CN217737222U - Tail gas treatment furnace containing tar and coal powder - Google Patents

Abstract

The utility model provides a tail gas treatment furnace that contains tar buggy, relates to tail gas treatment equipment technical field, solves the easy technique of blockking up of current equipment carbonization tail gas pipeline, easy deposit dust particle in the later boiler not enough, and the technical scheme of adoption includes: the furnace body is provided with a heat accumulator in an inner cavity, the heat accumulator is provided with a plurality of Venturi type channels and a tail gas straight channel which are communicated with the gas collection chamber and the mixed temperature chamber, and two ends of the furnace body are provided with an air inlet pipeline and an air outlet pipeline which are respectively communicated to the gas collection chamber and the mixed temperature chamber. The furnace body is provided with a combustion-supporting gas pipeline extending to the throat of the Venturi pipeline through the gas collection chamber and a burner extending to the Venturi pipeline through the heat accumulator. The utility model discloses a tar and buggy in the venturi type pipeline are got rid of in the combustion-supporting gas oxidation, utilize the oxidation to release heat and the heat accumulator further heats tail gas, have reduced a large amount of dust particles and have got into the back process, have avoided the tar in the tail gas because of agglomerating and block up the pipeline, have realized activated carbon preparation facilities's safety, stability, long period operation.

Description

Tail gas treatment furnace containing tar and coal powder

Technical Field

The utility model relates to a tail gas treatment facility technical field in the active carbon production, more specifically relate to one kind can carry out the tail gas processing apparatus of preliminary treatment to part tar and buggy wherein before tail gas is sent into to burn burning furnace and burns.

Background

The tail gas of the carbonization furnace in the preparation process of the activated carbon contains a large amount of combustible gas, if the tail gas is directly discharged, air pollution can be caused, and the waste of the combustible gas can be caused.

The combustible components contained in the carbonized tail gas mainly comprise tar and coal powder, the combustible components are gasified at about 300 ℃, the conveying pipeline for guiding the carbonized tail gas into the subsequent incinerator is longer, the temperature is reduced to be lower than the boiling point of the tar in the tail gas conveying process, the tar in the tail gas is condensed in the pipeline, meanwhile, the coal powder meets the low-temperature pipeline continuously and is condensed on the pipe wall, and finally, the pipeline is blocked quickly. In addition, the coal dust in the carbonized tail gas can not be completely combusted after entering the incinerator, so that a large amount of dust particles enter the subsequent process, the coal dust can be deposited in the waste heat boiler after a period of time, finally, the boiler cannot operate, and explosion hidden danger exists.

SUMMERY OF THE UTILITY MODEL

To sum up, the utility model aims to provide a can be before carbonization tail gas gets into the incinerator, partial tar and buggy wherein oxidation treatment in advance to improve the delivery temperature of tail gas, thereby solve the problem that pipeline that exists blocks up, the buggy burns thoroughly, deposit dust particle in a large number in the later process among the prior art.

In order to solve the technical problem, the utility model provides a tail gas treatment furnace containing tar and coal dust, which is characterized in that the furnace comprises:

the furnace body is internally provided with a heat accumulator which divides the inner cavity of the furnace body into a gas collection chamber and a mixed temperature chamber, and both ends of the furnace body are provided with a gas inlet pipeline and a gas outlet pipeline which are respectively communicated with the gas collection chamber and the mixed temperature chamber and are used for inputting and discharging carbonized tail gas;

the plurality of Venturi type channels are penetratingly arranged on the heat accumulator and used for guiding part of carbonized tail gas in the gas collection chamber into the temperature mixing chamber through the heat accumulator;

the combustion-supporting gas pipelines are arranged on the furnace body, respectively extend to the throat of the Venturi passage through gas collection chambers correspondingly and are used for introducing combustion-supporting gas;

the burners are arranged on the furnace body, respectively extend to the Venturi type channel through the heat accumulator correspondingly, and are used for heating the heat accumulator and oxidizing tar and coal powder in the carbonized tail gas in the Venturi type channel through the combustion-supporting gas;

and the tail gas straight channels are penetratingly arranged on the heat accumulator and uniformly distributed around the Venturi-type channel and are used for guiding the rest carbonized tail gas in the gas collection chamber into the mixing chamber through the heat accumulator.

