Cement clinker production decomposing furnace capable of utilizing smelting tail gas

Abstract

The utility model discloses a cement clinker production decomposing furnace capable of utilizing smelting tail gas, and relates to the technical field of cement clinker production equipment. The device comprises a furnace body and a material storage box arranged above the outer sides of the outer walls of the two sides of the furnace body, a discharging pipe is arranged in the center of the bottom of the material storage box, the other end of the discharging pipe is installed in the center of the top of a crushing box, a drying assembly is arranged on the end face of the rear end of the material storage box, and a shifting plate is fixedly connected to the center of the interior of the crushing box. A filtering assembly is arranged on the lower portion in the crushing box. Raw material gaps in the material storage box can be filled with hot air through the drying assembly, meanwhile, the hot air can be filtered and recycled, the raw material drying efficiency and effect are improved, heat resource waste is reduced, the raw materials on the surface of the screen can be controlled to be at a certain height through the stirring plate and the filtering assembly, and the raw material drying effect is improved. Screen mesh blockage caused by raw material accumulation is avoided, and the filtering efficiency and effect of the crushed raw materials are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cement clinker production equipment, in particular to a cement clinker production decomposition furnace which can utilize smelting tail gas. Background Art

[0002] With the rapid growth of the industrial economy, the amount of hazardous waste generated in industrial production processes is increasing. It is estimated that 330 million tons of hazardous waste are generated worldwide each year. Due to the serious pollution and potential serious impacts caused by hazardous waste, hazardous waste has been called "political waste" in industrially developed countries.

[0003] The sources of hazardous wastes currently mainly include hazardous wastes in industrial wastes, medical hazardous wastes in urban wastes, and other hazardous wastes in domestic wastes. In industrial production, hazardous wastes generated by the four industries of chemical raw materials and chemical products manufacturing, non-ferrous metal smelting and rolling processing, non-metallic mineral mining and selection, and papermaking and paper products account for more than 60% of the total hazardous waste generation. Toxic and harmful substances in hazardous wastes will not only cause direct harm to human health, but will also migrate and transform in the natural environment, thereby polluting the ecological environment such as soil, water and atmosphere.

[0004] These hazardous wastes, such as smelting tail gas, can be used instead of fuel in the cement clinker production process, which has the functions of energy saving, environmental protection benefits, waste utilization, economic benefits, and social benefits. Among them, when using tail gas as fuel to produce cement clinker, a decomposition furnace is required, which can reduce the use of tail coal and further achieve CO2 and NOX emission reduction.

[0005] After retrieval, the publication number CN216073595U, application date 2021.10.08 discloses an energy-saving decomposition furnace for cement clinker production, which belongs to the technical field of cement clinker production, and comprises an energy-saving decomposition furnace main body, and feeding components are installed on both sides of the energy-saving decomposition furnace main body, and a storage device is arranged above the feeding component; the storage device comprises a fixed frame, a first motor, a silica gel desiccant, a mesh cylinder, a rotating plate, a storage box, a feed pipe and a closing cover, and a storage box is arranged above the feeding component, and a feed pipe is installed on the side of the storage box away from the energy-saving decomposition furnace main body, and a closing cover is installed on the outer side of the top end of the feed pipe through a thread, and a fixed frame is installed on the outer side of the storage box; by arranging the storage device, the utility model enables the decomposition furnace to keep the raw material dry through the silica gel desiccant when needed, thereby reducing the possibility of the raw material being damp, ensuring the normal operation, and thus improving the practicality of the decomposition furnace.

[0006] However, it still has the following disadvantages in actual use:

[0007] The energy-saving decomposition furnace for cement clinker production described above drives the silica gel desiccant in the mesh drum to rotate and dry the raw material when in use. However, in this way, a large amount of raw material is accumulated inside the storage box, which affects the normal rotation of the silica gel desiccant in the mesh drum. Therefore, it is difficult to dry the raw material at various places inside the storage box, affecting the drying efficiency and effect of the raw material.

