CN115845547A

CN115845547A - Tar removing device and method and flue gas purification equipment with device

Info

Publication number: CN115845547A
Application number: CN202310193114.1A
Authority: CN
Inventors: 季天杰; 刘帅; 徐战虎
Original assignee: Suzhou Jiechen Environmental Technology Co ltd
Current assignee: Suzhou Jiechen Environmental Technology Co ltd
Priority date: 2023-03-03
Filing date: 2023-03-03
Publication date: 2023-03-28
Anticipated expiration: 2043-03-03
Also published as: CN115845547B

Abstract

The invention discloses a tar removal device, relates to the technical field of waste gas treatment, and comprises a combustion box and a tar adsorption tower. The filter plates which are spaced layer by layer are arranged in the tar adsorption tower, and are eccentrically overlapped together, so that the first aspect is that the filter plates which are spaced up and down and eccentrically overlapped can be provided with an adsorbent with a larger area below, and the adsorption effect on tar in the flue gas is improved; the second aspect is that when the filtering and adsorbing plate is impacted by the smoke, the flow direction of the filtering and adsorbing plate is changed, the distribution range of the smoke in the adsorbing bin is expanded, the utilization rate of the adsorbent is improved, and the adsorption effect on tar in the smoke is improved; the third aspect is that the smoke can contact with another one or more eccentric filtering and adsorbing plates after the flow direction of the smoke is changed, so that multiple times of adsorption are carried out, and the adsorption effect on tar in the smoke is improved again; and the fourth aspect is that the airflow strength of the smoke is gradually reduced through the layer-by-layer filtering and adsorbing plate, and the capture effect of the water mist on tar in the smoke is improved.

Description

Tar removing device and method and flue gas purification equipment with device

Technical Field

The invention relates to the technical field of waste gas treatment, in particular to a tar removal device.

Background

The modern industrial production can produce a large amount of smoke, the smoke contains tar which is mixed in the smoke in the form of water mist, the tar has complex components which are not less than 20, most of the tar is benzene derivatives (toluene, xylene, styrene and the like) and polycyclic aromatic hydrocarbon channels, and the tar and the toxic gas which is harmful to human bodies and the environment can be generated after the tar is combusted, so that the tar and the toxic gas must be effectively treated.

At present, for example, chinese patent CN110833751B discloses a "coke oven flue gas desulfurization synergistic tar adsorption device", which specifically discloses that after flue gas upwards enters a tar adsorption tank, the flue gas passes through a tar adsorbent and calcium oxide respectively placed in an upper adsorption tube, an extension adsorption tube and a lower adsorption tube, and water spraying of spraying mechanisms on two sides is combined, wherein calcium oxide reacts with sulfur dioxide to generate calcium sulfite precipitate, tar is absorbed by the tar adsorbent, dust is precipitated by liquid water mist, and the remaining gas is continuously upwards discharged through an external pipeline.

In the above patent technical scheme, a water washing method and a filtering method are adopted, wherein the water washing method is to make the smoke containing tar pass through a water bath box or a spraying mechanism (such as a venturi scrubber) and remove part of tar in the smoke by utilizing the inertial collision between tar particles and water drops, and the filtering method is to make the smoke pass through a tar adsorbent material so that the tar is adhered to the tar adsorbent material to be removed. However, in the prior art, the spraying mechanism usually adopts a nozzle and spray pipe structure, and due to the structural limitation, the mist formed by spraying can be round or conical, so that the mist can easily break through under the impact of high-concentration strong flue gas flow to cause leakage catching, and the treatment effect on tar in the flue gas is influenced. In addition, when the adsorption tube filters the smoke, the distribution area of the adsorption tube is limited, and the high-concentration strong smoke flow velocity is high, so that the tar adsorbent in the adsorption tube is difficult to filter the smoke, and therefore, the treatment effect on the tar in the smoke is also influenced.