Furthermore, the furnace body is of a vertical structure, the gas collection chamber is arranged at the upper end of an inner cavity of the furnace body, the gas mixing chamber is arranged at the lower end of the inner cavity of the furnace body, and the Venturi channel and the tail gas straight channel are vertically and uniformly distributed on the heat accumulator.

Further, the treatment furnace further comprises:

the waste collecting chamber is arranged at the lower end of the mixing chamber, is communicated with the mixing chamber, has a funnel-type structure and is used for collecting ash residues settled in the mixing chamber;

and the waste discharge port is arranged at the bottom of the furnace body, is communicated with the waste collection chamber and is used for leaking collected ash.

Furthermore, the waste discharge port is provided with a waste discharge cover plate or a waste discharge valve which can be opened and closed.

Furthermore, the Venturi type channel comprises a contraction section, a throat and a diffusion section, the contraction section is communicated with the gas collection chamber, the diffusion section is communicated with the mixed temperature chamber, and the throat is close to one side of the contraction section.

Furthermore, the combustion-supporting gas pipeline axially extends to the throat in a one-to-one correspondence manner through the gas collection chamber and the contraction section, and the end part of the combustion-supporting gas pipeline extending to the throat is of a tip structure which is contracted and gathered.

Furthermore, the burner is detachably connected to the side wall of the furnace body and radially extends to the diffusion section in the middle of the Venturi-type channel through the heat accumulators in a one-to-one correspondence manner.

Further, the treatment furnace further comprises:

the maintenance population is arranged at one end of the furnace body and is communicated with the gas collection chamber;

and the manhole cover can be installed on the overhaul population in an opening and closing manner so as to seal the gas collection chamber, and the combustion-supporting gas pipeline is fixedly arranged on the body in a penetrating manner.

Furthermore, the tail gas straight channel is a cylindrical channel, and the inner diameter and the setting number of the tail gas straight channel are subject to the condition that the tail gas throughput in unit time is greater than that of the Venturi channel.

Furthermore, the Venturi type channel and the tail gas straight channel are both made of the heat accumulator body through die casting or extrusion injection molding.

The utility model discloses utilize the combustor to heat the heat accumulator, utilize the combustion-supporting gas pipeline that extends venturi channel's throat department through the collection chamber to leading-in combustion-supporting gas in the venturi channel, can form certain negative pressure in the entrance when the high-speed throat department of flowing through of combustion-supporting gas to make the high-speed suction venturi channel of partial carbonization tail gas in the collection chamber in and with leading-in combustion-supporting gas intensive mixing. The heat accumulator is heated by the burner, the combustion-supporting gas entering through the combustion-supporting gas pipeline and the tar and the coal powder in the carbonized tail gas are subjected to oxidation reaction under high temperature, so that the tar and the coal powder in the combustible carbonized tail gas are oxidized, part of heat generated by oxidation is continuously heated in the heat accumulator, and part of heat is guided into the mixing chamber through the Venturi type channel so as to continuously heat the carbonized tail gas which is mixed in the mixing chamber and discharged through the tail gas straight channel and the Venturi type channel. The carbonized tail gas mixed in the temperature mixing chamber is further heated and then is guided into an incinerator of the next working procedure for combustion through an air outlet pipeline.

The utility model has the advantages that:

1. the utility model discloses tar and buggy in the carbonization tail gas of treating the leading-in combustion-supporting gas of stove accessible combustion-supporting gas pipeline in with venturi type passageway carry out oxidation treatment, thereby before carbonization tail gas is by the incinerator of leading-in back end process, partial tar and buggy wherein are got rid of in the oxidation, showing and having reduced the quantity that gets into the dust granule in the back end process, the deposit of buggy in the back end exhaust-heat boiler has been avoided, prevent the boiler trouble because of the buggy deposit leads to, the emergence of unusual accidents such as explosion, the security that carbonization tail gas was handled has been improved, reliability.

