Disclosure of Invention
The invention aims to solve the technical problems that in the prior art, mineral powder is sprayed into an air inlet pipe through a powder spraying pipe to be mixed with hot regeneration tail gas, the flow rate of the hot regeneration tail gas in the air inlet pipe is very fast, the mineral powder is not sprayed into the air inlet pipe and is in a linear shape, the mineral powder can quickly reach the position of a bag-type dust collector under the action of high flow rate of the hot regeneration tail gas, the mineral powder cannot be fully fused with the hot regeneration tail gas, the effect of powder-coated asphalt fume is quite unsatisfactory, and the service life of the bag-type dust collector cannot be effectively prolonged.
The invention is realized in the following way:
In a first aspect, a fume removal device for plant-mixed thermal regeneration tail gas comprises a bag-type dust remover, a powder spraying device and a fume removal box body;
the middle part of the fume removal box body is provided with a tail gas output port, the tail gas output port is provided with an adjustable air door, and the input end of the bag-type dust remover is communicated with the tail gas output port;
The top of the oil smoke removing box body is provided with a tail gas input port, and the inner top wall of the oil smoke removing box body surrounds the tail gas input port and is provided with a plurality of powder spraying devices.
Further, the middle upper part of the fume removing box body is divided into a first cavity and a second cavity by a split flow baffle, the lower end of the split flow baffle extends downwards to a position close to the powder bin, the powder spraying device and the tail gas input port are arranged at the top of the second cavity, and the tail gas output port and the adjustable air door are arranged on the side wall of the first cavity.
Further, the powder bin is of an inverted cone-shaped structure.
Further, a slope for gradually narrowing the second chamber from top to bottom is formed at a side of the lower portion of the second chamber away from the flow dividing partition.
Further, the device also comprises a first material level indicator arranged at the upper part of the powder bin and a second material level indicator arranged at the lower part of the powder bin.
Further, the adjustable air door is an electrically adjustable shutter air door.
Further, an automatic discharging valve is arranged at the bottom of the powder bin.
In a second aspect, the method for removing the oil fume from the plant-mixed hot regenerated tail gas uses the oil fume removing device for the plant-mixed hot regenerated tail gas, and comprises the following steps:
introducing the hot regeneration tail gas generated by the regeneration roller into the fume removing box body through a tail gas input port, and simultaneously controlling each powder spraying device to continuously spray mineral powder towards the hot regeneration tail gas, so that the mineral powder and asphalt fume in the hot regeneration tail gas are subjected to primary fusion and powder wrapping, and particles are formed and deposited into a powder bin;
the primary fused thermal regeneration tail gas is continuously downwards flushed to a powder bin at the lower part of the fume removing box body, mineral powder in the powder bin is lifted upwards under the airflow impact action of the thermal regeneration tail gas, and forms local cyclone reflux with the thermal regeneration tail gas at the upper part of the powder bin, so that the mineral powder and asphalt fume in the thermal regeneration tail gas are subjected to secondary full fusion and powder wrapping, and particles are formed and deposited in the powder bin;
And introducing the hot regenerated tail gas after asphalt fume removal into a bag-type dust remover through a tail gas output port for dust removal and filtration.
Further, the method comprises the steps of:
When the storage amount of mineral powder in the powder bin reaches a preset high material level, controlling the bottom of the powder bin to be opened for discharging the mineral powder, and simultaneously controlling the adjustable air door to increase the opening and closing angle so as to increase the passing rate of the mineral powder;
When the storage amount of mineral powder in the powder bin is detected to reach a preset low material level, the bottom of the powder bin is controlled to be closed for discharging the mineral powder, and meanwhile, the adjustable air door is controlled to reduce the opening and closing angle, so that the passing rate of the mineral powder is reduced.
The invention adopts a bag-type dust remover and a regeneration roller, wherein a fume removing box body is arranged between the bag-type dust remover and the regeneration roller, the middle part of the fume removing box body is communicated with the bag-type dust remover, a powder bin for storing mineral powder is formed at the bottom of the fume removing box body, and a plurality of powder spraying devices are arranged at the top of the fume removing box body around a tail gas input port; when the hot regeneration tail gas generated by the regeneration roller is introduced into the oil smoke removing box body through the tail gas inlet, powder can be continuously sprayed towards the hot regeneration tail gas by utilizing each powder spraying device, so that the mineral powder and the asphalt fume in the hot regeneration tail gas are fused and wrapped for one time and form particles to be deposited to the powder bin, meanwhile, the hot regeneration tail gas after one time fusion can continuously flow downwards to the powder bin at the lower part of the oil smoke removing box body, the mineral powder stored in the powder bin can lift upwards under the air flow impact action of the hot regeneration tail gas and form local cyclone reflux with the hot regeneration tail gas at the upper part of the powder bin, and the mineral powder and the asphalt fume in the hot regeneration tail gas can be fused and wrapped for two times and form particles to be deposited to the powder bin.
Detailed Description
In order to better understand the technical scheme of the present invention, the following detailed description will refer to the accompanying drawings and specific embodiments.