Disclosure of Invention

One of the purposes of the invention is to solve the problem that the treatment effect of tar in flue gas is influenced because the flue gas is a strong high-concentration air flow and is not easily captured by water mist sprayed by a spraying mechanism and not easily filtered through an adsorption pipe when the tar in the flue gas is treated in the prior art.

The second purpose of the invention is to provide a tar removal method.

The invention also aims to provide flue gas purification equipment with a tar removal device.

In order to achieve one of the purposes, the invention adopts the following technical scheme: the utility model provides a tar removing device, is including burning case and tar adsorption tower, the burning case is located tar adsorption tower side, burning case side direction intercommunication the absorption storehouse of tar adsorption tower.

The filtering and adsorbing plates are arranged in the middle layer of the adsorbing bin, gaps are reserved among the filtering and adsorbing plates, and the filtering and adsorbing plates are stacked together in a shifting mode.

The filter adsorption plate is characterized in that a mounting port is formed in the lower end of the filter adsorption plate and used for filling an adsorbent for adsorbing tar in smoke, a filter plate is mounted below the mounting port, and the adsorbent is limited by the filter plate to move downwards to be separated from the mounting port.

The upper end face of the filtering and adsorbing plate is a water retaining surface for retaining water, a water inlet pipe is arranged above the water retaining surface, the water inlet pipe is connected with a spray head, and the spray head sprays the flue gas to remove tar in the flue gas.

In the technical scheme, when the device is used, the flue gas is introduced into the combustion box, the insufficiently combusted gas in the flue gas is fully combusted, then the flue gas is introduced into the bottom of the adsorption bin in the tar adsorption tower, the filtering adsorption plate which is eccentrically overlapped layer by layer is used for blocking in the process that the flue gas at the bottom of the adsorption bin is upward, and at the moment, the flue gas impacts the filtering adsorption plate and contacts with the adsorbent in the filtering adsorption plate, and the tar in the flue gas is adsorbed by the adsorbent.

The flue gas receives the filtration adsorption plate to block back air current intensity and reduces, the flue gas can't continue upwards, can only move to bypass the filtration adsorption plate and continue upwards along both sides direction, and filter and arrange with eccentric interval stack mode between the adsorption plate, make continuation ascending flue gas continue to block by the filtration adsorption plate of last layer and reduce air current intensity, continue to carry out the absorption to tar in the flue gas, flue gas this moment moves the filtration adsorption plate in order to bypass this layer along both sides direction again, the realization is to the diffusion of flue gas and to the absorption many times of tar in the flue gas.

When the flue gas lets in and adsorbs the storehouse or before, supply water to the inlet tube for the shower head is the downward blowout water smoke, and the water smoke receives the water-retaining surface of filtering adsorption plate upper end to block and falls down after removing along both sides, and the flue gas contact collision after with reduction air current intensity gets rid of the tar in the flue gas.

The invention has the beneficial effects that: according to the invention, the filtering and adsorbing plates are arranged in the tar adsorbing tower and are spaced layer by layer, and the filtering and adsorbing plates are eccentrically overlapped together, so that the first aspect is that the filter plates which are spaced up and down and are eccentrically overlapped can be provided with an adsorbent with a larger area below the filter plates, and the adsorption effect on tar in the flue gas is improved; the second aspect is that when the filtering and adsorbing plate is impacted by the smoke, the flow direction of the filtering and adsorbing plate is changed, the distribution range of the smoke in the adsorbing bin is expanded, the utilization rate of the adsorbent is improved, and the adsorption effect on tar in the smoke is improved; the third aspect is that the smoke can contact with another one or more eccentric filtering and adsorbing plates after the flow direction of the smoke is changed, so that multiple times of adsorption are carried out, and the adsorption effect on tar in the smoke is improved again; the fourth aspect is that the airflow strength of the smoke is gradually reduced through the layer-by-layer filtering and adsorbing plate, and the efficiency and the effect of water mist on capturing tar in the smoke are further improved; the fifth aspect is that the sprayed water mist is intensively distributed to two sides of the gap of the filtering and adsorbing plate under the blocking of the filtering and adsorbing plate, which is beneficial to intensively capturing tar in the smoke; the sixth aspect is that the sprayed water mist is separated by the water retaining surface on the upper end surface of the filtering and adsorbing plate, does not contact with the adsorbent, and forms double filtering without mutual interference with the adsorbent.

