JP2016084988A - Dust collector and carbonization type incineration system with dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To resolve some problems found in the prior art that members of a shipping mechanism, in particular, a screw conveyor or the like is elongated or retracted to cause each of the members to be damaged or irregular noise to be generated due to friction between the members or powder agents to be ignited by friction heat or firing to be extended due to pouring oil for reducing friction because a hopper part of a dust collector is kept at a high temperature so as not to cause soot dusts or powder agents to become deliquescence state by solidification or condensation of the soot dusts due to cooling down of the soot dusts.SOLUTION: A shipping mechanism 29 comprises a screw conveyor 38 for receiving soot dusts and transferring them to a discharging port 14e1; and an operating part 44 comprised of a first bearing 39 and a second bearing 40 for operably supporting the screw conveyor. Further, there is provided a slide mechanism 42 capable of eliminating a displacement difference caused by thermal extension or shrinkage between a left frame 46 and an operating part 44 between the left frame 46 at a casing 14 to which the first bearing 39 that is at least a part of the operating part 44 is fixed and the operating part 44.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a dust collector for filtering and collecting exhaust gas generated by processing combustible waste such as waste tires, plastics, medical waste, and wood scraps, and a dry distillation incineration system including the dust collector.

  In recent years, with regard to the treatment of organic waste such as waste tires, for example, from the viewpoint of the environment, development of a treatment technology that can be used safely and safely and energy can be made remarkable. With regard to such technology, conventionally, organic waste is carbonized to generate pyrolysis gas, and the pyrolysis gas is combusted. The combustion heat at that time is used to dry waste such as livestock manure and shredder dust. An incineration system used for carbonization / incineration is known (for example, see Patent Document 1). In addition, an incineration system that burns waste and collects dust in exhaust gas generated at that time by a dust collector such as a bag filter and removes the dust is also known (see, for example, Patent Document 2).

  In any incineration system, the dust in the exhaust gas generated by combustion is filtered and then collected and stored in a hopper section below the filtration mechanism, and is discharged by a carry-out mechanism having a screw conveyor or the like in the hopper section. It is transferred to the outlet and discharged from the outlet to the outside of the dust collector.

Japanese Patent No. 5390723 JP 2003-80018 A

  However, in the incineration system as described above, the dust that is temporarily stored in the hopper of the dust collector cools and solidifies, or due to condensation caused by water vapor in the exhaust gas, slaked lime, activated carbon, etc. for removing harmful substances In order to prevent liquefaction of powdery desulfurizing agent, adsorbent (hereinafter referred to as “powder”) and soot and dust, the exhaust gas is introduced into the dust collector at as high a temperature as possible. The hopper is forcibly heated by a heater.

  Here, the attached portion for attaching a screw conveyor, a bearing or the like (hereinafter referred to as “operation portion”) that actually carries out the dust discharge operation in the carry-out mechanism is on the casing side that occupies most of the dust collector. Since it is connected and it is hard to move and heat also escapes easily, it is hard to expand and contract compared with the said operation | movement part. For this reason, when the composition, flow rate, flow rate, temperature, etc. of the exhaust gas that passes through the dust collector and the set temperature of the heater change greatly, there is a large difference in the amount of displacement of the operating part and attached part due to thermal expansion and contraction. Then, the operating part is thermally expanded and contracted in a state where it is restrained by the attached part.

  As a result, a large stress is generated inside the operation unit, and the transfer member such as a screw conveyor constituting the operation unit and the support member such as a bearing supporting the rotating shaft of the screw conveyor are damaged, or between the two members. There is a problem that abnormal noise is generated due to friction, the powder is ignited by frictional heat, or ignition is promoted by lubrication for reducing friction.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
That is, according to a first aspect of the present invention, the casing includes a filter part that collects the dust in the exhaust gas and a hopper part that stores the dust from the filter part, and the dust is transferred to a lower part of the hopper part. In the dust collector in which a carry-out mechanism for discharging to the outside of the casing is arranged, the carry-out mechanism includes a transfer member that receives the dust and transfers it to a discharge port, and a support member that operably supports the transfer member. A displacement difference due to thermal expansion and contraction between the mounted portion and the operating portion between the operating portion and the mounted portion on the casing side to which at least a part of the operating portion is attached. A displacement difference absorbing mechanism that can be eliminated is provided.
According to a second aspect of the present invention, the displacement difference absorbing mechanism includes a guide member that extends from the attached portion in the heat expansion / contraction direction, and a slide member that slides on the guide member in the heat expansion / contraction direction. The member is connected to the support member of the operating portion.
According to a third aspect of the present invention, the slide member is formed with a communication hole from the outer surface opposite to the support member to the guide member, and a plug member for filling grease is provided at the open end of the communication hole.
In Claim 4, The said transfer member is a screw conveyor, Comprising: This screw conveyor is equipped with a rotating shaft and the rotary blade attached to this rotary shaft, and extruding and transferring the said dust in an axial direction, This rotary blade Is formed in the opposite direction across the portion above the opening of the discharge port by the rotating shaft.
According to a fifth aspect of the present invention, an air passage cover having a halved pipe structure opened downward is provided above the transfer member in the hopper so that one end of the air passage cover is connected to the exhaust gas inlet. Is to be placed.
According to a sixth aspect of the present invention, a plurality of baffle plates that obstruct the flow of exhaust gas from the inflow port are suspended from the inner wall surface of the air path cover, and the baffle plates are suspended depending on the distance from the inflow port. Will increase.
In Claim 7, it is a dry distillation type incineration system provided with the said dust collector, Comprising: The dry distillation incinerator which carbonizes combustible waste, The gas processing apparatus which burns the pyrolysis gas produced in this dry distillation incinerator And a cooling tower that cools the exhaust gas generated in the gas treatment device, and a chimney that discharges the exhaust gas cooled by the cooling tower and made harmless by the dust collector to the atmosphere.