[0008] 2. The energy-saving decomposition furnace for cement clinker production mentioned above filters the raw material through a filtering device when in use, but this method easily causes the raw material to accumulate on the surface of the filter screen, causing the filter screen to be blocked, affecting the filtering efficiency and effect. To this end, we provide a cement clinker production decomposition furnace that can utilize smelting tail gas to solve the above problems. Utility Model Content

[0009] The utility model aims to provide a cement clinker production decomposition furnace which can utilize smelting tail gas. By arranging a drying component, hot air can be filled in the raw material gap inside the storage box, thereby drying the raw material. At the same time, the hot air can be filtered and recycled, thereby improving the drying efficiency and effect of the raw material and reducing the waste of heat resources. In addition, the raw material on the surface of the screen can be controlled at a certain height by using a paddle and a filter component, thereby avoiding the clogging of the screen caused by the accumulation of raw material, resulting in low filtration efficiency, thereby improving the filtration efficiency and effect of the raw material after crushing.

[0010] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0011] The utility model is a cement clinker production decomposition furnace that can utilize smelting tail gas, comprising a furnace body and a storage box arranged above the outer sides of the outer walls on both sides thereof, a discharge pipe is arranged at the bottom center of the storage box, the other end of the discharge pipe is installed at the top center of a crushing box, a drying component is arranged at the rear end surface of the storage box, a paddle is fixedly connected to the inner center of the crushing box, and a filter component is arranged at the lower part of the crushing box;

[0012] The drying assembly includes a heating box and an air outlet pipe arranged on one side above the heating box, and the other end of the air outlet pipe is connected to the air inlet end of the fan through a pipe joint;

[0013] The filter assembly comprises a left-rotating motor and a right-rotating motor symmetrically arranged on one side of the crushing box center plane. The output shaft of the left-rotating motor is connected to the left driving shaft through a coupling.

[0014] The utility model is further configured that a feeding pipe is arranged at the top center position of the storage box, a valve is arranged on the outer wall of the discharge pipe, and a discharge pipe is arranged at the bottom center position of the crushing box.

[0015] The utility model is further configured that a feeding mechanism is arranged at the bottom end of the feeding pipe, and crushing mechanisms are arranged at the front and rear sides of the top end of the crushing box.

[0016] The utility model is further configured that an air inlet pipe is arranged at a central position of an outer wall of one side of the heating box, and the other end of the air inlet pipe is connected to an external pipe and an air return pipe through a three-way joint.

[0017] The utility model is further configured such that the other end of the air return pipe is arranged below the outer wall of one side of the storage box, filters are installed at uniform intervals along the horizontal direction on one side of the interior of the heating box, and a heating wire is suspended at the center of the heating box.

[0018] The utility model is further configured such that the air outlet end of the fan is connected to the annular tube through a pipe joint, the annular tube is located at the inner top of the storage box, and nozzles are evenly spaced at the bottom of the annular tube along the circumferential direction.

[0019] The utility model is further configured such that the other end of the left drive shaft passes through a bearing on one side of the front end face of the crushing box and is connected to a bearing on one side of the rear end face inside the crushing box; a left winding roller is sleeved on the outer side of the outer wall of the left drive shaft; and the output shaft of the right rotating motor is connected to the right drive shaft through a coupling.

[0020] The utility model is further configured such that the other end of the right driving shaft passes through the bearing on the other side of the front end face of the crushing box and is connected to the bearing on the other side of the rear end face inside the crushing box; a right winding roller is sleeved on the outer side of the outer wall of the right driving shaft; and screens are wound on the outer sides of the outer walls of the left winding roller and the right winding roller.

