JP2020195972A - Substance removal device and substance removal system - Google Patents

Abstract

To provide a substance removal device and a substance removal system which can efficiently remove a substance containing powder dust, and to provide a substance removal device and a substance removal system which can remove a substance containing powder dust over a long period of time and can maintain long-term use of a filter member.SOLUTION: A second filter 130 has one or a plurality of bag filters 132 that partition the side of a powder dust gas inlet and the side of a cleaning gas outlet, a scraper member 134 that peels a substance containing powder dust attached to the bag filter 132, and drives the scraper member 134 and removes the substance attached to the one or plurality of bag filters 132.SELECTED DRAWING: Figure 1

Description

The present invention relates to a substance removing device and a substance removing system.

Patent Document 1 (Japanese Patent Laid-Open No. 2005-501169) discloses a method for gasifying biomass and a system thereof.

The method for gasifying biomass and its system according to Patent Document 1 is a method for gasifying biomass, in which the biomass is charged into a reactor and the temperature is between 600 and 1300 ° C. to which a deficient equivalent amount of oxygen is supplied. The synthetic gas in a method comprising a step of placing the synthetic gas underneath, a step of placing the obtained synthetic gas in a cleaning step in order to remove tar content generated from the step, and a step of supplying the synthetic gas to a consumer. The cleaning step is to saturate those synthetic gases with separately supplied oil, to condense this oil with the tar fraction, and to pass the gas through an absorber while absorbing the tar. It includes a step of adding additional oil to the gas, a step of discharging the washed gas, and a step of separating at least the tar fraction from the oil.

Patent Document 2 (Japanese Unexamined Patent Publication No. 2005-305249) discloses a method for converting a continuous biomass superheated steam treatment chemical raw material.

The continuous biomass superheated steam treatment chemical raw material method described in Patent Document 2 is a method in which the raw material biomass is treated with superheated steam to be continuously used as a chemical raw material, and the raw material biomass is reacted with the superheated steam. A step of producing an organic substance / water mixed steam and a carbide, a step of deriving the organic substance / water mixed steam from a superheated steam reactor and exchanging heat to obtain an organic substance aqueous solution, and introducing the carbide into a combustion furnace as fuel. It includes a step and a step of introducing the high-temperature combustion gas generated from the combustion furnace into a heating jacket covering the superheated steam reactor.

Patent Document 3 (Japanese Unexamined Patent Publication No. 2006-29243) discloses a power generation method using a gas engine.

The power generation method by a gas engine described in Patent Document 3 is a power generation method by a gas engine in which a gas engine is driven by using a fuel gas containing dust generated in a waste or biomass treatment stage as a fuel. The dust concentration in the gas is set to 5 mg / Nm3 or less in front of the gas engine and supplied to the gas engine.

Patent Document 4 (Japanese Unexamined Patent Publication No. 2006-128006) discloses a high-temperature carbonized fuel cell power generation system for biomass.

The carbonized high-temperature fuel cell power generation system of biomass described in Patent Document 4 receives a high-temperature fuel cell and exhaust heat discharged when the fuel cell operates, and thermally decomposes the biomass using the exhaust heat. A carbonization device that carbonizes, a gasification furnace that burns and gasifies the carbonized char produced by the carbonization device, and reforms a pyrolysis gas containing tar that has volatilized during carbonization, and a gasification furnace that is generated The fuel cell is provided with a gas refining device for purifying the carbonized gas at a temperature higher than the dew point temperature of steam, and the fuel cell uses the gasified gas generated in the gasification furnace and purified by the gas refining device as energy. It operates and supplies the exhaust heat discharged during the operation to the carbonization device as a heat source.

Patent Document 5 (Japanese Patent Laid-Open No. 2007-506856) discloses a low-temperature catalytic gasifier for biomass refined fuel.

The low temperature catalytic gasifier for biomass refined fuel described in Patent Document 5 has a fuel hopper (10) having a screw feeder (11) at the lower part for temporarily accommodating the refined fuel and quantitatively supplying the refined fuel, and the fuel. A catalytic circulation flow bed arranged in the vicinity of the hopper (10), having a charging inlet communicating with the screw feeder (11) in the central portion, and providing a hot air pipe (21) and a steam pipe (22) at the lower part. A dust collecting cyclone (30) that communicates with the gasification furnace (20) and the upper part of the catalytic circulation flow bed gasification furnace (20) via a pipe and collects fly ash from the upper side wall, and the dust collecting cyclone. A catalyst reformer (40) having a fixed bed filter adsorbent layer (41) in the lower layer and a flow catalyst layer (42) in the upper layer, which communicates with the upper part of (30) via a pipe, and the catalyst reformer. A heat exchanger (50) communicating with the catalyst reformer (40) via an upper portion of (40) and a pipe, and a heat exchanger (50) arranged in the vicinity of the heat exchanger (50). A tar scrubber (60) including a main body (61), a tar storage tank (62), and a circulation pump (63) for circulating tar, and a gas storage tank (70) arranged in the vicinity of the tar scrubber (60). And, including.