Since this invention was comprised as mentioned above, there exists an effect shown below.
That is, according to claim 1, even if the composition, flow rate, flow velocity, temperature, etc. of the exhaust gas passing through the dust collector and the set temperature of the heater for heating provided in the hopper are changed, Even if there is a large difference in each displacement amount, both the operating part and the mounted part can be freely thermally expanded and contracted, and no large stress is generated in the interior. Damage to support members such as the transfer member and the bearing that supports the rotating shaft of the screw conveyor, generation of noise due to friction between both members, ignition of powder due to frictional heat, ignition due to lubrication to reduce friction Promotion can be reliably prevented.
According to the second aspect of the present invention, the displacement difference between the respective portions can be reliably eliminated by the simple configuration in which the operating portion is moved on the guide member together with the slide member in the direction of thermal expansion and contraction. The structure can be simplified, and the cost of parts can be reduced and the maintainability can be improved.
According to claim 3, replenishment of the grease to the sliding gap between the guide member and the slide member can be performed from the side where the support member is not connected by the slide member via a plug member such as a grease nipple. It is possible to improve the workability of grease replenishment work.
According to the fourth aspect of the present invention, the dust can be transferred from the entire length range of the rotary shaft toward the discharge port opened at an arbitrary position below the rotary shaft only by rotating the single rotary shaft. The degree of freedom in designing the outlet can be increased. In particular, when a shaft driving device is arranged at one end of the rotating shaft and a displacement difference absorbing mechanism is provided at the other end, the discharge port is opened directly below the central portion in the axial direction of the rotating shaft. A rotary valve and a storage container can be connected to the discharge port without interfering with the displacement difference absorbing mechanism, and a large work space can be secured to improve the workability of the dust discharge operation.
According to claim 5, the laminar flow of the exhaust gas and the powder agent flowing into the air channel cover from the inflow port can be promoted, and the wind pressure can be reduced, and the air cleaner of the filter unit can be directly blown by the exhaust gas and the powder agent. It is possible to prevent the slaked lime from being shaken violently, and to stably attach slaked lime to the filter cloth of the air cleaner, and to prevent the slaked lime already attached to the filter cloth from falling off. Furthermore, once the dust falling from the filter part is received by the curved surface on the air passage cover, the curved surface can be slid and slowly dropped onto the transfer member. It can be directly dropped and prevented from adhering to the transfer member due to an impact at the time of dropping, and the dust transfer efficiency can be improved.
According to claim 6, the exhaust gas introduced from the inflow port or the powder agent blown together with the exhaust gas is applied to the baffle plate and scattered to the left and right in the axial direction, along the side wall of the hopper portion from the lower opening of the air passage cover The exhaust gas and the powder agent can be made to flow uniformly into the filter part, and the processing effect of filtering and collecting dust and removing harmful substances can be enhanced. In particular, as the distance from the inflow port increases, the hanging length of the baffle plate is increased, and the reduction in the amount of flue gas or powder scattered while passing through the air passage cover can be reduced. It is possible to further improve the uniform inflow property to the.
According to the seventh aspect, the waste to be treated does not need to be pretreated, and even if it is a waste having a relatively large outer dimension such as a waste tire, it is thrown in from the inlet of the dry distillation incinerator as it is. Therefore, the waste can be processed efficiently. Further, according to the dry distillation incinerator, a combustible gas that can be easily burned is obtained as a pyrolysis gas, and the residual ash can be minimized and the ash can be reused or discarded as it is. In addition, since the recovered combustible gas can be easily controlled for combustion, it can be automatically burned without risk of explosion, and excellent safety can be obtained. Furthermore, the exhaust gas generated by the gas treatment device is filtered and cleaned with slaked lime or activated carbon in a dust collector, and is cleaned and rendered harmless, so no post-treatment is required except for special waste treatment. can do. In addition, since the high-temperature exhaust gas can be used for many applications such as steam generation, heating, and drying, for example, energy saving and efficiency improvement as a whole system of the dry distillation incineration system can be achieved. Furthermore, since the process and the device configuration of each device included in the dry distillation incineration system are simple, the operation, maintenance, inspection, etc. can be performed safely and easily, and excellent operability can be obtained.

It is a top view which shows the whole structure of the dry distillation type incineration system concerning this invention. It is a side view similarly. It is a front view which shows the whole structure of the bag filter concerning this invention. Similarly, it is a right side view. Similarly, it is a left side view. It is a side view which shows the structure of an air cleaner. It is a perspective view which shows the structure of a hopper part. It is a perspective view which shows the structure of a 2nd bearing periphery. It is a perspective view which shows the structure of a 1st bearing periphery. It is also a front view. It is also a plan view. Similarly, it is a left side view. It is a side view which shows another form of an air path cover.

Hereinafter, embodiments of the present invention will be described in detail.
Note that the direction indicated by the arrow F in FIG. 1 is the front of the bag filter 5 and its dry distillation incineration system 1 as the dust collector, the direction indicated by the arrow R is the right side, and the positions and directions of the members described below. Is based on this front and right.

First, the overall configuration of the dry distillation incineration system 1 according to the present invention will be described with reference to FIGS.
The dry distillation incineration system 1 generates a pyrolysis gas by dry distillation of organic waste, which is a flammable waste, and extracts active components such as flammable gas and oil from the pyrolysis gas, Heat treatment such as steam heating or drying is performed using the pyrolysis gas as a heat source. The dry distillation incineration system 1 according to the present embodiment treats various combustible organic wastes such as waste tires, plastics, medical waste, shredder dust, wood waste, general waste, waste oil, and the like. It includes a dry distillation incinerator 2, a gas processing device 3, a cooling tower 4, the bag filter 5, and a chimney 6.

  Among these, the dry distillation incinerator 2 is a structure for carrying out dry distillation of organic wastes, such as a waste tire, and has a combustion space which burns (primary combustion) this organic waste. Then, the organic waste is introduced into the combustion space from the upper side and is primarily burned. At that time, the organic waste is ignited and then spontaneously suppressed due to lack of oxygen, that is, low in the combustion space. Heated in an oxygen state, the pyrolysis reaction proceeds to produce a combustible pyrolysis gas, and ash (combustion ash) is produced as a residue. As shown in FIG. 1, the dry distillation incineration system 1 of the present embodiment includes two dry distillation incinerators 2 arranged side by side in the left-right direction.