[0021] The utility model has the following beneficial effects:

[0022] The utility model provides a drying component, and the operation of the fan can pass the air heated by the heating wire into the annular tube and multiple nozzles, and the hot air is sprayed out by the nozzles to fill the raw material gaps inside the storage box, thereby drying the raw material. At the same time, the hot air can be filtered and recycled, thereby improving the drying efficiency and effect of the raw material and reducing the waste of heat resources. The utility model solves the problem that the above-mentioned energy-saving decomposition furnace for cement clinker production drives the silica gel desiccant in the mesh cylinder to rotate to dry the raw material when in use, while in this way a large amount of raw material is accumulated inside the storage box, which affects the normal rotation of the silica gel desiccant in the mesh cylinder, so it is difficult to dry the raw material in various places inside the storage box, affecting the drying efficiency and effect of the raw material.

[0023] The utility model provides a paddle plate and a filter assembly, and under the action of a left-rotating motor and a right-rotating motor, the screen is driven to move leftward or rightward, which drives the raw material on its surface to move, and the raw material on the screen surface can be moved under the cooperation of the paddle plate, so that the raw material on the screen surface can be controlled at a certain height, avoiding the clogging of the screen caused by the accumulation of raw material, resulting in low filtering efficiency, thereby improving the filtering efficiency and effect of the crushed raw material, and solving the problem that the above-mentioned energy-saving decomposition furnace for cement clinker production filters the raw material through the filtering device when in use, and this method is prone to the situation that the raw material accumulates on the surface of the filter, causing the filter to be blocked, affecting the filtering efficiency and effect.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The present invention is a structural schematic diagram of a cement clinker production decomposition furnace that can utilize smelting tail gas.

[0027] Figure 2 A cross-sectional view of a storage box.

[0028] Figure 3 This is a disassembled diagram of the drying component.

[0029] Figure 4 This is a cross-sectional view of the crushing box.

[0030] Figure 5 This is a structural diagram of the filtering component.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1-furnace body, 101-storage box, 1011-feeding pipe, 1012-discharging pipe, 1013-valve, 102-crushing box, 1021-discharging pipe, 103-feeding mechanism, 104-crushing mechanism, 105-paddle, 2-drying component, 201-heating box, 2011-air outlet pipe, 2012-air inlet pipe, 2013-external pipe, 2014-return air pipe, 202-fan, 2021-annular pipe, 203-filter, 204-heating wire, 205-nozzle, 3-filter component, 301-left rotating motor, 3011-left driving shaft, 3012-left winding roller, 302-right rotating motor, 3021-right driving shaft, 3022-right winding roller, 303-screen. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0035] See also Figures 1 to 4 The utility model is a cement clinker production decomposition furnace that can utilize smelting tail gas, including a furnace body 1 and a storage box 101 arranged above the outer side of the outer wall on both sides thereof, a discharge pipe 1012 is arranged at the bottom center of the storage box 101, and the other end of the discharge pipe 1012 is installed at the top center of the crushing box 102, and a drying component 2 is arranged on the rear end face of the storage box 101; the drying component 2 includes a heating box 201 and an outlet pipe 2011 arranged on one side above it, and the other end of the outlet pipe 2011 is connected to the air inlet end of the fan 202 through a pipe joint.

[0036] Specifically, a feeding pipe 1011 is provided at the center of the top of the storage box 101, a valve 1013 is provided on the outer wall of the discharge pipe 1012, a discharge pipe 1021 is provided at the center of the bottom of the crushing box 102, a feeding mechanism 103 is provided at the bottom end of the discharge pipe 1021, crushing mechanisms 104 are provided at the front and rear of the top of the crushing box 102, an air inlet pipe 2012 is provided at the center of the outer wall of one side of the heating box 201, and the other end of the air inlet pipe 2012 is connected to the outer wall through a three-way joint. Connecting pipe 2013 and return air pipe 2014, the other end of return air pipe 2014 is arranged under the outer wall of one side of storage box 101, filter screen 203 is installed evenly spaced in horizontal direction on one side of the inner part of heating box 201, heating wire 204 is suspended at the center of heating box 201, the air outlet end of fan 202 is connected with annular pipe 2021 through pipe joint, annular pipe 2021 is located at the inner top of storage box 101, and nozzles 205 are evenly spaced in circumferential direction on the bottom of annular pipe 2021.