2. The utility model discloses the heat that handles stove accessible venturi type passageway and utilize carbonization tail gas tar in combustion-supporting gas and the passageway, buggy oxidation reaction produces continues to heat the heat accumulator, can also improve the temperature of carbonization tail gas in the direct passageway of tail gas when promoting oxidation reaction, and the heat that combines heat accumulator own temperature and oxidation reaction to produce continues to heat the carbonization tail gas of mixing in the greenhouse, thereby improve the temperature through the pipeline exhaust carbonization tail gas of giving vent to anger, the tar that leads to because of carbonization tail gas temperature is low has effectively been solved, the problem of the pipe blockage that the buggy gathers and arouse in the pipeline, the continuity and the reliability of carbonization tail gas treatment have been guaranteed.

Drawings

In order to more clearly illustrate the technical solution of the treatment furnace of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some specific embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the treatment furnace of the present invention;

FIG. 2 is an exploded view of the whole structure of the treatment furnace of the present invention;

FIG. 3 is a sectional view of the whole structure of the treatment furnace of the present invention.

In the figure: 1. the burner comprises a furnace body, 11 parts of a gas collection chamber, 12 parts of a mixing chamber, 13 parts of a waste collection chamber, 14 parts of a waste discharge port, 15 parts of a waste discharge cover plate, 16 parts of a first fixing hole, 17 parts of a burner fixing cylinder, 171 parts of a third connecting flange, 18 parts of a maintenance population, 19 parts of a population cover, 2 parts of a heat accumulator, 21 parts of a Venturi type channel, 211 parts of a throat channel, 212 parts of a contraction section, 213 parts of a diffusion section, 22 parts of a tail gas straight channel, 23 parts of a first fixing channel, 3 parts of a combustion-supporting gas pipeline, 31 parts of a first connecting flange, 4 parts of the burner, 41 parts of a flame spray pipe, 42 parts of an automatic ignition control device, 43 parts of a mixing pressure regulating device, 44 parts of a gas joint, 45 parts of an oxygen joint, 46 parts of a second connecting flange, 5 parts of an air inlet pipeline and 6 parts of an air outlet pipeline.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the treatment furnace of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without any inventive step belong to the scope of protection of this patent.

It should be understood that the terms "two ends", "around", "upper end", "lower end", "one side", "top", "bottom" and "side wall" are used in the description of the present invention, and the terms "two ends", "around", "upper end", "lower end", "one side", "top", "bottom" and "side wall" are used in the drawings to indicate the orientation and positional relationship, and are used only for convenience of describing the structure and operation of the present invention, but not to indicate or imply that the parts referred to must have a specific orientation, operate in a specific orientation, and thus, should not be construed as limiting the present patent.

An object of the utility model is to provide a tail gas treatment furnace that contains tar buggy, oxidation treatment falls partial tar and buggy in the carbonization tail gas in advance, and improve the temperature of exhaust tail gas, thereby reduce during a large amount of dust particles enter into the subsequent handling, boiler trouble, the problem of explosion that the deposit leads to in the exhaust-heat boiler of back end with the buggy that solves prior art existence, also solve tar in the tail gas simultaneously, the problem that the buggy condenses and block up the pipeline in the pipeline.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, this patent is further described in detail with reference to the accompanying drawings and specific examples.

Referring to fig. 1 to 3, the utility model relates to a tail gas treatment furnace containing tar and coal dust, which comprises a furnace body 1, a heat accumulator 2, a venturi channel 21, a combustion-supporting gas pipeline 3, a burner 4 and a tail gas straight channel 22.

Specifically, the furnace body 1 is a kettle type structure with an air tightness inner cavity arranged inside, and the heat accumulator 2 is fixedly connected to the middle of the inner cavity and divides the inner cavity into an air collection chamber 11 and a temperature mixing chamber 12. And an air inlet pipeline 5 and an air outlet pipeline 6 which are respectively communicated with the air collecting chamber 11 and the mixing chamber 12 and are used for inputting and discharging the carbonization tail gas are arranged at two ends of the furnace body 1.

The gas inlet pipe 5 is connected with the carbonization furnace of the previous process to lead carbonized tail gas into the gas collection chamber 11, and the gas outlet pipe 6 is connected with the incinerator of the next process to lead high-temperature carbonized tail gas mixed in the temperature mixing chamber 12 into the incinerator.