  The gas treatment device 3 is configured to burn the pyrolysis gas generated in the dry distillation incinerator 2 and has a combustion chamber that is relatively hot relative to the combustion temperature in the dry distillation incinerator 2. Between the gas treatment device 3 and the dry distillation incinerator 2, a gas introduction path portion 8 for guiding the pyrolysis gas generated in the dry distillation incinerator 2 to the gas treatment device 3 is provided.

  The gas introduction path portion 8 communicates with the combustion space of the dry distillation incinerator 2 and guides the pyrolysis gas generated in the combustion space to the gas processing device 3. The gas introduction path portion 8 communicates with the combustion space of the dry distillation incinerator 2 and extends from the dry distillation incinerator 2, and the downstream side of the gas conduit 9 (on the gas processing device 3 side). And a secondary combustion burner 76 provided in

  Then, the pyrolysis gas generated in the dry distillation incinerator 2 is taken out from the combustion space of the dry distillation incinerator 2 through the gas conduit 9 and then completely burned by the secondary combustion burner 76 to be in the gas processing device 3. To be blown into. At this time, the heat generated by the combustion of the pyrolysis gas by the secondary combustion burner 76 is used, for example, for drying, carbonization, and incineration of organic, inorganic and sludge waste such as livestock manure and shredder dust. By the combustion of this pyrolysis gas, dioxins are pyrolyzed, and the generation of dioxins is reduced. In addition, the combustion temperature in the gas processing apparatus 3 is 900-1600 degreeC, for example.

  The cooling tower 4 is configured to cool the exhaust gas generated in the gas processing device 3 and receives the supply of the exhaust gas from the gas processing device 3 to reduce the temperature of the exhaust gas with cooling water or the like. is there. Due to the cooling action of the exhaust gas by the cooling tower 4, the above-mentioned resynthesis (de novo synthesis) of dioxins is suppressed. In the cooling tower 4, the temperature of the exhaust gas is lowered to a temperature of 200 ° C. or less, for example.

  The bag filter 5 is a dust collecting device having a configuration for filtering and collecting the exhaust gas cooled by the cooling tower 4 and obtains clean and harmless exhaust gas. In the bag filter 5, as shown in FIG. 3, many air cleaners 10 having a filtering function (for example, 250 to 300) are arranged in parallel in the horizontal direction to form an air cleaner group 11. After the exhaust gas cooled by the cooling tower 4 flows from the lower part of the bag filter 5, the dust is filtered and collected while passing through the air cleaner group 11, and then flows out from the upper part of the bag filter 5. To do.

  Between the bag filter 5 and the cooling tower 4, an exhaust gas passage 12 for guiding the exhaust gas cooled by the cooling tower 4 to the bag filter 5 is provided. The exhaust gas passage 12 communicates with the cooling space of the cooling tower 4 and guides the exhaust gas generated in the cooling space to the bag filter 5.

  The chimney portion 6 is configured to discharge the exhaust gas detoxified by the bag filter 5 to the atmosphere, and the detoxified exhaust gas is guided to the lower part of the chimney portion 6 through the exhaust gas passage 13. , And discharged from the upper end opening of the chimney 6 into the atmosphere.

  Further, the dry distillation incineration system 1 having the above-described configuration is provided with a powder agent supply device 7 for supplying a powder agent for removing harmful substances to the exhaust gas discharged from the cooling tower 4. ing. In the powder agent supply device 7, the powder agent is injected and supplied to the exhaust gas passing through the exhaust gas passage 12, which is the flue before the bag filter 5, and HCl in the exhaust gas in the exhaust gas passage 12 is supplied. SOx is absorbed and neutralized to stably remove dioxins and heavy metals. As described above, the configuration in which the powder agent is not limited to the supply to the exhaust gas passage 12 but a configuration in which the powder agent is directly supplied into the cooling tower 4 or the bag filter 5 may be adopted.

Next, a detailed configuration of the bug filter 5 will be described with reference to FIGS. 3 to 7 and FIG.
As shown in FIG. 3 to FIG. 5, in the bag filter 5, the casing 14 has a rectangular box shape at the top, and a funnel shape with a narrower front and rear width at the lower portion. The upper space 17 and the lower space 16 are divided by a horizontal plate-like partition wall 15.

  In the lower space 16, an exhaust gas inlet 14 a 1 is opened in the lower right wall 14 a of the casing 14, and the left end of the inflow pipe 18 is inserted and fixed to the inflow port 14 a 1. The right end communicates with the exhaust gas passage 12 from the cooling tower 4. Thereby, the exhaust gas from the cooling tower 4 is introduced into the lower space 16 of the bag filter 5 through the exhaust gas passage 12, the inflow pipe 18, and the inflow port 14 a 1.

  On the other hand, in the upper space 17, an exhaust gas outlet 14 b 1 is opened in the upper left side wall 14 b of the casing 14, and the right end of the discharge pipe 19 is inserted and fixed to the outlet 14 b 1. The exhaust gas passage 13 is connected to the chimney 6. Thereby, the exhaust gas flowing into the upper space 17 from the lower space 16 passes through the outlet 14b1, the discharge pipe 19, and the exhaust gas passage 13, and is discharged to the chimney 6.

  A filter portion 16a for filtering and collecting the dust in the introduced exhaust gas is formed in the rectangular box-shaped portion above the lower space 16, and a funnel shape is formed below the filter portion 16a. In the portion, a hopper portion 16b for receiving and storing the dust collected by the filter portion 16a is formed. In addition, inspection windows 77 and 77 and inspection windows 78 and 79 through which the inside of the bag filter 5 can be observed are opened in the casings 14 of the filter portion 16a and the hopper portion 16b, respectively.