Patent Document 6 (Japanese Patent Laid-Open No. 2007-510789) discloses a gasifier.

The gasifier described in Patent Document 6 includes a) a fuel valve (22) for loading the solid fuel (11) into the first oxidation zone (8), and b) the first oxidation zone (1). 8) A first throat (2) defining the lower edge, c) a second throat (4) defining the lower edge of the second oxidation zone (14), and d) said first. A reduction zone (5) linking the oxidation zone (8) of 1 to the second oxidation zone (14), and an e) vortex discharge pipe for two flammable emissions arranged opposite to each other (in the reduction zone). (Vortex diskage pipes) (18), the gas flow is in the same direction as the fuel flow in the first oxidation zone, and the gas flow is in the opposite direction to the fuel flow in the second oxidation zone. It gasifies biomass and waste to produce combustible fuels.

Patent Document 7 (Japanese Unexamined Patent Publication No. 2009-132829) discloses a biomass decomposition gas treatment apparatus.

The biomass decomposition gas treatment apparatus described in Patent Document 7 is a biomass decomposition gas treatment apparatus that drives a dual fuel engine using a biomass decomposition gas obtained by thermally decomposing biomass and a liquid fuel as fuel, and thermally decomposes the biomass. A gasifier that generates biomass decomposition gas, a filter that introduces biomass decomposition gas from the gasifier to remove dust contained in the biomass decomposition gas, and a filter that introduces biomass decomposition gas into liquid fuel from the filter. It is provided with a liquid fuel tank that collects the tar contained therein, sends the biomass decomposition gas to the air supply pipe of the dual fuel engine, and supplies liquid fuel to the fuel injection pump of the dual fuel engine. ..

Patent Document 8 (Japanese Patent Laid-Open No. 2009-501807) discloses an automatic modular biomass power generation method and apparatus.

The automatic modular biomass power generation method and apparatus described in Patent Document 8 is an automated method for converting a solid carbonaceous material into a low tar fuel gas inside a gasification reactor chamber, and the carbonaceous material is converted into the chamber. By injecting oxide gas at multiple levels in the gasification reactor chamber, the step of introducing into, the step of converting the first portion of the carbonaceous material into char material in the flame pyrolysis zone, and the step. A step of controlling multiple temperatures along the length of the chamber, a step of controlling the amount of the oxidative gas injected from at least one of the multiple levels, and a step of injecting upstream or downstream of the pyrolysis zone. By increasing or decreasing the amount of oxide gas, the position of the pyrolysis zone is changed inside the chamber, and by applying at least one force to the chamber, the char material is charged in the gasification reactor chamber. The step of controlling the porosity and the second portion of the carbonaceous material and the conversion of the char material and the second portion of the carbonaceous material into the low tar fuel gas in the gasification reactor chamber. It includes steps.

Patent Document 9 (Japanese Unexamined Patent Publication No. 2011-168790) discloses a gasification system.

The gasification system described in Patent Document 9 has A) a) a fuel valve (22) for supplying a solid fuel (11) incorporating biomass, fossil fuel, waste or a combination thereof, and the supplied solid fuel. A first oxidation zone (8) that oxidizes (11), b) a first throat (2) located below the first oxidation zone (8), and c) the first throat ( A reduction zone (5) located at the bottom of 2) and a second oxidation zone (14) that oxidizes residual carbon dioxide generated from the solid fuel (11) located at the bottom of the reduction zone (5). E) A second throat (4) arranged below the second oxidation zone (14), and f) a cylinder surrounding the reduction zone (5), said first oxidation zone (8). The solid fuel is characterized by arranging a discharge pipe (18) for discharging the flammable waste generated in the second oxidation zone (14) to the outside via the micropore catalytic reaction zone (3). A gasifier that gasifies the fuel, B) a water scrubber that purifies acids, fine particles, or water-soluble toxins from the gas produced by the gasifier, and C) absorbs and removes tar and water from the gas from the water scrubber. It is sequentially provided with a double polymer filter unit, D) a gas suction fan, and E) means for discharging the generated gas for clean combustion.

Patent Document 10 (Japanese Patent Laid-Open No. 2012-506483) discloses a process for purifying synthetic gas.

The process for purifying syngas described in Patent Document 10 is a process for purifying synthetic gas, and a) the synthetic gas is brought into contact with one or more adsorbents upstream of the catalytic candle filter. It includes forming a purified synthetic gas and b) passing the purified synthetic gas through a candle filter containing a mixed decomposition catalyst to remove ammonia and tar, thereby producing a purified synthetic gas.

Patent Document 11 (Japanese Patent Laid-Open No. 2013-506026) discloses a method and a system for gasifying biomass.