Specifically, a plurality of the venturi-type channels 21 are all opened on the heat accumulator 2 in a penetrating manner, and are used for guiding part of the carbonized tail gas in the gas collection chamber 11 into the temperature mixing chamber 12 through the heat accumulator 2.

Specifically, the number of the combustion-supporting gas pipes 3 is the same as that of the venturi-type channels 21, and the combustion-supporting gas pipes are all fixedly connected to one end of the gas collection chamber 11 of the furnace body 1, and one ends of the combustion-supporting gas pipes 3 respectively extend to the throat 211 of the venturi-type channels 21 through the gas collection chamber 11, and are used for introducing combustion-supporting gas into the venturi-type channels 21.

Specifically, the quantity of combustor 4 is unanimous with venturi type passageway 21's quantity, and all fixed connection is on the lateral wall of stove body 1, and combustor 4 corresponds through heat accumulator 2 respectively and extends venturi type passageway 21 department for heating heat accumulator 2 and passing through combustion-supporting gas oxidation venturi type passageway 21 in tar and buggy in the carbonization tail gas.

Specifically, a plurality of the straight exhaust gas passages 22 are all arranged on the heat accumulator 2 in a penetrating manner and are uniformly distributed around the venturi passage 21, and are used for guiding the rest of the carbonized exhaust gas in the gas collection chamber 11 into the temperature mixing chamber 12 through the heat accumulator 2.

In actual use, the burner 4 is first turned on, the heat storage body 2 is heated to a predetermined temperature by the flame jetted from the flame jet 41 (see fig. 2), and then the burner 4 is turned off. Then, combustible carbonized tail gas containing tar and coal dust generated in the carbonization furnace is introduced into the gas collection chamber 11 through the gas inlet pipe 5, and simultaneously, externally-connected combustion-supporting gas is directly introduced into a throat 211 (shown in fig. 3) of the venturi-type channel 21 through the combustion-supporting gas pipe 3 passing through the gas collection chamber 11.

When the combustion-supporting gas passes through the throat 211 with the minimum inner diameter of the venturi channel 21 at a high speed, a certain negative pressure is formed at the inlet of the throat to accelerate the absorption of part of the combustible carbonized tail gas in the gas collection chamber 11 into the venturi channel 21, the absorbed carbonized tail gas and the introduced combustion-supporting gas are fully mixed under the flow guiding action of the venturi channel 21, and the combustion-supporting gas and tar and coal powder in the carbonized tail gas are promoted to carry out oxidation reaction under the high-temperature action of the heat accumulator 2 heated to the specified temperature, so that the tar and coal powder in the carbonized tail gas absorbed into the venturi channel 21 are oxidized and removed, and the content of the tar and the coal powder in the carbonized tail gas entering the mixing chamber 12 is greatly reduced.

Meanwhile, part of the heat generated in the process of oxidizing the tar and the coal dust by the combustion-supporting gas continuously heats the heat accumulator 2 to promote the oxidation reaction, and the other part of the heat is guided into the mixing chamber 12 along with the carbonization tail gas through the bottom of the Venturi-type channel 21 to provide additional heat energy for the carbonization tail gas.

In addition, the rest combustible carbonized tail gas in the gas collection chamber 11 enters the mixing chamber 12 through the tail gas straight channels 22 uniformly distributed around the Venturi type channels 21 and is mixed with the carbonized tail gas which is subjected to oxidation treatment and discharged through the Venturi type channels 21. The rest of the carbonized tail gas is heated by the heat accumulator 2 in the process of passing through the tail gas straight channel 22, and after entering the mixing chamber 12 and being mixed with the high-temperature tail gas discharged from the Venturi type channel 21, the mixed tail gas is further heated and heated, so that the temperature of the mixed carbonized tail gas discharged from the gas outlet pipeline 6 is obviously higher than that of the carbonized tail gas entering the gas collection chamber 11.

Via the utility model discloses its temperature of carbonization tail gas in leading-in incinerator of the pipeline of giving vent to anger 6 of handling the stove is higher than the carbonization tail gas temperature of input incinerator among the prior art, and the content of tar wherein and buggy is also showing and is reducing.

After the technical scheme is adopted, the utility model discloses the treatment furnace has following beneficial effect.

