Complete set of roasting waste heat recovery equipment

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to complete roasting waste heat recovery equipment which comprises a grate cooler, a pipeline dust removal assembly, a boiler and a connecting pipe, the grate cooler, the pipeline dust removal assembly and the boiler are communicated through the connecting pipe, and the pipeline dust removal assembly comprises a dust falling pipe, an exhaust pipe, a fixing pipe and a dust exhaust pipe. The exhaust pipe is communicated with the grate cooler through a connecting pipe, the fixing pipe is communicated with the boiler through a connecting pipe, a dust blocking plate is fixedly connected to the interior of the dust falling pipe, a vertical plate is fixedly connected to the end, away from the dust falling pipe, of the dust blocking plate, and the dust blocking plate and the vertical plate are distributed in the dust falling pipe in a staggered mode. The grate cooler and the waste heat boiler are combined for use, waste heat of the kiln is recycled through the grate cooler to dry materials, meanwhile, steam generated by waste heat of lepidolite clinker is recycled through the waste heat boiler, and comprehensive waste heat recycling is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a complete set of roasting waste heat recovery equipment. Background Art

[0002] Lepidolite is also called "lepidolite", which often contains rubidium, cesium, etc. Monoclinic system. Often appears as a fine scale aggregate. Light purple, sometimes yellow-green. Glass luster. Mainly found in pegmatite, also found in greisen and high-temperature hydrothermal veins, it is a mineral raw material for extracting lithium.

[0003] In modern industrial production, efficient energy utilization is a key factor in improving economic benefits and environmental protection levels. Especially in the preparation process of lithium battery positive electrode materials, roasting lithium mica is an important process step, which generates a large amount of waste heat. The traditional process uses a water-cooled kiln and a pipeline system to process this waste heat. However, this method only recovers the waste heat of the kiln, but cannot effectively utilize the waste heat of the material, resulting in energy waste. Secondly, due to certain limitations in the design and operation of the pipeline system, the recovery efficiency of waste heat is not high, resulting in energy waste and low production efficiency. Therefore, there is an urgent need for a complete set of roasting waste heat recovery equipment to solve the above problems. Utility Model Content

[0004] Based on the deficiencies in the prior art mentioned in the above background technology, the utility model provides a complete set of roasting waste heat recovery equipment.

[0005] The utility model overcomes the above technical problems by adopting the following technical solutions, specifically:

[0006] A complete set of roasting waste heat recovery equipment, including a grate cooler, a pipeline dust removal component, a boiler and a connecting pipe, wherein the grate cooler, the pipeline dust removal component and the boiler are all connected through the connecting pipe;

[0007] The pipeline dust removal assembly includes a dust suppression pipe, an exhaust pipe, a fixed pipe and a dust exhaust pipe, the exhaust pipe is connected to the grate cooler through a connecting pipe, and the fixed pipe is connected to the boiler through a connecting pipe;

[0008] A dust shield is fixedly connected to the interior of the dust suppression pipe, and one end of the dust shield away from the dust suppression pipe is fixedly connected to a vertical plate, and the dust shield and the vertical plate are staggeredly distributed inside the dust suppression pipe.

[0009] As a further solution of the utility model: a first inclined plate is fixedly connected to an outer wall of one side of the vertical plate, and the first inclined plates are distributed at equal distances on the outer wall of one side of the vertical plate.

[0010] As a further solution of the utility model: an outer wall of one side of the vertical plate is provided with exhaust grooves distributed at equal distances, the exhaust grooves are located in the middle of the two groups of the first inclined plates, and the cross-section of the first inclined plates is wavy.

[0011] As a further solution of the utility model: the circumferential outer wall of the exhaust pipe is respectively provided with a temperature sensor and a first control valve, and the circumferential outer wall of the dust exhaust pipe is provided with a second control valve.

[0012] As a further solution of the utility model: a group of the dust shield plates are provided with a discharge groove on the top outer wall, and the inner walls on both sides of the discharge groove are fixedly connected with a second inclined plate.

[0013] As a further solution of the utility model: a discharge gap and an exhaust gap are formed at both ends of the second inclined plate and at both ends of the discharge trough respectively, and the elevation angle of the second inclined plate is greater than the elevation angle of the discharge trough.

[0014] As a further solution of the utility model: an accelerating tube is arranged inside the dust reduction tube, and the accelerating tube comprises an expansion part, a narrow throat part and a contraction part, and the expansion part and the contraction part are both fixedly connected to the dust reduction tube.

[0015] After adopting the above structure, the utility model has the following advantages compared with the prior art:

[0016] 1. In the utility model, the grate cooler, pipeline and boiler are provided, and the grate cooler is used in combination with the waste heat boiler. The waste heat of the kiln is recovered by the grate cooler to dry the material, and the steam generated by the waste heat of the lithium mica clinker is recovered by the waste heat boiler, so that the waste heat is fully recovered and utilized.