Through the six aspects, the invention achieves the best treatment effect on tar in the smoke.

Further, in the embodiment of the present invention, the filtering and adsorbing plates form a regular triangle, an inverted triangle or a diamond in a stacked manner.

Further, in the embodiment of the present invention, a liquid outlet is disposed at a lower end of the adsorption bin, and an air outlet is disposed at an upper end of the adsorption bin.

Further, in the embodiment of the invention, the front end and the rear end of the filtering and adsorbing plate are fixed on the side wall of the adsorbing bin or the filtering plate is fixed on a substrate through a connecting rod, the substrate is rotatably connected on the side wall of the adsorbing bin through a rotary head, and the rotary head and the substrate are fixed together with the tar adsorbing tower through bolts or nuts.

Further, in the embodiment of the invention, a combustion channel and a discharge channel are arranged in the combustion box along the longitudinal direction, the combustion channel is communicated with the discharge channel, the discharge channel is communicated with the adsorption bin, and an electric spark discharging needle is arranged on the side surface of the combustion channel.

After the flue gas enters the combustion box, the discharge spark needles are started to ignite the insufficiently combusted gas in the flue gas for full combustion, and the combusted gas enters the adsorption bin through the discharge channel.

Furthermore, in the embodiment of the present invention, the combustion channel is provided with a fire disc, the fire disc is provided with an outer disc and an inner disc, the outer disc is rotatably sleeved on the inner disc, an inner edge portion is arranged on the inner side of the outer disc, an outer edge portion is arranged on the outer side of the inner disc, the inner edge portion and the outer edge portion are in up-down sealing fit, and inner through holes arranged on the inner edge portion and outer through holes arranged on the outer edge portion are not in staggered connection.

When the flame temperature needs to be recycled, the fire plate is butted through the pipeline, the outer plate of the fire plate is screwed to rotate, the inner through hole of the outer plate is communicated with the outer through hole of the inner plate in an up-and-down contraposition mode, the flame of the combustion channel is enabled to run out of the fire plate through the inner through hole and the outer through hole, and therefore the flame temperature heating equipment is used.

In order to achieve the second purpose, the invention adopts the following technical scheme: a tar removal method applied to the tar removal apparatus described in one of the above objects of the invention, the tar removal method comprising the steps of:

let in the burning case with the flue gas in, it is abundant with the insufficient gas combustion of burning in the flue gas, later let in the bottom in tar adsorption tower internal adsorption storehouse with the flue gas, the flue gas in the adsorption storehouse bottom makes progress the in-process, blocks through layer upon layer eccentric stack's filtration adsorption plate, and the flue gas strikes the filtration adsorption plate this moment, contacts with the adsorbent in the filtration adsorption plate, through the tar in the adsorbent adsorption flue gas.

The flue gas receives the filtration adsorption plate to block back air current intensity and reduces, the flue gas can't continue upwards, can only move to bypass the filtration adsorption plate and continue upwards along both sides direction, and arrange with eccentric interval stack mode between the filtration adsorption plate, make continuation ascending flue gas continue to block and reduce air current intensity by the filtration adsorption plate of upper story, continue carrying out the absorption to tar in the flue gas, flue gas at this moment moves in order to bypass the filtration adsorption plate on this layer along both sides direction once more, the realization is to the diffusion of flue gas and to the absorption many times of tar in the flue gas.