At first, the utility model discloses the tar and the buggy of the leading-in combustion-supporting gas of treatment furnace accessible combustion-supporting gas conduit 3 in with the carbonization tail gas in the venturi type passageway 21 carry out oxidation treatment, thereby partial tar and buggy wherein are oxidized by the incinerator front oxidation of leading-in back end process in carbonization tail gas, the quantity that has showing the dust granule that gets into in the back end process, the deposit of buggy in the back end exhaust-heat boiler has been avoided, prevent the boiler trouble because of the coal dust deposit leads to, the emergence of unusual accidents such as explosion, the security that carbonization tail gas handled has been improved, reliability.

Additionally, the utility model discloses the heat that handles stove accessible venturi type passageway 21 utilized carbonization tail gas tar in combustion-supporting gas and the passageway, buggy oxidation reaction produced continues to heat accumulator 2, can also improve carbonization tail gas's in the direct passageway 22 of tail gas heat accumulator when promoting oxidation reaction heat, and combine the heat that heat accumulator 2 own temperature and oxidation reaction produced to continue to heat the carbonization tail gas of mixing in the temperature mixing room 12, thereby improve the temperature of the carbonization tail gas of giving vent to anger 6 exhaust of pipeline, effectively solved because of the low tar that leads to of carbonization tail gas temperature, the problem of the pipe blockage that the buggy gathers and arouse in the pipeline, the continuity and the reliability of carbonization tail gas treatment have been guaranteed.

The technical solution of the present invention for solving the technical problems of the present invention is further improved, and the present invention further includes the following technical features.

Further, refer to fig. 1 to 3 and show, stove body 1 be vertical structure, heat accumulator 2 axial fixity connects on the middle part position of stove body 1 inner chamber, plenum chamber 11 be in the upper end of stove body 1 inner chamber mix greenhouse 12 be located the lower extreme of stove body 1 inner chamber, venturi type passageway 21 and the straight way 22 of tail gas all vertical equipartition on heat accumulator 2.

Preferably, the number of the venturi-type passages 21 is set to three, and the three passages are uniformly distributed on the heat accumulator 2 centering on the axis of the furnace body 1, and the straight exhaust gas passages 22 are uniformly distributed around the venturi-type passages 21.

The utility model discloses the processing furnace sets up to vertical structure, is favorable to the carbonization tail gas oxidation product (being the lime-ash) in the venturi type passageway 21 to subside downwards, prevents that the lime-ash from attaching on the inner wall of venturi type passageway 21 and retarding the circulation of tail gas.

Further, referring to fig. 2 and 3, the treatment furnace of the present invention further includes a waste collection chamber 13 and a waste discharge port 14.

Specifically, the waste collecting chamber 13 is disposed at the lower end of the mixing chamber 12, is communicated with the mixing chamber, and has a funnel-type structure, and is used for collecting oxidation products (i.e., ash) settled in the mixing chamber 12.

Specifically, the waste discharge port 14 is arranged at the bottom of the furnace body 1 and communicated with the waste collection chamber 13, and is used for discharging collected ash.

Preferably, as shown in fig. 1 to 3, a detachable waste discharge cover plate 15 is fixedly connected to the waste discharge port 14 through screw threads in a sealing manner, and in actual use, the waste discharge cover plate 15 is plugged on the waste discharge port 14 to ensure the air tightness of the inner cavity of the furnace body 1. After the device is used for a period of time, when enough oxidation products (namely ash slag) settled in the waste collection chamber 13 are available, the waste discharge cover plate 15 can be detached and the ash slag collected in the waste collection chamber 13 can be leaked, so that the device is simple in structure, convenient to discharge and convenient to maintain in the later period.

The embodiment is only an example of a specific structure equipped with the waste cover 15, and in other embodiments, the waste discharge port 14 may be similarly equipped with a waste valve and perform manual waste discharge or automatic waste discharge.

Further, referring to fig. 3, the venturi channel 21 of the treatment furnace of the present invention comprises a contraction section 212, a throat 211 and a diffusion section 213, wherein the contraction section 212 is connected to the collection chamber 11, the diffusion section 213 is connected to the mixing chamber 12, and the throat 211 is close to one side of the contraction section 212.