It should be noted herein that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience in describing these embodiments and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operate in a specific orientation. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature.
Example 1
Referring to fig. 1 to 4, the invention discloses a fume removal device 100 for plant-mixed thermal regeneration tail gas, wherein the fume removal device 100 comprises a bag-type dust collector 1, a powder spraying device 2 and a fume removal box 3;
the middle part of the fume removal box body 3 is provided with a tail gas output port 31, the tail gas output port 31 is provided with an adjustable air door 4, and the input end of the bag-type dust collector 1 is communicated with the tail gas output port 31, so that the hot regenerated tail gas can enter the bag-type dust collector 1 through the tail gas output port 31 for dust removal and filtration;
The top of the oil fume box body 3 is provided with a tail gas input port 33 so as to introduce the hot regeneration tail gas generated by the regeneration roller into the oil fume box body 3 by utilizing the tail gas input port 33, and the inner top wall of the oil fume box body 3 is provided with a plurality of powder spraying devices 2 around the tail gas input port 33 so as to spray powder towards the hot regeneration tail gas by utilizing the powder spraying devices 2. In the embodiment of the invention, a plurality of powder spraying devices 2 can be distributed around the tail gas input port 33 at equal intervals, and each powder spraying device 2 is controlled to uniformly and uninterruptedly spray the input thermal regeneration tail gas.
Because the prior art sprays mineral powder into the air inlet pipe through the powder spraying pipe to be mixed with the hot regeneration tail gas, the flow rate of the hot regeneration tail gas in the air inlet pipe is very fast when in actual work, the mineral powder can not be sprayed to form a linear shape after being sprayed into the air inlet pipe, and the flow rate of the hot regeneration tail gas is very fast, so that the mineral powder can quickly reach the inside of the cloth bag dust remover along with the hot regeneration tail gas, the contact time of the mineral powder and the hot regeneration tail gas is very short, the mineral powder can not be fully fused with asphalt fume in the hot regeneration tail gas, the effect of wrapping the asphalt fume by the powder is quite unsatisfactory, the service life of the cloth bag dust remover can not be effectively improved, and the cost for replacing one cloth bag dust remover by the system every time is hundreds of thousands, so how to effectively improve the service life of the cloth bag dust remover is always an important technical problem which puzzles technical personnel in industry. According to the invention, the traditional powder spraying mode is changed, the smoke removing box body 3 is arranged between the cloth bag dust remover 1 and the regeneration roller, the middle part of the smoke removing box body 3 is communicated with the cloth bag dust remover 1, the powder bin 32 for storing mineral powder is formed at the bottom of the smoke removing box body 3, the plurality of powder spraying devices 2 are arranged around the tail gas input port 33 at the top of the smoke removing box body 3, so that when the heat regeneration tail gas generated by the regeneration roller is introduced into the smoke removing box body 3 through the tail gas input port 33 in specific operation, the powder spraying devices 2 can be used for continuously spraying powder towards the heat regeneration tail gas, so that the mineral powder and the asphalt fume in the heat regeneration tail gas are subjected to primary fusion and form particles to be deposited to the powder bin 32, meanwhile, the heat regeneration tail gas after primary fusion can continuously flow downwards to the powder bin 32 at the lower part of the smoke removing box body 3, the mineral powder stored in the powder bin 32 can be lifted upwards under the airflow effect of the heat regeneration tail gas, and form local reflux with the heat regeneration tail gas at the upper part of the powder bin 32, so that the dust collector cloth bag 1 can not fully enter the heat dust remover 1, and the asphalt fume can not fully enter the cloth bag dust remover 1, and the dust collector is fully removed due to the fact that the dust is fully has low in the air permeability.
In some embodiments of the present invention, the middle upper portion of the fume removal box 3 is divided into a first chamber 34 and a second chamber 35 by a dividing partition 5, the lower end of the dividing partition 5 extends downward to a position close to the powder bin 32, the powder spraying device 2 and the tail gas input port 33 are arranged at the top of the second chamber 35, and the tail gas output port 31 and the adjustable damper 4 are arranged at the side wall of the first chamber 34.
According to the invention, the middle upper part of the fume removing box body 3 is divided into the first chamber 34 and the second chamber 35 by the split baffle plate 5, the powder spraying device 2 and the tail gas input port 33 are arranged at the top of the second chamber 35, and the tail gas output port 31 and the adjustable air door 4 are arranged on the side wall of the first chamber 34, so that when the fume removing box works specifically, the hot regenerated tail gas entering from the tail gas input port 33 can only enter the first chamber 34 continuously upwards after downwards impacting the mineral powder in the powder bin 32 along the second chamber 35 and is output through the tail gas output port 31, and cannot be directly output from the tail gas output port 31 of the first chamber 34, and the asphalt fume in the hot regenerated tail gas can be effectively removed.