Further, in the embodiment of the present invention, when the adsorption effect of the filtering and adsorbing plate on the tar in the flue gas is reduced, the bolt or the nut is screwed, the control substrate drives all the filtering and adsorbing plates to rotate upward, the spray head sprays and washes the filtering plate or the adsorbent in the filtering and adsorbing plate, the filtering holes of the filtering plate are dredged or the tar and water in the adsorbent are condensed into liquid to flow out, after that, the control substrate drives all the filtering and adsorbing plates to reset, and the bolt or the nut is screwed to fix again.

Further, in the embodiment of the invention, after the flue gas enters the combustion box, the discharge spark needle is started to ignite the insufficiently combusted gas in the flue gas for full combustion, and the combusted gas enters the adsorption bin through the discharge channel.

In order to achieve the third purpose, the invention adopts the following technical scheme: a flue gas cleaning plant having a tar removal device as described in one of the above objects.

Drawings

FIG. 1 is a schematic plan view of a tar removal device according to an embodiment of the present invention.

FIG. 2 is a schematic view of the arrangement of the filtering and adsorbing plate according to the embodiment of the present invention.

FIG. 3 is another schematic diagram of an embodiment of a filter adsorbent sheet according to the present invention.

FIG. 4 is a schematic view showing the construction of a combustion chamber according to an embodiment of the present invention.

Fig. 5 is a schematic perspective view of a fire tray according to an embodiment of the present invention.

In the attached drawings

10. The device comprises a combustion box 11, a combustion channel 12, a discharge channel 13 and a spark discharge needle;

20. the tar adsorption tower comprises a tar adsorption tower 21, an adsorption bin 22, a liquid discharge port 23, an exhaust port 24, a filtering adsorption plate 241, a mounting port 242, a filtering plate 243, a water retaining surface 25, an adsorbent 26, a water inlet pipe 27 and a spray header;

30. a base plate 31, a connecting rod 32 and a rotary head;

40. the fire plate 41, the outer plate 42, the inner plate 43, the inner edge 44, the inner through hole 45, the outer edge 46 and the outer through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

For simplicity and illustrative purposes, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. But it is obvious. To one of ordinary skill in the art, the embodiments may be practiced without limitation to these specific details. In some instances, well known tar removal methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. In addition, all embodiments may be used in combination with each other.

The first embodiment is as follows:

a tar removing device, as shown in figure 1, comprises a combustion box 10 and a tar adsorption tower 20, wherein the combustion box 10 is positioned at the side end of the tar adsorption tower 20, and the combustion box 10 is laterally communicated with an adsorption bin 21 of the tar adsorption tower 20.

As shown in fig. 1 and 2, the filtering and adsorbing plates 24 are arranged in layers in the adsorbing bin 21, gaps are left between the filtering and adsorbing plates 24, and the filtering and adsorbing plates 24 are stacked together in an offset manner.

The lower end of the filtering and adsorbing plate 24 is provided with a mounting port 241, the mounting port 241 is used for filling an adsorbent 25 for adsorbing tar in flue gas, a filter plate 242 is mounted below the mounting port 241, and the adsorbent 25 is limited by the filter plate 242 to move downwards to be separated from the mounting port 241.

The upper end surface of the filtering and adsorbing plate 24 is a water retaining surface 243 for retaining water, a water inlet pipe 26 is arranged above the water retaining surface 243, the water inlet pipe 26 is connected with a spray header 27, and the spray header 27 is used for spraying the flue gas to remove tar in the flue gas.

The implementation steps are as follows: let in the flue gas in combustion box 10, it is abundant with the insufficient gas burning of burning in the flue gas, later let in the bottom of adsorbing the storehouse 21 in the tar adsorption tower 20 with the flue gas, the flue gas in adsorbing the storehouse 21 bottom makes progress, stops through layer upon layer eccentric stack's filtration adsorption plate 24, and the flue gas strikes filtration adsorption plate 24 this moment, contacts with adsorbent 25 in the filtration adsorption plate 24, adsorbs the tar in the flue gas through adsorbent 25.