[0017] 2. In the present invention, by providing a pipeline dust removal component, impurities carried in the process of gas waste heat recovery can be pre-cleaned, thereby improving the heat exchange efficiency of the inlet section.

[0018] 3. In the utility model, through the setting of the accelerating tube, when the gas passes through multiple sets of dust shields for dust removal, it will enter the expansion part of the accelerating tube. At this time, the gas enters the narrow throat through the expansion part that shrinks from large to small toward the middle, and then passes through the contraction part that expands from small to large outward after passing through the narrow throat, so that the speed of the air flow in the accelerating tube changes due to the change of the internal cross-sectional area of ​​the tube body, thereby achieving an increase in the gas flow rate, allowing the gas to enter the boiler's heat exchange system more quickly, thereby improving the waste heat recovery efficiency of the entire recovery equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the waste heat recovery process structure of the utility model.

[0020] Figure 2It is a front structural schematic diagram of the pipeline dust removal component of the present utility model.

[0021] Figure 3 It is a schematic diagram of the semi-section structure of the pipeline dust removal component of the utility model.

[0022] Figure 4 It is a schematic diagram of the cross-sectional plan structure of the pipeline dust removal component of the utility model.

[0023] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0024] In the figure: 1. grate cooler; 2. pipeline dust removal assembly; 2001. dust suppression pipe; 2002. exhaust pipe; 2003. temperature sensor; 2004. first control valve; 2005. dust exhaust pipe; 2006. second control valve; 2007. fixed pipe; 2008. expansion part; 2009. narrow throat; 2010. contraction part; 2011. dust shield plate; 2012. vertical plate; 2013. exhaust slot; 2014. first inclined plate; 2015. discharge slot; 2016. second inclined plate; 3. boiler; 4. connecting pipe. DETAILED DESCRIPTION

[0025] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0028] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0029] See also Figure 1 to Figure 5 In the embodiment of the utility model, a complete set of roasting waste heat recovery equipment includes a grate cooler 1, a pipeline dust removal component 2, a boiler 3 and a connecting pipe 4, and the grate cooler 1, the pipeline dust removal component 2, and the boiler 3 are all connected through the connecting pipe 4;

[0030] The duct dust removal assembly 2 includes a dust suppression pipe 2001, an exhaust pipe 2002, a fixed pipe 2007 and a dust exhaust pipe 2005. The exhaust pipe 2002 is connected to the grate cooler 1 through a connecting pipe 4, and the fixed pipe 2007 is connected to the boiler 3 through a connecting pipe 4.

[0031] A dust shield plate 2011 is fixedly connected to the inside of the dust suppression pipe 2001, and a vertical plate 2012 is fixedly connected to one end of the dust shield plate 2011 away from the dust suppression pipe 2001. The dust shield plate 2011 and the vertical plate 2012 are staggeredly distributed inside the dust suppression pipe 2001. The grate cooler 1 is used in combination with the boiler 3. The waste heat of the kiln is recovered by the grate cooler 1 to dry the material, and the steam generated by the waste heat of the lithium mica clinker is recovered by the boiler 3, thereby realizing comprehensive recovery and utilization of the waste heat.

[0032] Preferably, a first inclined plate 2014 is fixedly connected to an outer wall of one side of the vertical plate 2012 , and the first inclined plates 2014 are distributed at equal distances on the outer wall of one side of the vertical plate 2012 .

[0033] Preferably, the outer wall of one side of the vertical plate 2012 is provided with exhaust grooves 2013 distributed at equal distances, and the exhaust grooves 2013 are located in the middle of the two groups of first inclined plates 2014. The cross-section of the first inclined plate 2014 is wavy. The dust shield plate 2011, the vertical plate 2012 and the first inclined plate 2014 all play a good role in dust blocking and dust reduction, realizing pre-dust reduction of the gas and improving the heat exchange efficiency of the inlet section.

[0034] Preferably, a temperature sensor 2003 and a first control valve 2004 are respectively provided on the circumferential outer wall of the exhaust pipe 2002 , and a second control valve 2006 is provided on the circumferential outer wall of the dust exhaust pipe 2005 .

[0035] Preferably, a discharge trough 2015 is provided on the top outer wall of a group of dust shield plates 2011, and the inner walls on both sides of the discharge trough 2015 are fixedly connected with a second inclined plate 2016, and the second inclined plate 2016 can block and reduce dust from the gas rising from the discharge trough 2015.

[0036] Preferably, the two ends of the second inclined plate 2016 and the two ends of the discharge trough 2015 respectively form a discharge gap and an exhaust gap. The elevation angle of the second inclined plate 2016 is greater than the elevation angle of the discharge trough 2015, so that the impurities blocked and separated in the gas can fall through the discharge gap.