In some embodiments of the present invention, the powder bin 32 has a reverse cone structure, so that not only can excessive mineral powder be conveniently discharged from the bottom of the powder bin 32, but also the top space of the powder bin 32 is larger, the thermal regeneration tail gas has a larger contact area with the mineral powder, and asphalt fume in the thermal regeneration tail gas can be ensured to be more fully fused with the mineral powder, thereby more reliably removing the asphalt fume in the thermal regeneration tail gas.
In some embodiments of the present invention, the lower part of the second chamber 35 is formed with an inclined surface 351 on a side far from the dividing partition 5 for gradually narrowing the second chamber 35 from top to bottom, and by adopting the design of the inclined surface 351, on one hand, the hot regeneration tail gas can be better led into the powder bin 32 to be fused with mineral powder, on the other hand, the second chamber 35 is gradually narrowed from top to bottom, and after passing through the second chamber 35, the hot regeneration tail gas can better impact the mineral powder in the powder bin 32, so that the mineral powder can be better raised and fully fused with the asphalt fume of the hot regeneration tail gas.
In some embodiments of the present invention, the oil smoke removing apparatus 100 further includes a first level gauge 61 disposed at an upper portion of the powder bin 32 and a second level gauge 62 disposed at a lower portion of the powder bin 32, wherein the first level gauge 61 is used for detecting a high level and the second level gauge 62 is used for detecting a low level. When the first level gauge 61 detects that the storage amount of mineral powder in the powder bin 32 reaches a preset high level, the bottom of the powder bin 32 is controlled to be opened for discharging the mineral powder, meanwhile, the adjustable air door 4 is controlled to increase the opening and closing angle so as to increase the passing rate of the mineral powder, and when the second level gauge 62 detects that the storage amount of the mineral powder in the powder bin 32 reaches a preset low level, the bottom of the powder bin 32 is controlled to be closed for discharging the mineral powder, and meanwhile, the adjustable air door 4 is controlled to be decreased in opening and closing angle so as to decrease the passing rate of the mineral powder.
In some embodiments of the present invention, the adjustable damper 4 is an electrically adjustable shutter damper, so as to control the adjustable damper 4 to automatically adjust the opening and closing angle.
In some embodiments of the present invention, the bottom of the powder bin 32 is provided with an automatic discharging valve 7, so that the automatic discharging valve 7 is used for controlling the bottom of the powder bin 32 to perform automatic discharging, and as a specific embodiment of the present invention, the automatic discharging valve 7 may be a pneumatic valve.
Example two
Referring to fig. 1 to fig. 4, in the method for removing oil smoke from plant-mixed hot regenerated tail gas according to the present invention, the oil smoke removing device 100 for plant-mixed hot regenerated tail gas is used, and the specific structure and the obtained technical effects of the oil smoke removing device 100 are identical to those of the first embodiment, and detailed description of the first embodiment is omitted herein;
the method comprises the following steps:
The method comprises the steps of introducing hot regeneration tail gas generated by a regeneration roller into a fume removing box body 3 through a tail gas input port 33, and simultaneously controlling each powder spraying device 2 to continuously spray mineral powder towards the hot regeneration tail gas, so that the mineral powder and asphalt fume in the hot regeneration tail gas are fused and wrapped for one time and form particles to be deposited into a powder bin 32 to primarily remove the asphalt fume in the hot regeneration tail gas;
The primary fused hot regeneration tail gas is continuously downwards flushed to the powder bin 32 at the lower part of the fume removing box body 3, mineral powder in the powder bin 32 can be upwards lifted under the airflow impact action of the hot regeneration tail gas, and forms local cyclone reflux with the hot regeneration tail gas at the upper part of the powder bin 32, so that the mineral powder and asphalt fume in the hot regeneration tail gas are subjected to secondary full fusion and powder wrapping, and form particles to be deposited in the powder bin 32, thereby further effectively removing the asphalt fume in the hot regeneration tail gas;
The hot regenerated tail gas after asphalt fume removal is introduced into the bag-type dust remover 1 through a tail gas outlet 31 for dust removal and filtration.
In some embodiments of the present invention, to maintain the mineral powder storage within the bin 32 in a dynamic equilibrium state to ensure adequate fusion of the mineral powder with the bitumen fumes in the hot regeneration tail gas, the method includes:
as shown in fig. 3, when the storage amount of the mineral powder in the powder bin 32 is detected to reach a preset high material level, the bottom of the powder bin 32 is controlled to be opened for discharging the mineral powder, and meanwhile, the adjustable air door 4 is controlled to increase the opening and closing angle, so that the passing rate of the mineral powder is increased even if the gap of the adjustable air door 4 is increased, and the powder storage rate is reduced;
As shown in fig. 4, when it is detected that the storage amount of the ore powder in the bin 32 reaches a preset low level, the bottom of the bin 32 is controlled to close and discharge the ore powder, and the adjustable damper 4 is controlled to reduce the opening and closing angle, even if the gap of the adjustable damper 4 becomes smaller, the passing rate of the ore powder is reduced, thereby improving the powder storage rate.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the invention, and that equivalent modifications and variations of the invention in light of the spirit of the invention will be covered by the claims of the present invention.