  The air cleaner group 11 is disposed in the filter portion 16a. As shown in FIG. 6, the air cleaner 10 constituting the air cleaner group 11 has a bottomed cylindrical shape with a top end opened and a bottom end closed, and a filter cloth 21 made of polyester-based woven fabric, felt, or the like, The retainer 20 is inserted into the cloth 21 from above to hold the filter cloth 21 in a cylindrical shape.

  The retainer 20 includes a cylindrical frame 22 formed into a cylindrical shape by combining a plurality of wires such as stainless steel wires, and a funnel-shaped mounting pipe 23 in which the upper end of the frame 22 is mounted on the upper outer peripheral side surface. A substantially horizontal ring-shaped locking portion 23 a is formed on the upper end surface of the mounting pipe 23.

  In the configuration as described above, the retainer 20 with the filter cloth 21 attached is inserted from above into the mounting hole 15a drilled in the partition wall 15, and the upper end of the filter cloth 21 is inserted into the retainer 20 The upper end portion of the filter cloth 21 is hooked on the mounting hole 15a by being sandwiched between the lower surface of the outer peripheral edge portion of the locking portion 23a and the upper surface of the inner peripheral edge portion of the mounting hole 15a, so that the air cleaner 10 Can be suspended from the partition wall 15.

  As a result, the exhaust gas introduced into the lower space 16 from the cooling tower 4 flows from the outside to the inside of the filter cloth 21 of the air cleaner 10 disposed in the filter portion 16a, and is filtered by the filter cloth 21 to generate dust. Exhaust gas that has been removed and is harmless flows from the frame 22 through the attachment pipe 23 into the upper space 17 and is discharged from the outlet 14b1.

  In order to filter the dust, the filter cloth 21 is too coarse, and the filter cloth 21 alone has a small pressure loss, so that it is difficult to uniformly flow the exhaust gas into the lower space 16, so a new filter cloth 21 is used. In order to do so, the powder material supply device 7 is used to blow and adhere slaked lime powder together with the exhaust gas into the lower space 16 in advance, and the eyes of the filter cloth 21 to an appropriate degree are formed by the powder. It is packed so that it is dense.

  As shown in FIGS. 3 to 6, above the air cleaner 10, there is disposed a wiping device 24 for wiping off the thick dust layer deposited and deposited on the outer surface and inside of the filter cloth 21. Yes.

  The dropping device 24 includes a single main pipe 25 extending in the left-right direction behind the upper rear side wall 14c of the casing 14, and a plurality of the pipe-dropping devices 24 extending in front from the main pipe 25 and arranged in parallel in the left-right direction at predetermined intervals. The branch pipe 26, an injection nozzle 27 hanging downward from the middle of the branch pipe 26, a compressor (not shown), and the like. The lower end of the injection nozzle 27 is inserted into the mounting pipe 23 of the air cleaner 10 from above.

  As a result, high-pressure gas such as compressed air fed from the compressor or the like is injected into the attachment pipe 23 through the main pipe 25, the branch pipe 26 and the injection nozzle 27, and is applied to the filter cloth 21 by the high-pressure gas. The thick dust layer deposited and deposited is wiped off to the outside of the filter cloth 21, and the clogging of the filter cloth 21 can be eliminated.

  As shown in FIGS. 3, 4, and 7, the hopper portion 16b has a half-pipe structure that opens downward and has an axial center 28c in the left-right direction, and is introduced from the inlet 14a1. An air passage cover 28 for preventing the exhaust gas from directly blowing on the air cleaner 10 extends in the left-right direction. A carry-out mechanism 29, which will be described in detail later, is disposed below the air path cover 28, and the dust collected from the air cleaner 10 by the carry-out mechanism 29 is stored in the hopper portion 16b. It is transported to a discharge port 14e1 that is opened in the center in the left-right direction, and is discharged from the discharge port 14e1 to the outside of the casing 14.

  The air passage cover 28 includes an inclined portion 28a having a right end connected to the upper half of the inflow port 14a1 and inclined obliquely downward to the left, and a horizontal portion connected to the inclined portion 28a and extending substantially horizontally to the left. 28b.

  As a result, the exhaust gas flowing into the air passage cover 28 from the inlet 14a1 and the powder agent blown together with the exhaust gas are first decelerated while flowing diagonally downward to the left along the inner wall surface of the inclined portion 28a. From the lower opening 28d of the air passage cover 28 after flowing into the horizontal portion 28b. And it blows upwards along the inclined side walls 14d and 14d before and after the hopper portion 16b, and flows into the filter portion 16a.

  The exhaust gas and powder agent at this time are easier to laminate and can reduce the wind pressure compared to the conventional case where the air cleaner 10 is directly blown from the lower side without the air passage cover 28, so the exhaust gas and powder agent to be sprayed can be reduced. Therefore, the air cleaner 10 is not vigorously shaken. Therefore, the slaked lime can be stably attached to the filter cloth 21 of the air cleaner 10 as described above, and the slaked lime already attached to the filter cloth 21 can be prevented from falling off.

  In addition, the dust falling from the air cleaner 10 is once received by the upper curved surface of the air passage cover 28, and then slid on the inclined side walls 14d and 14d of the hopper portion 16b so as to be placed on the carry-out mechanism 29. It can be dropped slowly.

  Further, baffle plates 30, 31, 32 and 33 are suspended from the upper inner wall surface of the horizontal portion 28 b of the air path cover 28. Each of the baffle plates 30, 31, 32, and 33 is an arcuate plate member on a plane orthogonal to the axis 28c of the air passage cover 28, and is suspended in parallel with each other in order from the inflow port 14a1 side. Yes.

  In the baffle plates 30, 31, 32, and 33, lengths 30b, 31b, 32b, and 33b from the upper ends to the lower sides 30a, 31a, 32a, and 33a corresponding to bow-shaped strings (hereinafter referred to as “hanging length”). Is increased as the distance from the inlet 14a1 increases.

