CN114705047B

CN114705047B - A dewaxing device for sintering furnace

Info

Publication number: CN114705047B
Application number: CN202210354474.0A
Authority: CN
Inventors: 刘赞; 李应新; 汪明月; 宋汝轩; 王洲阳
Original assignee: Zhuzhou Ruidel Intelligent Equipment Co ltd
Current assignee: Zhuzhou Ruidel Intelligent Thermal Equipment Co ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2024-11-29
Anticipated expiration: 2042-04-02
Also published as: CN114705047A

Abstract

The invention discloses a dewaxing device for a sintering furnace, which is characterized by comprising one or more dewaxing devices, wherein at least one dewaxing device is internally provided with a pall ring, conical surface filling is arranged in the pall ring, one surface with smaller area faces an air inlet, and the other surface with larger area faces an air outlet in the conical surface filling. According to the invention, the inner cylinder of the primary dewaxing device adopts the pall ring conical surface filling mode, the area of the air inlet is small, and under the condition that the air flow is unchanged, the air can be compressed and fully contacted with the filler, so that the filtering performance of the primary dewaxing device is improved, the problems of a filter, residual wax in a pump cavity, insufficient wax containing capacity of the dewaxing device and the like are solved, the cost is saved, and the service life of parts of a sintering furnace is prolonged.

Description

Dewaxing device for sintering furnace

Technical Field

The invention relates to the technical field of paraffin recovery, in particular to a paraffin recovery gas flow guiding structure.

Background

Product dewaxing is an essential ring in the operation of sintering furnaces and plays a critical role in product sintering. In the operation of the previous sintering furnace, the phenomena of filter, residual wax in the pump cavity, insufficient wax containing capacity of the dewaxing device and the like are generated, so that the product to be dewaxed in the equipment can be greatly influenced in quality, and even the service life of important spare parts of the sintering furnace is influenced.

Disclosure of Invention

In order to overcome the shortcomings of the prior art, an object of the present invention is to provide a solution to the above-mentioned problems of the background art.

The dewaxing device for the sintering furnace comprises one or more dewaxing devices, wherein pall rings are arranged in at least one dewaxing device, cone filling is arranged in the pall rings, the smaller area of the cone filling faces towards an air inlet, and the larger area of the cone filling faces towards an air outlet.

Preferably, the upper part of the pall ring conical surface is of an inclined structure, and the lower part of the pall ring conical surface is of a flat structure.

Preferably, the dewaxing device comprises 2 dewaxing devices, namely a first-stage dewaxing device and a second-stage dewaxing device, wherein the first-stage dewaxing device adopts a double-cylinder structure and consists of an external large sleeve and an internal inner cylinder, an air inlet of the inner cylinder is provided with a pall ring, an air inlet of the inner cylinder is far away from an air inlet end of the first-stage dewaxing device, the second-stage dewaxing device comprises a first guide pipe and a second guide pipe, the first guide pipe is communicated with the inner cylinder far away from the air inlet, and the bottom end of the second guide pipe is connected to the first-stage dewaxing device.

Preferably, a third conduit, a fourth conduit and a fifth conduit are arranged in the second conduit, the third conduit is inserted in the second conduit, the inner wall of the second conduit is communicated with the outer wall of the third conduit at intervals to form a first diversion interval, the fourth conduit is inserted in the third conduit, the inner wall of the third conduit is communicated with the outer wall of the fourth conduit at intervals to form a second diversion interval, the fifth conduit is inserted in the fourth conduit, the inner wall of the fourth conduit is communicated with the outer wall of the fifth conduit at intervals to form a third diversion interval, the first diversion interval is used for introducing water flow, the top end of the second diversion interval is used for introducing wax gas, the bottom end of the second diversion interval is communicated with the bottom end of the third diversion interval, the top end of the third diversion interval is connected with a wax discharge valve, and the fifth conduit is used for introducing water flow.

Preferably, a guide vane is arranged in the fifth conduit, and the guide vane is used for dividing the fifth conduit into a fourth guide interval.

Preferably, the top end of the first conduit is communicated with the top end of the second diversion interval through a connecting pipeline, and pipeline joints are arranged at two ends of the connecting pipeline.