The structure of the Venturi type channel 21 has excellent flow guiding and stabilizing effects on the entering fluid, the combustion-supporting gas entering through the combustion-supporting gas pipeline 3 can form negative pressure at the throat 211 and promote the carbonized tail gas in the gas collection chamber 11 to flow into the diffusion section 213 through the contraction section 212 in an accelerated manner, and the sucked carbonized tail gas and the introduced combustion-supporting gas are fully mixed by utilizing the diffusion section 213, so that the oxidation removal effect of tar and coal dust in the carbonized tail gas is ensured. And simultaneously, the utility model discloses venturi channel 21's throat 211 is compared and is close to contraction section 212 more in diffuser 213, and the abundant degree of mixing between carbonization tail gas and combustion-supporting gas in venturi channel 21 has further been guaranteed to the relative length of this kind of structural design multiplicable diffuser 213.

Further, as shown in fig. 2, the utility model discloses handle the stove combustion-supporting gas pipeline 3 all be through tubular structure, vertical alternate fixed connection is at the top of stove body 1 respectively, and outside combustion-supporting gas pipeline 3's upper end was in stove body 1 top, its tip was equipped with the first connecting flange 31 that is used for inserting outside combustion-supporting gas source pipeline. The lower end of the combustion-supporting gas pipe 3 downwards penetrates through the gas collection chamber 11 and the contraction section 212 and axially extends to the throat 211 of the Venturi-type channel 21 in a one-to-one correspondence manner, and the end parts of the combustion-supporting gas pipe 3 extending to the throat 211 are all in a tip structure which is contracted and gathered.

The utility model discloses the 3 lower extremes of combustion-supporting trachea way of handling the stove correspond the axial respectively and extend venturi type passageway 21's throat 211 department, and its tip formula structural design of lower extreme guarantees that it can not block up venturi type passageway 21's throat 211, and this kind of structural design does benefit to the suction of carbonization tail gas in the collection chamber 11, avoids 3 lower extremes of combustion-supporting trachea way to block up constriction section 212 and throat 211.

Preferably, as shown in fig. 2 to 3, the number of the burners 4 of the treating furnace of the present invention is three in accordance with the number of the venturi-type passages 21, which belongs to one of the nozzle-type pulverized coal burners, including the flame nozzle 41 horizontally disposed, the tail end of the flame nozzle 41 is provided with the automatic ignition control device 42, the lower portion is connected with the mixing pressure regulating device 43, the bottom of the mixing pressure regulating device 43 is connected with the gas joint 44 and the oxygen joint 45, and the flame nozzle 41 is radially and fixedly connected with a second connecting flange 46.

Further, referring to fig. 1 to 2, the burner 4 of the treatment furnace of the present invention is detachably fixed to be inserted into the sidewall of the furnace body 1, and one end of the flame spraying pipe 41 of the burner 4 is respectively passed through the heat storage body 2 and radially extends to the diffusion section 213 at the middle of the venturi channel 21 in a one-to-one manner.

Preferably, as shown in fig. 2 and 3, the utility model discloses set up the first fixed orifices 16 that three respectively radial correspondence is in the three venturi type passageway 21 outside on the lateral wall of furnace body 1, correspond on the heat accumulator 2 the level be equipped with three both ends respectively with the first fixed orifices 23 of first fixed orifices 16 and venturi type passageway 21 intercommunication, radial fixedly connected with three on the lateral wall of furnace body 1 insert the combustor solid fixed cylinder 17 to venturi type passageway 21 department through first fixed orifices 16 and first fixed orifices 23 respectively, the tip that every combustor solid fixed cylinder 17 is located furnace body 1 is all set firmly a third flange 171.

During actual assembly, the flame nozzle 41 of the burner 4 is detachably fixed and inserted in the burner fixing cylinder 17 through the second connecting flange 46 and the third connecting flange 171, and is externally connected with gas through the gas joint 44 and with oxygen through the oxygen joint 45. In actual use, the gas and the oxygen are introduced into the flame nozzle 41 at a certain ratio and pressure by the mixing and pressure regulating device 43, the mixture is ignited by the automatic ignition control device 42, and the flame is ejected into the venturi-type passage 21 through the end of the flame nozzle 41 to heat the heat storage body 2.