  As a result, the exhaust gas and powder from the inlet 14a1 are scattered by the baffle plates 30, 31, 32, and 33 while passing through the horizontal portion 28b, and gradually decrease. In addition, as the distance from the inflow port 14a1 increases, that is, as the passing distance is longer, the hanging length of the baffle plates 30, 31, 32, and 33 is increased to increase the collision area of the exhaust gas and the powder agent, A reduction in the amount of scattering can be reduced. For this reason, the exhaust gas and the powder agent show a uniform inflow amount distribution with respect to the filter portion 16a regardless of the position of the air passage cover 28 in the axial center direction.

  As shown in FIG. 13, the air passage cover 80 is formed by reducing the baffle plate of the air passage cover 28 or gradually raising the left and right lower edge portions of the horizontal portion 28 b away from the inflow port 14 a 1. It may be used.

  Thereby, even if the exhaust gas and the powder agent passing through the inclined portion 80a and the horizontal portion 80b from the inlet 14a1 are decelerated very much, the upward blowing is insufficient, and the exhaust gas and the powder agent are transported as they are. Even when falling down, the air path cover 80 can prevent the fall.

  That is, by reducing the baffle plates to only the baffle plates 32 and 33, the passage resistance in the air passage cover 80 is reduced, and the lower edge portions 80c and 80d are raised as the distance from the inlet 14a1 increases. The exhaust gas and the powder agent that are decelerated during the passage can be provided with a sufficient gap for blowing up, and the upward blowing can be ensured.

  In addition, a plurality of heaters 34 energized through a plurality of relay boxes 36 are attached to the outer side surfaces of the inclined side walls 14d and 14d at predetermined intervals in the axial direction of the air passage cover 28. Yes. The outer surface of the heater 34 is covered with a plate-like heat insulating material 35, and a temperature sensor 37 capable of detecting the temperature of the inclined side walls 14 d and 14 d is disposed outside the heat insulating material 35. Has been.

  As a result, the heater 34 is operated in a state of being kept warm by the heat insulating material 35, and the hopper portion 16b can be heated and held at a predetermined temperature by the temperature sensor 37, so that the dust in the hopper portion 16b is cooled. It is possible to reliably prevent liquefaction of powder and dust due to condensation caused by water vapor in solidified or cooled exhaust gas.

Next, a detailed configuration of the carry-out device 29 will be described with reference to FIGS.
As shown in FIG. 7, the carry-out device 29 includes a screw conveyor 38 that receives dust in the hopper portion 16b and transfers it to the discharge port 14e1, and left and right first bearings 39 that rotatably support the screw conveyor 38. A conveyor case 14e for attaching a second bearing 40, the screw conveyor 38, the first bearing 39, and the second bearing 40, and an operation unit 44 for actually carrying out the dust discharge operation, at the right end of the screw conveyor 38. A shaft driving device 41 that rotationally drives the screw conveyor 38 and a slide mechanism 42 that is located at the left end of the screw conveyor 38 and can eliminate a displacement difference due to thermal expansion and contraction between members are provided.

  As shown in FIGS. 7 to 9, the conveyor case 14e is a half-pipe structure having a shaft center 14e2 that opens upward and in the left-right direction, and covers the screw conveyor 38 from below. And left and right left pedestals 46 and 47 that support the first bearing 39 and the second bearing 40, respectively.

  In the case part 45, it is allowed to drop directly from the filter part 16a or to slide on the inclined side walls 14d and 14d of the hopper part 16b after once hitting the upper curved surface of the air passage cover 28. The falling dust is stored.

  Further, the discharge port 14e1 is opened substantially at the center in the left-right direction of the case portion 45, and a dust collecting and storing portion 43 is disposed below the discharge port 14e1. The dust collecting / reserving part 43 is attached to the discharge port 14e1 and has a rotary valve 48 capable of discharging dust in an airtight state, an electric motor 49 for driving the rotary valve 48, and an upper opening 50a in the rotary valve 48. It is comprised from the box-shaped storage container 50 connected via.

  Here, the rotary valve 48 is configured to accommodate a rotor 48b having a plurality of rotating blades 48b1 in a case 48a, and to rotate the rotor 48b by the electric motor 49, and to connect the discharge port 14e1. The soot and dust that have entered between the adjacent rotary blades 48b1 and 48b1 in the case 48a are continuously transferred downward in an airtight state.

  As a result, the dust that has fallen from the filter portion 16a is stored in the case portion 45, and then transferred to the discharge port 14e1 by the screw conveyor 38, and the upper opening 50a without backflow by the rotary valve 48. Can be dropped into the storage container 50, and the dust accumulated in the hopper 16b can be appropriately discharged to the outside.

  As shown in FIGS. 7 to 10, the screw conveyor 38 includes a rotary shaft 51 having a shaft center 51d parallel to the shaft center 14e2 of the conveyor case 14e, and an outer peripheral surface of the rotary shaft 51. And a spiral rotating blade 52 that pushes and moves in the direction of the heart. The rotary shaft 51 includes a large-diameter shaft portion 51a that winds the rotary blade 52 around the outer periphery, and left and right small-diameter shaft portions 51b and right small-diameter shaft portions 51c that are smaller in diameter than the large-diameter shaft portion 51a. Composed.

  Further, the rotary blade 52 is wound on the right side (the inlet 14a1 side) with the central shaft portion 51a1 located substantially in the axial center direction of the large-diameter shaft portion 51a and positioned above the discharge port 14e1. The rotary blade 52b and the rotary blade 52a wound on the left side (the side opposite to the inflow port 14a1) are arranged in opposite directions.

  In the present embodiment, when the rotating shaft 51 rotates in the direction of the arrow 53, the dust accumulated in the case portion 45 of the conveyor case 14e is moved in the right direction (inlet 14a1) indicated by the arrow 54 by the rotary blade 52a. The directions of the rotary blades 52a and 52b are set so that the rotary blades 52b are pushed leftward (opposite the inlet 14a1) by the rotary blades 52b.

