-pressure oxygen entering the movable groove from the air blowing port enters the roasting chamber from the air outlet, and further blows the scattered materials, improve the roasting efficiency of the material and effectively avoid the accumulation of the material in the roasting chamber.

Drawings

FIG. 1 is a schematic view of a high efficiency fluidized bed furnace of the present invention to prevent material accumulation;

FIG. 2 is a side view of the preheating chamber structure of the present invention;

FIG. 3 is a cross-sectional view of a preheat chamber configuration of the present invention;

FIG. 4 is a plan view of the internal structure of the roasting chamber according to the present invention;

FIG. 5 is an enlarged view of the structure of FIG. 4 at A in accordance with the present invention;

FIG. 6 is a partial cross-sectional view of the mounting frame and firing chamber structure of the present invention.

In the figure, 10, an oxidation chamber; 20. a roasting chamber; 30. a burner; 40. a preheating chamber; 50. a feed inlet; 60. an overflow port; 70. a discharge port; 80. a slag discharge port; 90. a viewing port; 101. a first air inlet; 102. a second air inlet; 103. an electric hot plate; 104. a first rotating lever; 105. a roll-over stand; 106. a material passing port; 107. a high pressure oxygen pipe; 201. a rotating frame; 202. a rotating groove; 203. an outer ring gear; 204. a mounting frame; 205. a second rotating lever; 206. a gear; 207. a movable groove; 208. a fan blade; 209. an air blowing port; 210. an air outlet; 211. a scraping frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a high-efficiency fluidized bed furnace for preventing material accumulation comprises an oxidation chamber 10, a roasting chamber 20, and burners 30, wherein the bottom of the oxidation chamber 10 is provided with the roasting chamber 20, the periphery of the roasting chamber 20 is provided with a plurality of burners 30, one side of the periphery of the roasting chamber 20 is provided with a preheating chamber 40, the top and the bottom of the preheating chamber 40 are respectively provided with a feed inlet 50 and a flash 60, the left side of the preheating chamber 40 is provided with a high-pressure oxygen pipe 107, the inside of the high-pressure oxygen pipe 107 is respectively provided with a first air inlet 101 and a second air inlet 102, the front and rear sides of the inner wall of the preheating chamber 40 are respectively provided with an electric heating plate 103, the inside of the preheating chamber 40 is rotatably provided with a first rotating rod 104, the surface of the first rotating rod 104 is provided with a roll-over stand 105, the roll-over stand 105 is positioned under the feed inlet 50, one side of the inside of the preheating chamber 40, which is close to the roasting chamber 20, is provided with a through 106, and the material passing port 106 is communicated with the inside of the roasting chamber 20, wherein the first air inlet 101 is designed in a bell mouth shape, the outer port of the first air inlet 101 is larger than the inner port, when feeding the material into the roasting chamber 20, the inside of the preheating chamber 40 is heated by the electric heating plate 103, the material is fed into the preheating chamber 40 through the feed port 50 to be preheated, the material is fed into the preheating chamber 40, meanwhile, high-pressure oxygen is introduced into the preheating chamber 40 through the first air inlet 101 of the high-pressure oxygen pipe 107, the high-pressure oxygen is blown to one side of the turning frame 105 to drive the turning frame 105 to rotate rapidly, and when contacting the turning frame 105, the material is crushed by the turning frame 105 rotating at a high speed, and meanwhile, the high-pressure oxygen is used for scattering particle materials to force the material to be pulverized, so that the oxidizing and roasting efficiency is improved.

The top of oxidation chamber 10 is provided with discharge gate 70, and wherein the top of discharge gate 70 is provided with cyclone and collects the material, lets no material in the fluidized bed furnace pile up, and the bottom of roasting chamber 20 is provided with row cinder notch 80, utilizes row cinder notch 80 to collect material calcination waste residue, and the left side of preheating chamber 40 is provided with viewing aperture 90, utilizes viewing aperture 90 to observe the material in preheating chamber 40, when the material volume piles up too much, utilizes drain 60 to collect the material.