Preferably, a pall ring is arranged in the first conduit, and an ignition wax collecting device is arranged at the top end of the first conduit.

Preferably, a plurality of baffles which are staggered and inclined downwards are arranged at the communication position of the first conduit and the first-stage dewaxing device, and the baffles form a bent air guide channel.

Preferably, the whole inclined placement of one-level dewaxing device, its bottom is provided with pipeline supporting component, and one side is provided with pressure dewaxing pipe assembly, pressure dewaxing pipe assembly with one-level dewaxing device bottom is linked together, pressure dewaxing pipe assembly with ignition album wax device is connected through the ignition basin album wax device.

Preferably, a wax collecting cylinder is arranged at the bottom of the second conduit, and a wax removing pipeline is arranged between the wax collecting cylinder and the second conduit.

Compared with the prior art, the invention has the beneficial effects that the inner cylinder of the primary dewaxing device adopts the pall ring conical surface filling mode, the area of the air inlet is small, the air can be compressed under the condition of unchanged air flow, and the air can fully contact with the filler, so that the filtering performance of the primary dewaxing device is improved, the problems of a filter, residual wax in a pump cavity, insufficient wax containing capacity of the dewaxing device and the like are solved, the cost is saved, and the service life of parts of the sintering furnace is prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a rear view of the present invention.

Fig. 4 is a schematic structural view of the second conduit.

The device comprises a first-stage dewaxing device, a second-stage dewaxing device, a sleeve, a 4-stage inner cylinder, a 5-stage pall ring, a 6-stage air inlet, a 7-stage air inlet, a 8-stage first guide pipe, a 9-stage second guide pipe, a 10-stage third guide pipe, a 11-stage fourth guide pipe, a 12-stage fifth guide pipe, a 13-stage first guide interval, a 14-stage second guide interval, a 15-stage third guide interval, a 16-stage fourth guide interval, a 17-stage connecting pipe, a 18-stage connecting pipe, a 19-stage ignition wax collecting device, a 20-stage baffle plate, a 21-stage pipe supporting component, a 22-stage pressure wax removing pipe component, a 23-stage ignition basin wax collecting device, a 24-stage wax collecting cylinder, a 25-stage wax removing pipe, a 26-stage wax removing valve, a 27-stage hydrogen pipe, a 28-stage ignition basin, a 29-control adjusting structure, a 30-stage ignition valve protecting cover, a 31-stage ignition cover, a 32-stage dewaxing system connecting pipe and a 33-stage pumping port.

Detailed Description

The invention will be further described with reference to the accompanying drawings and detailed description below:

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1-3, this embodiment discloses a dewaxing device for a sintering furnace, including one or more dewaxing devices, be equipped with pall ring 5 in at least one dewaxing device, be equipped with conical surface packing in the pall ring 5, just the area is less in the conical surface packing one side towards the air inlet, the area is great one side towards the gas outlet.

Wherein, the upper part of the pall ring conical surface is of an inclined structure, and the lower part is of a flat structure.

The filling mode of the pall ring conical surface is adopted, so that the area of the air inlet is small, gas can be compressed under the condition of unchanged air flow, the air can be fully contacted with the filler, the area of the air outlet is large, the influence on the air circulation rate is reduced, the filtering performance of the dewaxing device can be improved, and the phenomena of a filter, residual wax in a pump cavity, insufficient wax containing capacity of the dewaxing device and the like are prevented.

Specifically, this dewaxing device includes 2 dewaxing devices, is one-level dewaxing device 1 and second grade dewaxing device 2 respectively, one-level dewaxing device 1 adopts the double-cylinder structure, comprises outside big sleeve 3 and inside inner tube 4, the air inlet 6 of inner tube 4 is equipped with pall ring 5, the air inlet 7 of one-level dewaxing device 1 is kept away from to the air inlet 6 of inner tube 4, second grade dewaxing device 2 is including first pipe 8 and second pipe 9, first pipe 8 with air inlet 6 department is kept away from to inner tube 4 is linked together, the bottom of second pipe 9 is connected on one-level dewaxing device 1.