  As a result, the dust can be transferred from the entire length range of the rotating shaft 51 toward the discharge port 14 e 1 at an arbitrary position below the rotating shaft 51 only by rotating the single rotating shaft 51. The shaft driving device 41 is disposed at the right end of the rotating shaft 51.

  As shown in FIG. 8, in the shaft drive device 41, an electric motor 56 is provided in front of the first bearing 40, and a drive sprocket 57 is fixed to a motor shaft 56a extending to the right of the electric motor 56. On the other hand, a driven sprocket 58 is fixed at the right end of the right small diameter shaft portion 51 c of the rotating shaft 51, and a chain 59 is wound between the driven sprocket 58 and the drive sprocket 57.

  A chain cover 60 is covered on the right side of the drive sprocket 57, the chain 59, and the driven sprocket 58. By controlling the drive of the electric motor 56, the drive sprocket 57, the chain 59, A driving force is transmitted to the right small-diameter shaft portion 51c via the driven sprocket 58, and the screw conveyor 38 is rotationally driven.

  Further, the right small-diameter shaft portion 51c is rotatably connected to the right end of the large-diameter shaft portion 51a after passing through the right side wall 45a of the case portion 45 from the right outer side, and is connected to the right-side wall 45a and the follower. The right small diameter shaft portion 51c between the sprocket 58 and the sprocket 58 is rotatably supported by the second bearing 40.

  The second bearing 40 is inserted into a fixture 62, and the fixture 62 is fastened and fixed on the right frame 47 by a bolt 61. The right frame 47 is connected to the right side wall 45a of the case portion 45. It is fixed to.

  Thereby, the 2nd bearing 40 is attached to the right stand 47 of the conveyor case 14e which is a to-be-attached part by the side of the casing 14 so that relative displacement is impossible. On the other hand, the first bearing 39 is attached to the left gantry 46 of the conveyor case 14e so as to be relatively displaceable in the direction of the axis 51d of the rotating shaft 51 through a slide mechanism 42 as described below. Yes.

  As shown in FIGS. 9 to 12, the left gantry 46 has a U-shaped frame structure opened to the right in plan view, and extends to the left from the lower front and rear ends of the left side wall 45b of the case part 45. It comprises a front frame 46a and a rear frame 46b before and after exiting, and a connecting plate 46c for connecting the left ends of the front frame 46a and the rear frame 46b.

  Between the connecting plate 46c and the left side wall 45b, front and rear front guide bars 63 and rear guide bars 64 are disposed on the rotary shaft 51 at positions on the inner side in the front and rear direction than the mounting positions of the front and rear frames 46a and 46b. Is horizontally mounted in parallel with the axial center 51d.

  On the front guide bar 63 and the rear guide bar 64, front and rear front sliders 65 and rear sliders 66 are slidably fitted on the front guide bar 63 and the rear guide bar 64, respectively. The front slider 65 and the rear slider 66 constitute a slide mechanism 42 as a displacement difference absorbing mechanism according to the present invention.

  Further, a fixing plate 67 is bridged between the upper surfaces of the front slider 65 and the rear slider 66 by a plurality of bolts 69, and a fixture 68 is fastened and fixed on the fixing plate 67 by front and rear bolts 70. The first bearing 39 is inserted into the fixture 68, whereby the first bearing 39 is connected to the front slider 65 and the rear slider 66.

  The left small diameter shaft portion 51b of the rotary shaft 51 is rotatably supported by the first bearing 39, and the left small diameter shaft portion 51b is formed through the through hole 45b1 of the left side wall 45b of the case portion 45 from the left outer side. Is rotatably connected to the left end of the large-diameter shaft portion 51a.

  As a result, the composition, flow rate, flow velocity, temperature, etc. of the hot exhaust gas flowing into the hopper 16b from the inlet 14a1 and the set temperature of the heater 34 change, and the screw conveyor 38, first bearing 39, second The first bearing 39 that supports the left end of the screw conveyor 38 even when the entire operation unit 44 expands or contracts greatly in the left-right direction due to the thermal expansion and contraction of the operation unit 44 including the bearing 40, particularly due to the thermal expansion and contraction of the long screw conveyor 38. However, it is possible to freely slide on the front guide bar 63 and the rear guide bar 64 through the front slider 65 and the rear slider 66 in the direction of the axis 51d that is the direction of thermal expansion and contraction.

  For this reason, the operation unit 44 is not restrained by the left gantry 46 of the conveyor case 14e to which the operation unit 44 is attached, and is not limited to the inside of the operation unit 44 or the left gantry 46. It is possible to prevent a large stress from being generated on the surface, and to sufficiently avoid stress concentration on the connecting portion between the screw conveyor 38 and the first bearing 39 and the second bearing 40 constituting the operating portion 44. In this embodiment, the left and right mounts 46 and 47 are mounted portions on the casing 14 side. However, if the mounted portion is provided with a displacement difference absorbing mechanism between the operating portion 44 and the mounted portion, The other part of the conveyor case 14e may be used, and is not limited to the left and right mounts 46 and 47.

  A cylindrical case 71 projects from the left side wall 45b to the left so as to surround the left small diameter shaft portion 51b, and the left small diameter shaft portion 51b penetrates the left end surface of the case 71. It is covered with a ring-shaped lid plate 72. A space (not shown) is enclosed in a space surrounded by the cover plate 72 and the case 71, and dust in the hopper portion 16b leaks from the gap between the through hole 45b1 and the left small-diameter shaft portion 51b. I can't do it.

  Further, in the front slider 65 and the rear slider 66, soft metal 65a and 66a such as brass are interposed in the portions that slide with the front guide bar 63 and the rear guide bar 64. The slidability of the slider 66 is improved.

  In addition, communication holes 65b and 66b are drilled from the lower surface of the front slider 65 and the rear slider 66 to the sliding gaps 74 and 75 between the front guide bar 63 and the rear guide bar 64 and the front slider 65 and the rear slider 66. A grease nipple 73 for grease filling is inserted into both of the communication holes 65b and 66b.