In order to solve the problem that the material is easy to adhere to the inner wall of the roasting chamber 20 in the combustion process, a rotating frame 201 is rotatably arranged inside the roasting chamber 20, a rotating groove 202 matched with the rotating frame 201 is formed inside the roasting chamber 20, an outer gear ring 203 is arranged on the peripheral surface of the rotating frame 201, a mounting frame 204 is arranged inside the preheating chamber 40, a second rotating rod 205 is rotatably arranged inside the mounting frame 204, a gear 206 is arranged on the surface of the second rotating rod 205, the surface of the gear 206 is in meshing transmission with the surface of the outer gear ring 203, movable grooves 207 are formed in the upper and lower parts inside the mounting frame 204, two ends of the second rotating rod 205 respectively extend into the two movable grooves 207, fan blades 208 are arranged at two ends of the surface of the second rotating rod 205, one side of each movable groove 207 is provided with a gas blowing port 209, and a gas outlet 210 is formed between the other side of each movable groove 207 and the inside the roasting chamber 20, wherein the inside of the blowing port 209 is communicated with the inside of the second air inlet 102 through an air duct, the periphery of the rotating frame 201 is provided with a material scraping frame 211, one side of the material scraping frame 211 is in sliding contact with the inner wall of the roasting chamber 20, when materials are roasted in the roasting chamber 20, the materials are scattered through the first air inlet 101 and then are sent into the roasting chamber 20 through the material passing port 106, the scattered materials are roasted at high temperature by using the burner 30, high-pressure oxygen is blown into the blowing port 209 through the second air inlet 102 and the air duct, the high-pressure oxygen blows the fan blades 208 to rotate, the fan blades 208 drive the second rotating rod 205 to rotate, the second rotating rod 205 drives the gear 206 to rotate, the gear 206 drives the meshed outer gear ring 203 to rotate, so that the rotating frame 201 rotates in the rotating groove 202, the rotating frame 201 drives the material scraping frame 211 arranged on the periphery to rotate in the roasting chamber 20 in the rotating process, utilize scraping the work or material rest 211 to scrape off the material of adhesion on the roasting chamber 20 inner wall to the high pressure oxygen who gets into in the activity groove 207 from the gas outlet 210 gets into roasting chamber 20 from the mouth of blowing 209, further blows off the material, improves the calcination efficiency to the material, effectively avoids the material to appear piling up in roasting chamber 20.

The working principle is as follows:

when materials are treated by using a fluidized bed furnace, firstly, the interior of a preheating chamber 40 is heated by an electric heating plate 103, the materials are put into the preheating chamber 40 through a feeding hole 50 and preheated, the materials are fed into the preheating chamber 40, and simultaneously, high-pressure oxygen is introduced into the preheating chamber 40 through a first air inlet 101 of a high-pressure oxygen pipe 107 and blown to one side of a turning frame 105 to drive the turning frame 105 to rotate rapidly, the materials are crushed by the turning frame 105 rotating at a high speed when contacting the turning frame 105, meanwhile, the granular materials are scattered by the high-pressure oxygen, and the scattered materials enter a roasting chamber 20 from a material passing hole 106;

after the material is scattered through the first air inlet 101 and then sent into the roasting chamber 20 through the material passing port 106, the scattered material is roasted at a high temperature by the burner 30, simultaneously, high-pressure oxygen is blown into the air blowing port 209 through the second air inlet 102 and the air duct, the high-pressure oxygen blows the fan blade 208 to rotate, the fan blade 208 drives the second rotating rod 205 to rotate, the second rotating rod 205 drives the gear 206 to rotate, the gear 206 drives the meshed outer gear ring 203 to rotate, thereby the rotating frame 201 rotates in the rotating groove 202, the rotating frame 201 drives the scraping frame 211 arranged on the peripheral surface to rotate in the roasting chamber 20 in the rotating process, the scraping frame 211 is used for scraping the materials adhered on the inner wall of the roasting chamber 20, high-pressure oxygen entering the movable groove 207 from the air blowing port 209 enters the roasting chamber 20 from the air outlet 210, so that the materials are further blown away, and the roasting efficiency of the materials is improved;

the materials are collected by the cyclone dust collector arranged at the top of the discharge port 70, no materials are accumulated in the fluidized bed furnace, and the material roasting waste residues are collected by the slag discharge port 80.

And those not described in detail in this specification are well within the skill of those in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent piled up high-efficient fluidized bed furnace of material, includes oxidizing chamber (10), roasting chamber (20), combustor (30), the bottom of oxidizing chamber (10) is provided with roasting chamber (20), and the global of roasting chamber (20) is provided with a plurality of combustor (30), its characterized in that: a preheating chamber (40) is arranged on one side of the circumferential surface of the roasting chamber (20), a feed inlet (50) and a flash port (60) are respectively formed in the top and the bottom of the preheating chamber (40), a high-pressure oxygen pipe (107) is arranged on the left side of the preheating chamber (40), a first air inlet (101) and a second air inlet (102) are respectively formed in the high-pressure oxygen pipe (107), electric heating plates (103) are respectively arranged on the front side and the rear side of the inner wall of the preheating chamber (40), a first rotating rod (104) is rotatably arranged in the preheating chamber (40), a turning frame (105) is arranged on the surface of the first rotating rod (104), the turning frame (105) is located under the feed inlet (50), a material passing port (106) is formed in one side, close to the roasting chamber (20), of the interior of the preheating chamber (40), and the material passing port (106) is communicated with the interior of the roasting chamber (20);

the roasting chamber is characterized in that a rotating frame (201) is rotatably arranged inside the roasting chamber (20), a rotating groove (202) matched with the rotating frame (201) is formed in the roasting chamber (20), a material scraping frame (211) is arranged on the peripheral surface of the rotating frame (201), and one side of the material scraping frame (211) is in sliding contact with the inner wall of the roasting chamber (20).