The utility model discloses the treatment furnace is connected 4 detachably of combustor on the lateral wall of stove body 1 to make the flame spray tube 41 radial connection of combustor 4 to venturi type passageway 21 department, can make things convenient for the dimension of later stage combustor 4 to protect, and be favorable to the even heating of heat accumulator 2, and discharge in usable venturi type passageway 21 leads to the leading-in temperature mixing chamber 12 of lime-ash that produces burning and the collection waste chamber 13.

Further, referring to fig. 2 and 3, the treatment furnace of the present invention further comprises a service man 18 and a man cover 19.

Specifically, the overhaul port 18 is arranged at the upper end of the furnace body 1 and communicated with the gas collection chamber 11, the port cover 19 is fixedly installed on the overhaul port 18 in a threaded sealing manner through a screw rod in an openable and closable manner so as to seal the gas collection chamber 11, and the combustion-supporting gas pipeline 3 is fixedly arranged on the body of the port cover 19 in a penetrating manner.

The utility model discloses the population lid 19 and the maintenance population 18 that the treatment furnace set up can conveniently maintain the personnel and get into and dredge and later stage maintenance and maintenance to venturi type passageway 21 and the straight passageway 22 on the heat accumulator 2, simple structure, convenient to use, the maintenance of being convenient for. And simultaneously, the utility model discloses the treatment furnace sets up combustion-supporting gas pipeline 3 on open closed flap 19, and the convenience is adjusted combustion-supporting gas pipeline 3 well with venturi type passageway 21 well, also is favorable to later stage to the maintenance and the dimension of combustion-supporting gas pipeline 3.

Further, referring to fig. 2 and 3, the first exhaust gas passage 22 of the treatment furnace of the present invention is a cylindrical passage, and the inner diameter and the number of the passages are determined based on the exhaust gas throughput in unit time being greater than the exhaust gas throughput of the venturi passage 21.

The straight tail gas passage 22 is designed to be a cylindrical passage, which is beneficial to the passage of the carbonized tail gas and can improve the overall structural strength of the heat accumulator 2. The inner diameter and the arrangement quantity of the tail gas straight channel 22 can ensure that the throughput of the carbonized tail gas in the tail gas straight channel 22 in unit time is always larger than that of the carbonized tail gas in the Venturi type channel 21, so that the removal amount of tar and coal dust in the carbonized tail gas is controlled, and the problems of incomplete combustion of the coal dust in a subsequent incinerator, pipeline blockage and the like caused by insufficient removal amount are prevented. Meanwhile, the problem of insufficient content of combustible gas in a subsequent incinerator caused by excessive removal amount can be prevented.

Furthermore, the venturi channel 21 and the tail gas straight channel 22 of the treatment furnace of the present invention are made of the heat accumulator 2 by die casting or extrusion molding.

Preferably, the heat storage body 2 is made of a refractory, high-strength ceramic heat storage body 2.

The utility model discloses the venturi type passageway 21 and the straight passageway 22 of tail gas of treating the stove are all made by the material of heat accumulator 2 through die-casting or crowded notes shaping, not only can guarantee the structural strength of heat accumulator 2, can also improve the heating efficiency of heat accumulator 2.

The above examples are merely for clarity of description of specific embodiments of the present invention and are not intended to limit the embodiments of the present invention. For those skilled in the art, it can be deduced that other adjustments or changes to the furnace body 1, the heat accumulator 2, the venturi channel 21, the combustion-supporting gas pipeline 3, the burner 4, the tail gas straight channel 22, the waste collecting chamber 13, the waste discharging port 14, the waste discharging cover plate 15, the waste discharging valve, the overhaul population 18, the manhole cover 19 and the like are not listed. Any modification, replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The tail gas treatment furnace containing the tar coal dust is characterized by comprising:

the furnace comprises a furnace body (1), wherein a heat accumulator (2) for dividing an inner cavity of the furnace body into a gas collection chamber (11) and a mixed-temperature chamber (12) is arranged in the furnace body, and an air inlet pipeline (5) and an air outlet pipeline (6) which are respectively communicated with the gas collection chamber (11) and the mixed-temperature chamber (12) and are used for inputting and discharging carbonization tail gas are arranged at two ends of the furnace body;