  Thereby, the replenishment of the grease to the sliding gaps 74 and 75 can be easily performed from the lower side where the first bearing 39 is not provided via the grease nipple 73.

  That is, in the configuration as described above, the casing 14 includes a filter portion 16a that collects the dust in the exhaust gas, and a hopper portion 16b that stores the dust from the filter portion 16a, and a lower portion of the hopper portion 16b. In addition, in the bag filter 5 which is a dust collector in which a carry-out mechanism 29 for transferring the dust and discharging it to the outside of the casing 14 is disposed, the carry-out mechanism 29 receives the dust and transfers it to the discharge port 14e1. A screw conveyor 38 that is a member, and an operation unit 44 that includes a first bearing 39 and a second bearing 40 that are support members that operably support the screw conveyor 38, and at least a part of the operation unit 44 In this embodiment, the first bearing 39 is mounted between the left pedestal 46, which is the mounted portion on the casing 14 side, and the operating portion 44. Since the slide mechanism 42, which is a displacement difference absorbing mechanism capable of eliminating the displacement difference due to thermal expansion and contraction between the left gantry 46 and the operation unit 44, is provided, for example, the composition, flow rate, flow rate, temperature, etc. of the exhaust gas passing through the bag filter 5 Even if the set temperature of the heater 34 provided in the hopper 16b changes and a large difference occurs between the displacement amounts of the operation unit 44 and the left gantry 46, both the operation unit 44 and the left gantry 46 can be freely heated. It can be expanded and contracted, and no large stress is generated in the inside thereof. For this reason, for example, a first bearing 39. Which is a bearing for supporting a transfer member such as a screw conveyor 38 and a rotating shaft 51 of the screw conveyor 38. It is possible to reliably prevent damage to the support member such as the second bearing 40, generation of abnormal noise between the two members, and ignition of the powder for removing harmful substances due to frictional heat between the two members.

  Further, the displacement difference absorbing mechanism includes a front guide bar 63 and a rear guide bar 64 which are guide members extending from the left gantry 46 in the direction of the axis 51d which is the direction of thermal expansion and contraction, and the front guide bar 63 and the rear The guide bar 64 includes a front slider 65 and a rear slider 66 that are slide members that slide in the direction of the axis 51d, and the front slider 65 and the rear slider 66 are first bearings that are support members of the operating portion 44. 39, the operation unit 44 is moved together with the front slider 65 and the rear slider 66 in the direction of the axis 51d on the front guide bar 63 and the rear guide bar 64. The displacement difference between the two can be reliably eliminated, the structure of the displacement difference absorbing mechanism is simplified, the parts cost can be reduced, and the maintainability can be improved.

  In addition, the front slider 65 and the rear slider 66, which are the slide members, have communication holes 65b extending from the lower surface, which is the outer surface opposite to the first bearing 39, which is the support member, to the front guide bar 63 and the rear guide bar 64. 66b is drilled, and a grease nipple 73, which is a plug member for filling grease, is provided at the opening end of the communication holes 65b and 66b. Therefore, the front guide bar 63, the rear guide bar 64, the front slider 65, and the rear slider 66 The replenishment of the grease to the sliding gaps 74 and 75 between the front slider 65 and the rear slider 66 via the plug member such as the grease nipple 73 is performed on the side where the first bearing 39 is not connected. It can be performed from the lower side, and the workability of the grease replenishment work can be improved.

  The transfer member is a screw conveyor 38. The screw conveyor 38 is attached to a rotary shaft 51 and a rotary blade that pushes and transfers the dust in the axial direction 51d, which is the axial direction. 52, and the rotary blade 52 is formed in the opposite direction across the central shaft portion 51a1 that is the portion above the opening of the discharge port 14e1 by the rotary shaft 51, so that the single rotary shaft 52 is driven to rotate. Thus, dust can be transferred from the entire length range of the rotary shaft to an arbitrary position below the rotary shaft 52 toward the discharge port 14e1 opened at a substantially central position in the present embodiment. Design flexibility can be increased. In particular, as in the present embodiment, when the shaft driving device 41 is disposed at one end (right end) of the rotating shaft 51 and the slide mechanism 42 that is a displacement difference absorbing mechanism is provided at the other end (left end), the discharge port 14e1 is provided. By opening directly below the axial center of the rotating shaft 52, the rotary valve 48 and the storage container 50 can be connected to the discharge port 14e1 without interfering with the shaft drive device 41 and the slide mechanism 42. A large work space can be secured and the workability of dust discharge work can be improved.

  Further, above the screw conveyor 38 which is a transfer member in the hopper portion 16b, an air passage cover 28/80 having a half pipe-like structure opened downward is one end of the air passage cover 28/80. Since the right end is arranged so as to be connected to the exhaust gas inlet 14a1, laminar flow of the exhaust gas and the powder agent flowing into the air passage covers 28 and 80 from the inlet 14a1 can be promoted, and the wind pressure can be reduced. The air cleaner 10 of the filter portion 16a can be prevented from being vigorously shaken by direct spraying of the exhaust gas and powder, and the slaked lime can be stably attached to the filter cloth 21 of the air cleaner 10 and the filter cloth can be attached to the filter cloth. It is also possible to prevent the attached slaked lime from falling off. Further, the dust falling from the filter portion 16a is once received by the curved surface on the air passage covers 28 and 80, and then the curved surface can be slid and slowly dropped onto the screw conveyor 38. It is possible to directly drop onto the 29 screw conveyors 38 and prevent them from adhering to the screw conveyors 38 due to the impact at the time of dropping, thereby increasing the dust transfer efficiency.