2. The high-efficiency boiling furnace for preventing the material from being accumulated in the claim 1, is characterized in that: the first air inlet (101) adopts the shape design of a horn mouth, the outer port of the first air inlet (101) is larger than the inner port, and two second air inlets (102) are symmetrically arranged on two sides of the first air inlet (101).

3. A high efficiency boiling furnace for preventing material accumulation as claimed in claim 1, wherein: the global of rotating turret (201) is provided with outer ring gear (203), the inside of preheating chamber (40) is provided with mounting bracket (204), and the inside rotation of mounting bracket (204) is provided with second dwang (205), the surface of second dwang (205) is provided with gear (206), and the surface of gear (206) and the surface meshing transmission of outer ring gear (203).

4. A high efficiency boiler for preventing material accumulation as claimed in claim 3, wherein: activity groove (207) have all been seted up to the inside upper and lower side of mounting bracket (204), and the both ends of second dwang (205) extend to the inside in two activity grooves (207) respectively, the both ends on second dwang (205) surface all are provided with flabellum (208), two the mouth (209) of blowing has all been seted up to one side in activity groove (207), and has seted up gas outlet (210) between the opposite side in two activity grooves (207) and roasting chamber (20) inside, wherein through the air duct intercommunication between the inside of the mouth (209) of blowing and the inside of second air inlet (102).

5. The high-efficiency boiling furnace for preventing the material from being accumulated in the claim 1, is characterized in that: the top of the oxidation chamber (10) is provided with a discharge hole (70), wherein the top of the discharge hole (70) is provided with a cyclone dust collector for collecting materials, and the bottom of the roasting chamber (20) is provided with a slag discharge hole (80).

6. The high-efficiency boiling furnace for preventing the material from being accumulated in the claim 1, is characterized in that: an observation port (90) is arranged on the left side of the preheating chamber (40), materials in the preheating chamber (40) are observed through the observation port (90), and when the amount of the materials is excessively accumulated, the materials are collected through the overflow port (60).

7. A high efficiency boiling furnace for preventing material accumulation as claimed in claim 1, wherein: the working principle of the high-efficiency fluidized bed furnace is as follows:

when materials are treated by using a fluidized bed roaster, firstly, the interior of a preheating chamber (40) is heated by an electric heating plate (103), the materials are put into the preheating chamber (40) through a feed inlet (50) and are preheated, when the materials are sent into the preheating chamber (40), high-pressure oxygen is introduced into the preheating chamber (40) through a first air inlet (101) of a high-pressure oxygen pipe (107), the high-pressure oxygen is blown to one side of a turning frame (105) to drive the turning frame (105) to rotate rapidly, the materials are crushed by the turning frame (105) rotating at a high speed when contacting the turning frame (105), meanwhile, the high-pressure oxygen is used for scattering particle materials, and the scattered materials enter a roasting chamber (20) from a material passing port (106);

after the materials are scattered through a first air inlet (101) and then are sent into a roasting chamber (20) from a material passing port (106), the scattered materials are roasted at high temperature through a burner (30), meanwhile, high-pressure oxygen is blown into an air blowing port (209) through a second air inlet (102) and an air guide pipe, the high-pressure oxygen blows a fan blade (208) to rotate, the fan blade (208) drives a second rotating rod (205) to rotate, the second rotating rod (205) drives a gear (206) to rotate, the gear (206) drives an outer gear ring (203) which is meshed with the gear to rotate, so that a rotating frame (201) rotates inside a rotating groove (202), the rotating frame (201) drives a material scraping frame (211) which is arranged on the peripheral surface to rotate inside the roasting chamber (20) in the rotating process, the materials adhered to the inner wall of the roasting chamber (20) are scraped through the material scraping frame (211), and the high-pressure oxygen which enters a movable groove (207) from the air blowing port (209) enters a gas outlet (210) and then enters the roasting chamber (20) In the burning chamber (20), the materials are further blown away, and the roasting efficiency of the materials is improved;

the cyclone dust collector arranged at the top of the discharge hole (70) is used for collecting materials, no materials are accumulated in the fluidized bed furnace, and the slag discharge hole (80) is used for collecting the material roasting waste slag.