Wherein, all be equipped with pall ring 5 in inner tube 4, the first pipe 8, pall ring 5 of inner tube 4 is the conical surface structure in being close to inner tube 4 air inlet department, is equipped with the filler in, forms the conical surface and fills. In addition, the air inlet end of the inner cylinder 4 is inclined downwards, so that condensed wax liquid can conveniently flow into the sleeve 3, and the wax liquid is prevented from accumulating in the inner cylinder 4. The top end of the first conduit 8 is provided with an ignition wax collecting device 19.

In this embodiment, the ignition wax collecting device 19 includes hydrogen-passing pipeline 27, ignition basin 28 and control regulation structure 29, control regulation structure 29 controls the ignition, control regulation structure 29 sets up at hydrogen-passing pipeline 27 surface, hydrogen-passing pipeline 27 surface still is provided with ignition valve safety cover 30, ignition basin 28 sets up the top at hydrogen-passing pipeline 27, ignition basin 28 top is provided with ignition cover 31, hydrogen-passing pipeline 27 is normally open fire pipeline, normally open fire pipeline busbar comes out the back and need install the tempering preventer, the pipeline between tempering preventer and the ignition mouth adopts the stainless steel material.

The bottom of the second conduit 9 is provided with a wax collecting cylinder 24, and a wax removing pipeline 25 is arranged between the wax collecting cylinder 24 and the second conduit 9.

Specifically, a third conduit 10, a fourth conduit 11 and a fifth conduit 12 are arranged in the second conduit 9, the third conduit 10 is inserted into the second conduit 9, a first diversion space 13 is formed between the inner wall of the second conduit 9 and the outer wall of the third conduit 10, the fourth conduit 11 is inserted into the third conduit 10, a second diversion space 14 is formed between the inner wall of the third conduit 10 and the outer wall of the fourth conduit 11, the fifth conduit 12 is inserted into the fourth conduit 11, a third diversion space 15 is formed between the inner wall of the fourth conduit 11 and the outer wall of the fifth conduit 12, the first diversion space 13 is used for guiding water flow, the top end of the second diversion space 14 is used for guiding wax gas, the bottom end of the second diversion space 14 is communicated with the bottom end of the third diversion space 15, a wax discharge valve 26 is arranged at the top end of the third diversion space 15 in a connecting mode, and the fifth conduit 12 is used for guiding water flow.

Wherein, the de-waxing valve 26 is connected and provided with a pumping port connecting pipe 33, the other side of the pumping port connecting pipe 33 is connected and provided with a power pump, and the power pump is used for guiding the wax gas to flow in the second conduit 9 and discharging the wax gas which is not converted into liquid.

In addition, a dewaxing system meter device 32 is arranged at the top of the second conduit 9.

When the second guide pipe 9 is used for recycling the wax gas, the wax gas is introduced through the second guide interval 14, flows from top to bottom through the second guide interval 14, and is introduced into the bottom end of the third guide interval 15 from the bottom end of the second guide interval 14, so that the wax gas can flow from bottom to top at the third guide interval 15, the inner flow path side length of the wax gas is reduced, cold water is introduced into the first guide interval 13 and the fifth guide pipe 12 to form a water cooling device, the wax gas can be fully converted into liquid wax when encountering cold due to the long flow path of the wax gas, and then is discharged into the wax collecting cylinder 24 through the wax discharge pipeline, and meanwhile, the wax gas which is not changed into liquid state is discharged through the wax discharge valve 26.

In addition, a wax collecting inner sleeve is arranged in the second conduit 9, so that the flow guiding effect on the wax gas can be achieved.

The fifth conduit 12 is provided with a flow deflector therein, and the flow deflector is configured to divide the fifth conduit 12 into a fourth flow guiding space 16, so that the water flow in the fifth conduit 12 can flow through the fourth flow guiding space 16, and the water flow can flow in a roundabout way, thereby improving the utilization rate of the water flow.

The top end of the first conduit 8 is communicated with the top end of the second flow guide interval 14 through a connecting pipeline 17, pipeline connectors 18 are arranged at two ends of the connecting pipeline 17, and the connecting pipeline connectors are respectively connected with the second conduit 9 and the first conduit 8 for assembly, so that the assembly and the disassembly are more convenient, and later maintenance is facilitated.