  In addition, a plurality of baffle plates 30, 31, 32, and 33 that hinder the flow of exhaust gas from the inflow port 14 a 1 are suspended from the inner wall surface of the air passage cover 28, and the baffle plates 30, 31, 32, and 33, since the drooping lengths 30b, 31b, 32b, and 33b increase as the distance from the inflow port 14a1 increases, the exhaust gas introduced from the inflow port 14a1 and the powder agent blown together with the exhaust gas are used as baffle plates. 30, 31, 32 and 33 are scattered right and left in the axial direction, and can be blown up vigorously into the filter portion 16a from the lower opening 28d of the air passage cover 28 along the side wall of the hopper portion 16b. Can be made to flow uniformly into the filter portion 16a, and the processing effect of dust collection and removal of harmful substances can be enhanced. In particular, as the distance from the inflow port 14a1 increases, the suspended lengths 30b, 31b, 32b, and 33b of the baffle plates 30, 31, 32, and 33 are increased, and the amount of exhaust gas and powder scattered while passing through the air passage cover 28 Can be reduced, and the uniform inflow of exhaust gas and powder into the filter portion 16a can be further improved.

  And it is the dry distillation type incineration system 1 provided with the bag filter 5 which is the said dust collector, Comprising: The dry distillation incinerator 2 which carbonizes combustible waste, and the pyrolysis gas produced in this dry distillation incinerator 2 is burned A gas processing device 3 for cooling, a cooling tower 4 for cooling the exhaust gas generated in the gas processing device 3, and a chimney 6 for releasing the exhaust gas cooled by the cooling tower 4 and rendered harmless by the bag filter 5 to the atmosphere Therefore, the waste to be treated does not need to be pretreated, and even the waste with a relatively large outer dimension such as a waste tire is put in the original form from the inlet of the dry distillation incinerator 2 Therefore, the waste can be processed efficiently. Furthermore, according to the dry distillation incinerator 2, a combustible gas that can be easily burned is obtained as the pyrolysis gas, and the residual ash can be minimized and reused or discarded as it is. In addition, since the recovered combustible gas can be easily controlled for combustion, it can be automatically burned without risk of explosion, and excellent safety can be obtained. Furthermore, since the exhaust gas generated by the gas treatment device 3 is filtered and processed with slaked lime or activated carbon in the bag filter 5 to be cleaned and detoxified, no post-treatment is required except for special waste treatment. It can be. In addition, since the high-temperature exhaust gas can be used for many uses such as steam generation, heating, and drying, for example, energy saving and efficiency improvement of the entire system of the dry distillation incineration system 1 can be achieved. Furthermore, since the process and the equipment configuration of each device 2, 3, 4, 5, 6 provided in the dry distillation incineration system 1 are simple, operation, maintenance, inspection, etc. can be performed safely and easily, and excellent operability is achieved. can get.

  The present invention is provided with a filter part for collecting the dust in the exhaust gas and a hopper part for storing the dust from the filter part in the casing, and transferring the dust to the lower part of the hopper part. The present invention can be applied to all dust collectors and a dry distillation incineration system including the dust collection apparatus in which a discharge mechanism for discharging to the outside is arranged.

1 Dry distillation incineration system 2 Dry distillation incinerator 3 Gas treatment device 4 Cooling tower 5 Bag filter (dust collector)
6 Chimney part 14 Casing 14e1 Discharge port 16a Filter part 16b Hopper part 28/80 Airway cover 29 Unloading mechanism 30, 31, 32, 33 Baffle plates 30b, 31b, 32b, 33b Suspension length 38 Screw conveyor (transfer member)
39 First bearing (support member)
40 Second bearing (support member)
42 Slide mechanism (displacement difference absorption mechanism)
44 Operation part 46 Left stand (attached part)
51 Rotating shaft 51a1 Central shaft outlet (portion above the outlet opening)
52 Rotor 63 Front guide bar (guide member)
64 Rear guide bar (guide member)
65 Front slider (sliding member)
66 Rear slider (sliding member)
65b, 66b Communication hole 73 Grease nipple (plug member)

Claims (7)

  A casing is provided with a filter part for collecting the dust in the exhaust gas and a hopper part for storing the dust from the filter part, and the dust is transferred to the lower part of the hopper part and discharged outside the casing. In the dust collecting apparatus in which the carry-out mechanism is arranged, the carry-out mechanism includes an operation unit including a transfer member that receives the dust and transfers it to a discharge port, and a support member that operably supports the transfer member, A displacement difference absorbing mechanism capable of eliminating a displacement difference due to thermal expansion and contraction between the mounted portion and the operating portion between the mounted portion on the casing side to which at least a part of the operating portion is attached and the operating portion. A dust collector characterized by being provided.   The displacement difference absorbing mechanism includes a guide member extending in the heat expansion / contraction direction from the attached portion, and a slide member sliding on the guide member in the heat expansion / contraction direction. The dust collector according to claim 1, wherein the dust collector is connected to a support member.   3. The slide member is provided with a communication hole from an outer surface opposite to the support member to the guide member, and a plug member for filling grease is provided at an opening end of the communication hole. Dust collector.   The transfer member is a screw conveyor, and the screw conveyor includes a rotary shaft and a rotary blade attached to the rotary shaft to push and transfer the dust in the axial direction. The dust collector according to any one of claims 1 to 3, wherein the dust collector is formed in an opposite direction across a portion above the opening of the discharge port.   An air path cover having a halved pipe structure opened downward is disposed above the transfer member in the hopper so that one end of the air path cover is connected to the exhaust gas inlet. The dust collecting device according to any one of claims 1 to 4.   A plurality of baffle plates that hinder the flow of exhaust gas from the inflow port are suspended from the inner wall surface of the air passage cover, and the baffle plate has a drooping length that increases as the baffle plate is separated from the inflow port. The dust collector according to claim 5, wherein the dust collector is characterized in that:   A dry distillation incineration system comprising the dust collector according to any one of claims 1 to 6, wherein a dry distillation incinerator for carbonizing combustible waste, and heat generated in the dry distillation incinerator. A gas treatment device for burning cracked gas, a cooling tower for cooling the exhaust gas generated in the gas treatment device, and a chimney for releasing the exhaust gas cooled by the cooling tower and made harmless by the dust collector to the atmosphere A dry distillation incineration system characterized by including.

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