a plurality of Venturi type channels (21) which are arranged on the heat accumulator (2) in a penetrating way and are used for guiding part of the carbonized tail gas in the gas collection chamber (11) into the temperature mixing chamber (12) through the heat accumulator (2);

the combustion-supporting gas pipelines (3) are arranged on the furnace body (1), respectively extend to the throat (211) of the Venturi channel (21) through gas collection chambers (11) correspondingly and are used for introducing combustion-supporting gas;

the burners (4) are arranged on the furnace body (1), respectively extend to the Venturi type channel (21) through the heat accumulator (2) correspondingly, and are used for heating the heat accumulator (2) and oxidizing tar and coal powder in carbonized tail gas in the Venturi type channel (21) through the combustion-supporting gas;

and the tail gas straight channels (22) are penetratingly arranged on the heat accumulator (2) and are uniformly distributed around the Venturi type channel (21) and are used for guiding the rest carbonized tail gas in the gas collection chamber (11) into the temperature mixing chamber (12) through the heat accumulator (2).

2. The tail gas treatment furnace containing the tar and the coal dust as claimed in claim 1, wherein the furnace body (1) is of a vertical structure, the gas collection chamber (11) is arranged at the upper end of the inner cavity of the furnace body, the gas mixing chamber (12) is arranged at the lower end of the inner cavity of the furnace body, and the Venturi-type channel (21) and the tail gas straight channel (22) are vertically and evenly distributed on the heat accumulator (2).

3. The tail gas treatment furnace containing the tar coal dust according to claim 2, characterized by further comprising:

the waste collecting chamber (13) is arranged at the lower end of the mixing chamber (12), is communicated with the mixing chamber, has a funnel-type structure and is used for collecting settled ash in the mixing chamber (12);

and the waste discharge port (14) is arranged at the bottom of the furnace body (1), is communicated with the waste collection chamber (13) and is used for leaking collected ash.

4. The tail gas treatment furnace containing the tar coal powder according to claim 3, characterized in that the waste discharge opening (14) is provided with a waste discharge cover plate (15) or a waste discharge valve which can be opened and closed.

5. The tail gas treatment furnace containing the tar coal powder according to claim 1, characterized in that the venturi-type channel (21) comprises a contraction section (212), a throat (211) and a diffusion section (213), the contraction section (212) is communicated to the gas collection chamber (11), the diffusion section (213) is communicated to the gas mixing chamber (12), and the throat (211) is close to one side of the contraction section (212).

6. The tail gas treatment furnace containing the tar coal powder as claimed in claim 5, wherein the combustion-supporting gas pipe (3) axially extends to the throat (211) through the collection chamber (11) and the contraction section (212) in a one-to-one correspondence manner, and the end of the combustion-supporting gas pipe extending to the throat (211) is in a tip structure of contraction and convergence.

7. The tail gas treatment furnace containing the tar and the coal dust according to claim 5, characterized in that the burner (4) is detachably connected to the side wall of the furnace body (1) and radially extends to the diffuser (213) in the middle of the Venturi type channel (21) through the heat storage body (2) in a one-to-one correspondence manner.

8. The tail gas treatment furnace containing the tar coal dust according to claim 1, characterized by further comprising:

the overhaul population (18) is arranged at one end of the furnace body (1) and is communicated with the gas collection chamber (11);

and the human mouth cover (19) is arranged on the overhaul population (18) in an openable and closable manner so as to seal the gas collecting chamber (11), and the combustion-supporting gas pipeline (3) is fixedly arranged on the body in a penetrating manner.

9. The tail gas treatment furnace containing the tar coal powder according to claim 1, wherein the tail gas straight passage (22) is a cylindrical passage, and the inner diameter and the number of the cylindrical passage are determined based on that the tail gas throughput in unit time is larger than that of the Venturi passage (21).

10. The tail gas treatment furnace containing tar and coal dust according to claim 1, characterized in that the Venturi channel (21) and the tail gas straight channel (22) are made of the heat accumulator (2) by die casting or extrusion molding.

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