In particular, the connecting duct 17 is inclined, downward with respect to the end of the second duct 9 and upward with respect to the end of the first duct 8, facilitating the introduction of the wax gas from the first duct 8 into the second duct 9.

In the embodiment, 2 dewaxing devices are adopted for dewaxing treatment, a pall ring conical surface filling mode is adopted through a first-stage dewaxing device 1, partial gas is filtered firstly, an air inlet 6 of an inner cylinder 4 is far away from an air inlet end 7 of the first-stage dewaxing device, the wax gas forms a roundabout guiding-out path in the device, the flowing length of the wax gas is increased, the wax gas enters a second-stage dewaxing device 2, the second-stage dewaxing device 2 comprises a first conduit 8 and a second conduit 9, the inner cylinder 4 is communicated with the first conduit 8, the wax gas enters the first conduit 8 and is carried out in two steps, one part of the wax gas directly passes through an ignition wax collecting device 19 on the first conduit 8 and then is discharged, the other part of the wax gas enters a second conduit 9 through a connecting pipeline 17, the other part of the wax gas becomes liquid when meeting cold, the liquid wax gas is discharged through a wax discharging pipeline 25, and the part of the wax gas becomes liquid is discharged through a wax discharging valve 26.

Specifically, the first pipe 8 with the intercommunication department of one-level dewaxing device 1 is equipped with a plurality of crisscross baffle 20 that incline downwards, the air guide passageway of buckling is constituteed to a plurality of baffles 20, through setting up baffle 20, can slow down gas flow rate for fully filter when wax gas gets into the pall ring structure in the first pipe 8, further improves its filtration performance.

Specifically, the primary dewaxing device 1 is arranged in an inclined manner, the bottom end of the primary dewaxing device is provided with a pipeline supporting component 21, one side of the primary dewaxing device is provided with a pressure dewaxing pipe component 22, the pressure dewaxing pipe component 22 is communicated with the bottom end of the primary dewaxing device 1, the primary dewaxing device is further provided with an ignition basin wax collecting device 23, the ignition basin wax collecting device 23 comprises a pipeline structure and a valve, one end of the pipeline structure is connected with the ignition wax collecting device 19, and the other end of the pipeline structure is provided with the valve and is adjacent to or communicated with the pressure dewaxing pipe component 22.

In this embodiment, the sleeve 3 of the primary dewaxing device 1 is inclined towards the direction of the pressure dewaxing pipe assembly 22, and one end of the pressure dewaxing pipe assembly 22 is communicated with the lower part or the bottom of the downward inclined end of the sleeve 3 of the primary dewaxing device 1, when the wax liquid exists in the sleeve 3, the liquid accumulation can be generated at the downward inclined end of the sleeve 3, so as to form a liquid seal-like effect, and the pressure dewaxing can be performed while dewaxing treatment is performed. If the ignition wax collecting device 19 still has a small amount of wax liquid, the ignition basin wax collecting device 23 can guide and discharge the wax liquid at the ignition wax collecting device 19.

In particular, the outlet height at the other end of the pressure wax drain tube assembly 22 is no higher than the highest point at the inlet of the inner barrel 4.

If the height of the other end of the pressure dewaxing tube assembly 22 is too high, for example, higher than the highest point at the air inlet of the inner cylinder 4, the air pressure in the first-stage dewaxing device 1 can promote the drainage of the wax liquid, but in the balanced state, the wax liquid may still be higher than the partial structure of the air inlet of the inner cylinder 4, so that the wax liquid is deposited in the inner cylinder 4, and the wax removal effect is affected.

According to the embodiment of the invention, the height of the outlet at the other end of the pressure paraffin removal pipe assembly 22 is not higher than the highest point at the air inlet of the inner cylinder 4, so that the equilibrium height of the paraffin in the sleeve 3 is not higher than the air inlet of the inner cylinder 4 when the paraffin is not influenced by external force. While in actual dewaxing the gas pressure in the sleeve 3 will be higher than the gas pressure at the other end of the pressure wax drain assembly 22, this gas pressure difference will further reduce the equilibrium height of the wax liquid in the sleeve 3.

In particular, the outlet height at the other end of the pressure wax drain tube assembly 22 is higher than the lowest point at the inlet of the inner barrel 4.