The flue gas receives filtration adsorption plate 24 to block back air current intensity and reduces, the flue gas can't continue upwards, can only move to bypass filtration adsorption plate 24 and continue upwards along both sides direction, and filter and arrange with eccentric interval stack mode between the adsorption plate 24, make continuation ascending flue gas continue to block by the filtration adsorption plate 24 of last layer and reduce air current intensity, continue to carry out the absorption to tar in the flue gas, flue gas this moment moves along both sides direction once more and in order to bypass filtration adsorption plate 24 on this layer, the realization is to the diffusion of flue gas and the absorption many times to tar in the flue gas.

When or before the flue gas is introduced into the adsorption bin 21, water is supplied to the water inlet pipe 26, so that the spray head 27 sprays water mist downwards, the water mist is stopped by the water retaining surface 243 at the upper end of the filtering and adsorbing plate 24 to move along two sides and then fall down, and the water mist is contacted and collided with the flue gas with reduced air flow strength to remove tar in the flue gas.

According to the invention, the filtering and adsorbing plates 24 are arranged in the tar adsorbing tower 20 and are spaced layer by layer, and the filtering and adsorbing plates 24 are eccentrically overlapped together, so that on the one hand, the filter plates 242 which are spaced up and down and are eccentrically overlapped can be provided with the adsorbent 25 with a larger area at the lower part, and the adsorption effect on tar in the flue gas is improved; the second aspect is that when the filtering and adsorbing plate 24 is impacted by the flue gas, the flow direction is changed, the distribution range of the flue gas in the adsorbing bin 21 is expanded, the utilization rate of the adsorbent 25 is improved, and the adsorption effect on tar in the flue gas is improved; the third aspect is that the smoke can contact with another one or more eccentric filtering and adsorbing plates 24 after the flow direction of the smoke is changed, so that multiple times of adsorption are carried out, and the adsorption effect on tar in the smoke is improved again; the fourth aspect is that the airflow intensity of the smoke is gradually reduced through the layer-by-layer filtering and adsorbing plate 24, and the efficiency and the effect of water mist on capturing tar in the smoke are further improved; the fifth aspect is that the sprayed water mist is intensively distributed to two sides of the gap of the filtering and adsorbing plate 24 under the blocking of the filtering and adsorbing plate 24, which is beneficial to intensively capturing tar in the smoke; in the sixth aspect, the sprayed mist is blocked by the water blocking surface 243 on the upper end surface of the filtering and adsorbing plate 24, and does not contact with the adsorbent 25, thereby forming double filtering without interfering with the adsorbent 25.

As shown in fig. 2, the filtering and adsorbing plates 24 are formed in a regular triangle shape, an inverted triangle shape, or a diamond shape in a superimposed manner.

As shown in fig. 1, a liquid discharge port 22 is opened at the lower end of the adsorption bin 21, and an air discharge port 23 is opened at the upper end of the adsorption bin 21.

As shown in fig. 2, the front and rear ends of the filtering and adsorbing plate 24 are fixed on the side wall of the adsorbing bin 21, as shown in fig. 3, or the filtering plate 242 is fixed on the base plate 30 by the connecting rod 31, the base plate 30 is rotatably connected on the side wall of the adsorbing bin 21 by the rotary head 32, and the rotary head 32 and the base plate 30 are fixed with the tar adsorbing tower 20 by bolts or nuts.

As shown in FIG. 4, a combustion channel 11 and a discharge channel 12 are arranged in the combustion box 10 along the longitudinal direction, the combustion channel 11 is communicated with the discharge channel 12, the discharge channel 12 is communicated with an adsorption bin 21, and an electric spark discharging needle 13 is arranged on the side surface of the combustion channel 11.

After the flue gas enters the combustion box 10, the electric spark discharging needle 13 is started to ignite the insufficiently combusted gas in the flue gas for full combustion, and the combusted gas enters the adsorption bin 21 through the discharge channel 12.