[0037] Furthermore, the furnace body 1, the feeding mechanism 103 and the crushing mechanism 104 are all prior arts, so they will not be elaborated here. The valve 1013 can control the switch of the discharge pipe 1012. The pipe joint and the three-way joint both play the role of pipeline connection. The air inside the heating box 201 can be heated by the heating wire 204. The filter 203 can filter the circulating hot air and the external air to filter out dust and avoid affecting the use of subsequent pipelines. The operation of the fan 202 can extract the hot air inside the heating box 201. A plurality of nozzles 205 are arranged at the bottom of the annular tube 2021, and the hot air can be used to fill the gaps in the raw material to dry it.

[0038] The operation process of this embodiment is: start the heating wire 204, through which the air inside the heating box 201 can be heated, and then start the fan 202, the fan 202 runs to extract the hot air in the heating box 201 through the outlet pipe 2011, and then enters the inside of the annular pipe 2021, and after diversion, enters multiple nozzles 205, and is sprayed into the storage box 101 by the nozzle 205, and the hot air will fill the raw material gap inside the storage box 101, so as to play a role in drying the raw material, and then the dried air will be discharged through the return pipe 2014, and re-enter the heating box 201 through the inlet pipe 2012, and at the same time, it will play a filtering role under the action of the filter screen 203, so as to avoid the inhalation of too much dust and affect the subsequent normal use, thereby improving the drying efficiency and effect of the raw material and reducing the waste of heat resources. Specific embodiment 2

[0040] See also Figure 1 , 45. On the basis of the specific embodiment 1, what is different from the first embodiment is that: a paddle 105 is fixedly connected to the inner center position of the crushing box 102, a filter assembly 3 is arranged at the lower part of the crushing box 102, the filter assembly 3 includes a left-rotating motor 301 and a right-rotating motor 302 symmetrically arranged on one side of the crushing box 102 with respect to the central plane thereof, the output shaft of the left-rotating motor 301 is connected to the left driving shaft 3011 through a coupling, so as to solve the problem that the existing energy-saving decomposition furnace for cement clinker production filters the raw material through the filtering device when in use, and this method easily causes the raw material to accumulate on the surface of the filter screen, causing the filter screen to be blocked, and affecting the filtering efficiency and effect.

[0041] Specifically, the other end of the left driving shaft 3011 passes through the bearing on one side of the front end face of the crushing box 102 and is connected to the bearing on one side of the rear end face inside the crushing box 102, a left winding roller 3012 is sleeved on the outer side of the outer wall of the left driving shaft 3011, the output shaft of the right rotating motor 302 is connected to the right driving shaft 3021 through a coupling, the other end of the right driving shaft 3021 passes through the bearing on the other side of the front end face of the crushing box 102 and is connected to the bearing on the other side of the rear end face inside the crushing box 102, a right winding roller 3022 is sleeved on the outer side of the outer wall of the right driving shaft 3021, and the outer sides of the outer walls of the left winding roller 3012 and the right winding roller 3022 are both wrapped with a screen 303.

[0042] Furthermore, the left rotating motor 301 and the right rotating motor 302 and their related structures are the same, and when the left rotating motor 301 and the right rotating motor 302 are in operation, the left winding roller 3012 and the right winding roller 3022 rotate, and drive the screen 303 to move, thereby achieving the effect of moving the raw material on its surface.