If the height of the other end of the pressure wax drain pipe assembly 22 is too low, for example, lower than the height at which the pressure wax drain pipe assembly 22 is connected to the sleeve 3, the wax liquid is completely discharged due to the siphon effect, and the lack of the liquid sealing effect can cause gas to flow out through the pressure wax drain pipe assembly 22, thereby affecting the dewaxing effect.

When no external force is exerted on the wax liquid, the balance height of the wax liquid in the sleeve 3 is higher than the lowest point of the air inlet of the inner cylinder 4. While in actual dewaxing the gas pressure in the sleeve 3 will be higher than the gas pressure at the other end of the pressure wax drain assembly 22, this gas pressure difference will further reduce the equilibrium height of the wax liquid in the sleeve 3. According to the embodiment of the invention, the outlet height at the other end of the pressure paraffin removal pipe assembly 22 is higher than the lowest point at the air inlet of the inner barrel 4, so that the situation that the gas flows out through the pressure paraffin removal pipe assembly 22 due to the fact that the whole paraffin liquid flows out due to the fact that the air pressure in the sleeve 3 is too high is avoided to the greatest extent.

It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the invention as defined in the appended claims.

Claims

1. A dewaxing device for a sintering furnace, characterized in that it comprises a primary dewaxing device and a secondary dewaxing device, the primary dewaxing device adopts a double-tube structure, which is composed of a large outer sleeve and an inner inner tube, the air inlet of the inner tube is provided with a ball ring, the ball ring is a conical filling, and the smaller area of the conical filling faces the air inlet, and the larger area faces the air outlet; the upper part of the ball ring conical surface is an inclined structure, and the lower part is a flat structure, the air inlet of the inner tube is far away from the air inlet end of the primary dewaxing device, the secondary dewaxing device comprises a first conduit and a second conduit, the first conduit is connected to the inner tube away from the air inlet, and the bottom end of the second conduit is connected to the primary dewaxing device; the second conduit is provided with a third conduit, a fourth conduit and a fifth conduit, the third conduit is inserted into the second conduit, and the inner wall of the second conduit and the outer wall of the third conduit are spaced to form a first guide gap; the fourth conduit is inserted into the third conduit , the inner wall of the third conduit and the outer wall of the fourth conduit are spaced to form a second guide gap; the fifth conduit is inserted into the fourth conduit, and the inner wall of the fourth conduit and the outer wall of the fifth conduit are spaced to form a third guide gap; the first guide gap is used to introduce water flow, the top of the second guide gap is used to introduce wax gas, the bottom end of the second guide gap is connected to the bottom end of the third guide gap, the top of the third guide gap is connected to a wax drain valve, and the fifth conduit is used to introduce water flow; the top of the first conduit is provided with an ignition wax collecting device, the first-level dewaxing device is placed tilted as a whole, and a pipeline support assembly is provided at its bottom end, and a pressure wax drain pipe assembly is provided on one side of the pipeline support assembly, the pressure wax drain pipe assembly is connected to the bottom end of the first-level dewaxing device, the pressure wax drain pipe assembly is connected to the ignition basin wax collecting device of the ignition wax collecting device, and the pressure wax drain pipe assembly uses the pressure difference between the air pressure in the sleeve and the external air pressure to drain wax.

2. A dewaxing device for a sintering furnace according to claim 1, characterized in that a guide plate is provided in the fifth conduit, and the guide plate is used to divide the fifth conduit into a fourth guide interval.

3. A dewaxing device for a sintering furnace according to claim 1, characterized in that the top end of the first conduit is connected to the top end of the second flow guide interval through a connecting pipe, and pipe joints are provided at both ends of the connecting pipe.

4. A dewaxing device for a sintering furnace according to claim 1, characterized in that a ball ring is provided in the first conduit.

5. A dewaxing device for a sintering furnace according to claim 1, characterized in that a plurality of staggered downwardly inclined baffles are provided at the connection point between the first conduit and the first-level dewaxing device, and the plurality of baffles form a bent air guide channel.

6 . The dewaxing device for a sintering furnace according to claim 1 , wherein a wax collecting cylinder is provided at the bottom of the second conduit, and a wax discharge pipe is provided between the wax collecting cylinder and the second conduit.