As shown in fig. 5, the combustion channel 11 is provided with the fire disc 40, the fire disc 40 has an outer disc 41 and an inner disc 42, the outer disc 41 is rotatably sleeved on the inner disc 42, an inner edge 43 is arranged on the inner side of the outer disc 41, an outer edge 45 is arranged on the outer side of the inner disc 42, the inner edge 43 and the outer edge 45 are in up-and-down sealing fit, and an inner through hole 44 arranged on the inner edge 43 and an outer through hole 46 arranged on the outer edge 45 are not communicated in a staggered manner.

When the flame temperature needs to be reused, the flame temperature is butted with the flame release plate 40 through a pipeline, and then the outer plate 41 of the flame release plate 40 is screwed to rotate, so that the inner through hole 44 of the outer plate 41 is communicated with the outer through hole 46 of the inner plate 42 in an up-and-down alignment manner, the flame of the combustion channel 11 is promoted to run out of the flame release plate 40 through the inner through hole 44 and the outer through hole 46, and the flame temperature heating equipment is used.

Example two:

a tar removal method is applied to the tar removal device in the first embodiment, and comprises the following steps:

let in the flue gas in combustion box 10, it is abundant with the insufficient gas burning of burning in the flue gas, later let in the bottom of adsorbing the storehouse 21 in the tar adsorption tower 20 with the flue gas, the flue gas in adsorbing the storehouse 21 bottom makes progress, stops through layer upon layer eccentric stack's filtration adsorption plate 24, and the flue gas strikes filtration adsorption plate 24 this moment, contacts with adsorbent 25 in the filtration adsorption plate 24, adsorbs the tar in the flue gas through adsorbent 25.

The flue gas receives filtration adsorption plate 24 to block back air current intensity and reduces, the flue gas can't continue upwards, can only move to bypass filtration adsorption plate 24 and continue upwards along both sides direction, and filter and arrange with eccentric interval stack mode between the adsorption plate 24, make continuation ascending flue gas continue to block and reduce air current intensity by the filtration adsorption plate 24 of last layer, continue to carry out the absorption to tar in the flue gas, flue gas at this moment moves in order to bypass the filtration adsorption plate 24 on this layer along both sides direction again, the realization is to the diffusion of flue gas and adsorb many times to tar in the flue gas.

When the adsorption effect of the filtering and adsorbing plate 24 on tar in the flue gas is reduced, the bolts or nuts are screwed, the control substrate 30 drives all the filtering and adsorbing plates 24 to rotate upwards, the spray header 27 sprays and washes the filtering plate 242 or the adsorbent 25 in the filtering and adsorbing plate 24, the filtering holes of the filtering plate 242 are dredged or tar and water in the adsorbent 25 are condensed into liquid to flow out, after that, the control substrate 30 drives all the filtering and adsorbing plates 24 to reset, and the bolts or nuts are screwed to fix again.

When the flame temperature needs to be reused, the fire plate 40 is butted through a pipeline, the outer plate 41 of the fire plate 40 is screwed to rotate, the inner through holes 44 of the outer plate 41 and the outer through holes 46 of the inner plate 42 are communicated in an up-and-down alignment mode, the flame of the combustion channel 11 is promoted to run out of the fire plate 40 through the inner through holes 44 and the outer through holes 46, and therefore the flame temperature heating device is used.

Example three:

a flue gas purification device, which is provided with a tar removal device in the first embodiment.

Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.

Claims

1. A tar removal device comprises a combustion box and a tar adsorption tower, and is characterized in that the combustion box is positioned at the side end of the tar adsorption tower, and the combustion box is laterally communicated with an adsorption bin of the tar adsorption tower;

the filtering and adsorbing plates are arranged in the middle layer of the adsorption bin, gaps are reserved among the filtering and adsorbing plates, and the filtering and adsorbing plates are overlapped together in a deviation mode;

the lower end of the filtering and adsorbing plate is provided with a mounting port, the mounting port is used for filling an adsorbent for adsorbing tar in smoke, a filter plate is arranged below the mounting port, and the filter plate limits the adsorbent to move downwards to be separated from the mounting port;

2. The tar removal device according to claim 1, wherein the filtering and adsorbing plates form a regular triangle, an inverted triangle or a diamond in a stacked manner.