[0037] Preferably, an accelerating tube is provided inside the dust reduction pipe 2001, and the accelerating tube includes an expansion portion 2008, a narrow throat portion 2009 and a contraction portion 2010. The expansion portion 2008 and the contraction portion 2010 are both fixedly connected to the dust reduction pipe 2001. When the gas passes through multiple sets of dust shields 2011 for dust removal, it will enter the expansion portion 2008 of the accelerating tube. At this time, the gas enters the narrow throat 2009 through the expansion portion 2008 that shrinks from large to small toward the middle, and then passes through the narrow throat 2009 and then passes through the contraction portion 2010 that expands from small to large outward, so that the speed of the airflow in the accelerating tube changes due to the change of the internal cross-sectional area of ​​the tube body, thereby achieving an increase in the gas flow rate, so that the gas can enter the heat exchange system of the boiler 3 more quickly.

[0038] Working principle: The grate cooler 1 is used to recover the waste heat from the kiln to dry the material, and the high-temperature gas generated subsequently enters the interior of the duct dust removal component 2 through the connecting pipe 4. After the gas enters the interior of the duct dust removal component 2, it will first be blocked by multiple sets of dust shields 2011 and vertical plates 2012. At the same time, some gas will flow into the upper part of the dust reduction pipe 2001 through the exhaust groove 2013. In this process, the dust shield 2011, the vertical plate 2012, the first inclined plate 2014 and the second inclined plate 2016 all play a good role in dust blocking and dust reduction, thus achieving pre-dust reduction of the gas and improving the heat exchange efficiency of the inlet section. After the gas passes through multiple sets of dust shields 2011 for dust removal, it will enter the expansion part 2008 of the accelerating tube. At this time, the gas enters the narrow throat 2009 through the expansion part 2008 that shrinks from large to small toward the middle, and then passes through the contraction part 2010 that expands outward from small to large after passing through the narrow throat 2009, so that the speed of the air flow in the accelerating tube changes due to the change of the internal cross-sectional area of ​​the tube body, thereby achieving an increase in the gas flow rate, allowing the gas to enter the heat exchange system of the boiler 3 more quickly, and using the boiler 3 to recover the steam generated by the waste heat of the lithium mica clinker, thereby achieving comprehensive recovery and utilization of the waste heat.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A complete set of equipment for recovering waste heat from roasting, comprising a grate cooler (1), a pipeline dust removal component (2), a boiler (3) and a connecting pipe (4), characterized in that: The grate cooler (1), the pipeline dust removal assembly (2), and the boiler (3) are all connected via a connecting pipe (4); The pipeline dust removal component (2) comprises a dust suppression pipe (2001), an exhaust pipe (2002), a fixed pipe (2007) and a dust exhaust pipe (2005); the exhaust pipe (2002) is connected to the grate cooler (1) via a connecting pipe (4); and the fixed pipe (2007) is connected to the boiler (3) via a connecting pipe (4); A dust shield (2011) is fixedly connected to the interior of the dust suppression pipe (2001), and a vertical plate (2012) is fixedly connected to one end of the dust shield (2011) away from the dust suppression pipe (2001), and the dust shield (2011) and the vertical plate (2012) are staggeredly distributed inside the dust suppression pipe (2001).

2. A complete set of roasting waste heat recovery equipment according to claim 1, characterized in that: A first inclined plate (2014) is fixedly connected to an outer wall on one side of the vertical plate (2012), and the first inclined plates (2014) are distributed at equal distances on an outer wall on one side of the vertical plate (2012).

3. A complete set of roasting waste heat recovery equipment according to claim 2, characterized in that: An outer wall of one side of the vertical plate (2012) is provided with exhaust grooves (2013) distributed at equal distances, and the exhaust grooves (2013) are located in the middle of the two groups of the first inclined plates (2014), and the cross section of the first inclined plates (2014) is wavy.

4. The roasting waste heat recovery equipment according to claim 1 is characterized in that: The circumferential outer wall of the exhaust pipe (2002) is respectively provided with a temperature sensor (2003) and a first control valve (2004), and the circumferential outer wall of the dust exhaust pipe (2005) is provided with a second control valve (2006).

5. The roasting waste heat recovery equipment according to claim 1 is characterized in that: A discharge groove (2015) is provided on the top outer wall of a group of the dust shield plates (2011), and the inner walls on both sides of the discharge groove (2015) are fixedly connected with a second inclined plate (2016).

6. A complete set of roasting waste heat recovery equipment according to claim 5, characterized in that: The two ends of the second inclined plate (2016) and the two ends of the discharge trough (2015) respectively form a discharge gap and an exhaust gap, and the elevation angle of the second inclined plate (2016) is greater than the elevation angle of the discharge trough (2015).

7. The roasting waste heat recovery equipment according to claim 1 is characterized in that: The dust suppression pipe (2001) An accelerating tube is arranged inside the accelerator, and the accelerating tube includes an expansion part (2008), a narrow throat part (2009) and a contraction part (2010). The expansion portion (2008) and the contraction portion (2010) are both fixedly connected to the dust suppression pipe (2001).

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