[0043] The operation process of this embodiment is as follows: open the valve 1013, and the dried raw material is put into the crushing box 102 through the discharge pipe 1012. Then, the raw material can be crushed under the action of the crushing mechanism 104, and the crushed raw material will fall on the surface of the screen 303. At this time, the left rotating motor 301 and the right rotating motor 302 are started, and the output shafts of the two are rotated in the same direction. Under the action of the coupling, the corresponding left driving shaft 3011 and the right driving shaft 3021 are rotated, and the left winding roller 3012 and the right winding roller 3022 on the outer walls of the two are rotated, so as to achieve the effect of moving the screen 303 on the outer walls of the two. The left or right movement of the screen 303 will drive the raw material on its surface to move, and the raw material on the surface of the screen 303 can be moved under the action of the paddle 105, so that the raw material on the surface of the screen 303 can be controlled at a certain height to avoid the accumulation of raw material causing the screen 303 to be blocked, resulting in low filtration efficiency, thereby improving the filtration efficiency and effect of the raw material after crushing.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cement clinker production decomposition furnace capable of utilizing smelting tail gas, comprising a furnace body (1) and a material storage box (101) arranged above the outer sides of the outer walls of the furnace body, a discharge pipe (1012) being arranged at the center of the bottom of the material storage box (101), and the other end of the discharge pipe (1012) being installed at the center of the top of the crushing box (102), characterized in that: A drying component (2) is provided on the rear end surface of the material storage box (101), a paddle (105) is fixedly connected to the center position of the interior of the crushing box (102), and a filtering component (3) is provided at the lower part of the interior of the crushing box (102); The drying component (2) comprises a heating box (201) and an air outlet pipe (2011) arranged on one side above the heating box, and the other end of the air outlet pipe (2011) is connected to the air inlet end of the fan (202) via a pipe joint; The filtering assembly (3) comprises a left-rotating motor (301) and a right-rotating motor (302) symmetrically arranged on one side of the crushing box (102) with respect to the central plane thereof, and the output shaft of the left-rotating motor (301) is connected to the left driving shaft (3011) via a coupling.

2. The cement clinker production calciner capable of utilizing smelting tail gas according to claim 1, characterized in that: A feeding pipe (1011) is arranged at the top center of the material storage box (101), a valve (1013) is arranged on the outer wall of the material discharge pipe (1012), and a discharge pipe (1021) is arranged at the bottom center of the crushing box (102).

3. The cement clinker production calciner capable of utilizing smelting tail gas according to claim 2, characterized in that: A feeding mechanism (103) is provided at the bottom end of the feed pipe (1021), and crushing mechanisms (104) are provided at the front and rear of the top end of the crushing box (102).

4. The cement clinker production calciner capable of utilizing smelting tail gas according to claim 1, characterized in that: An air intake pipe (2012) is provided at the center of an outer wall of one side of the heating box (201), and the other end of the air intake pipe (2012) is connected to an external pipe (2013) and an air return pipe (2014) via a three-way joint.

5. The cement clinker production calciner capable of utilizing smelting tail gas according to claim 4, characterized in that: The other end of the air return pipe (2014) is arranged below the outer wall of one side of the material storage box (101), and filter screens (203) are evenly installed at intervals in the horizontal direction on one side of the interior of the heating box (201), and a heating wire (204) is suspended at the center of the heating box (201).

6. The cement clinker production calciner capable of utilizing smelting tail gas according to claim 5, characterized in that: The air outlet end of the fan (202) is connected to the annular tube (2021) via a pipe joint; the annular tube (2021) is located at the top end inside the material storage box (101); and nozzles (205) are evenly spaced at the bottom of the annular tube (2021) along the circumferential direction.

7. The cement clinker production calciner capable of utilizing smelting tail gas according to claim 1, characterized in that: The other end of the left drive shaft (3011) passes through a bearing on one side of the front end face of the crushing box (102) and is connected to a bearing on one side of the rear end face inside the crushing box (102); a left winding roller (3012) is sleeved on the outer side of the outer wall of the left drive shaft (3011); and the output shaft of the right rotating motor (302) is connected to the right drive shaft (3021) via a coupling.

8. The cement clinker production calciner capable of utilizing smelting tail gas according to claim 7, characterized in that: The other end of the right drive shaft (3021) passes through the bearing on the other side of the front end face of the crushing box (102) and is connected to the bearing on the other side of the rear end face inside the crushing box (102); a right winding roller (3022) is sleeved on the outer side of the outer wall of the right drive shaft (3021); and a screen (303) is wound around the outer sides of the outer walls of the left winding roller (3012) and the right winding roller (3022).

Images