3. The tar removal device according to claim 1, wherein a liquid discharge port is provided at a lower end of the adsorption bin, and an exhaust port is provided at an upper end of the adsorption bin.

4. The tar removing apparatus according to claim 1, wherein the front and rear ends of the filtering and adsorbing plate are fixed to the side wall of the adsorbing bin or the filtering plate is fixed to a base plate via a connecting rod, the base plate is rotatably connected to the side wall of the adsorbing bin via a swivel, and the swivel and the base plate are fixed to the tar adsorbing tower via bolts or nuts.

5. The tar removal device according to claim 1, wherein a combustion channel and a discharge channel are provided in the combustion box along a longitudinal direction, the combustion channel is communicated with the discharge channel, the discharge channel is communicated with the adsorption bin, and an electric discharge spark needle is provided on a side surface of the combustion channel.

6. The tar removing device according to claim 5, wherein the combustion channel is provided with a fire plate, the fire plate is provided with an outer plate and an inner plate, the outer plate is rotatably sleeved on the inner plate, an inner edge is arranged on the inner side of the outer plate, an outer edge is arranged on the outer side of the inner plate, the inner edge and the outer edge are in up-down sealing fit, and an inner perforation arranged on the inner edge is not communicated with an outer perforation arranged on the outer edge in a staggered manner.

7. A tar removal method, characterized by being applied to the tar removal apparatus according to any one of claims 1 to 6, the tar removal method comprising the steps of:

introducing flue gas into a combustion box, fully combusting gas which is not fully combusted in the flue gas, then introducing the flue gas into the bottom of an adsorption bin in a tar adsorption tower, blocking the flue gas by virtue of a filtering adsorption plate which is eccentrically superposed layer by layer in the upward process of the flue gas at the bottom of the adsorption bin, and impacting the filtering adsorption plate to contact with an adsorbent in the filtering adsorption plate at the moment so as to adsorb tar in the flue gas by virtue of the adsorbent;

after the smoke is blocked by the filtering and adsorbing plates, the strength of the airflow is reduced, the smoke cannot move upwards continuously and can only move upwards continuously along the directions of two sides to bypass the filtering and adsorbing plates to continue to move upwards, the filtering and adsorbing plates are arranged in an eccentric interval overlapping mode, so that the smoke which continues to move upwards is continuously blocked by the filtering and adsorbing plate on the upper layer to reduce the strength of the airflow and continues to adsorb tar in the smoke, and the smoke moves along the directions of two sides again to bypass the filtering and adsorbing plate on the upper layer, so that the diffusion of the smoke and the repeated adsorption of the tar in the smoke are realized;

8. The method for removing tar according to claim 7, wherein when the adsorption effect of the filtering and adsorbing plate on the tar in the flue gas is reduced, the bolts or nuts are screwed, the control substrate drives all the filtering and adsorbing plates to rotate upward, the spray head sprays the filter plates or the adsorbents in the filtering and adsorbing plates to dredge the filter holes of the filter plates or make the tar and water in the adsorbents to form liquid flow out, the control substrate drives all the filtering and adsorbing plates to reset after the completion, and the bolts or nuts are screwed to fix again.

9. The tar removal method according to claim 7, wherein the tar removal device according to claim 6 is used, after the flue gas enters the combustion box, the discharge spark needle is started to ignite the insufficiently combusted gas in the flue gas for sufficient combustion, and the combusted gas enters the adsorption bin through the discharge channel;

10. A flue gas cleaning plant, characterized in that it has a tar removal device according to any of the preceding claims 1-6.