The method and system for gasifying biomass described in Patent Document 11 is to gasify the biomass in the reactor (3) at a temperature of 600 to 1300 ° C., and remove tar from the gas flow generated from the gas flow. A method of purifying with, comprising removing the tar in two steps, wherein in the first upstream cleaning step, the gas from the reactor is the first at a temperature of 250-900 ° C. It is infiltrated with a hydrocarbon-based fluid, and in the second cleaning step after the first cleaning step, the remaining tar is absorbed by the second hydrocarbon-based fluid, and the first fluid is substantially The first mixture of tar and the first fluid, which contains aromatic hydrocarbons and is produced from the first cleaning step, is supplied to the first separation step (23) for separating the second fluid. In the first separation step (23), the separation is based on the evaporation temperature of the associated fraction, and the light fractions generated from the first separation step are the reactor (in the first cleaning step). In addition to the gas flow from 3), heavy fractions are removed.

Patent Document 12 (Japanese Patent Laid-Open No. 2015-510522) discloses a biomass gasification island method at high temperature and under normal pressure.

The biomass gasification island method described in Patent Document 12 at high temperature and under normal pressure is a method of gasifying biomass at high temperature and normal pressure by using a gasified island, and the above method pretreats biomass. Includes a step of applying and storing, a step of gasifying biomass in a gasification furnace, a step of cooling the crude synthetic gas, a step of cleaning the crude synthetic gas to remove dust, and a step of storing a new synthetic gas. , Heat energy for gasifying biomass in a gasification furnace is supplied by an external heat source, the reaction temperature in the gasification furnace is controlled to 1300 to 1750 ° C., and the biomass in the gasification furnace is converted into crude synthetic gas. Then, the slag is removed from the gasifier in a liquid state, and the crude synthetic gas is cooled by a quenching tower and a two-stage exhaust heat boiler, where the manifest heat is recovered, and the cooled crude synthetic gas is cleaned and dust-removed. The resulting clean, new synthetic gas is stored in a gas storage tank and the entire gasified island is operated at negative pressure or positive pressure from 0 to 50 KPa.

Special Table 2005-501169 Japanese Unexamined Patent Publication No. 2005-305249 Japanese Unexamined Patent Publication No. 2006-29243 Japanese Unexamined Patent Publication No. 2006-128006 Special Table 2007-506856 Special Table 2007-510789 JP-A-2009-132829 Special Table 2009-501807 Japanese Unexamined Patent Publication No. 2011-168790 Special Table 2012-506483 Japanese Patent Application Laid-Open No. 2013-506026 Special Table 2015-510522

Conventionally, various researches and developments have been carried out on the gasification method using biomass. In particular, it is difficult to realize continuous power generation using the gas generated by the gasification method using biomass, although each company is desperately conducting research and development.
That is, as in Cited Documents 1 to 12, a method of decomposing tar content with oxygen, decomposing tar content by steam activation, or removing tar content with a liquid scrubber or the like is common.

However, in these methods, it is difficult to carry out continuous power generation for a long period of time using the gas generated by the biomass gasification method. That is, the gas contains at least one of dust and tar components. Moreover, it is difficult to operate for a long period of time not only in gasification power generation using biomass but also in other tar removal such as tar removal in carbonization.

A main object of the present invention is to provide a substance removing device and a substance removing system capable of efficiently removing a substance containing at least one of a dust and a tar component.
Another object of the present invention is to provide a substance removing device and a substance removing system capable of removing a substance containing at least one of dust and tar components for a long period of time and maintaining long-term use of the filter member. Is.

(1)
The substance removing device according to one aspect includes one or a plurality of filter members that separate the dust gas inlet side and the clean gas outlet side, a scraper member that strips substances containing dust adhering to the filter member, and a drive device that drives the scraper member. , And drives the scraper member to remove substances adhering to one or more filter members.

In this case, the substance containing dust can be removed by one or more filter members. In addition, a substance containing at least one of dust and a tar component adhering to the filter member can be removed by the scraper member.
As a result, substances containing at least one of dust and tar components can be removed for a long period of time, and long-term use of the filter member can be maintained.
The term "dust" in the specification refers to a substance containing at least one of dust and a tar component.

(2)
The substance removing device according to the second invention is a substance removing device according to one aspect, and the filter member may consist of at least one of a metal filter, a ceramic filter, a bag filter, and a non-woven fabric filter.

In this case, when the filter member is made of a metal filter or a ceramic filter, substances containing at least one of dust and tar components can be removed for a long period of time even at a high temperature.
Further, when the filter member is composed of a bug filter and a non-woven fabric filter, a substance containing at least one of dust and a tar component can be removed at low cost.

(3)
The substance removing device according to the third invention is the substance removing device according to the first aspect or the second invention, in which the scraper member is a predetermined layer thickness of a substance containing at least one of dust and tar components adhering to the filter member. The substance exceeding the predetermined layer thickness may be peeled off while remaining.

In this case, the scraper member is formed so as to strip off the adhering substance exceeding the predetermined layer thickness while leaving a predetermined layer thickness on the filter member. As a result, since the scraper member does not come into direct contact with the filter member, it is possible to prevent the filter member from being damaged and realize long-term use of the filter member.

(4)
The substance removing device according to the fourth invention is the substance removing device according to the third aspect to the third invention. The filter member has a bag shape or a plate shape extending in one direction, and each has the same bag shape or plate. Arranged in parallel in shape, the scraper members may be arranged around the bag or plate shape of the filter member and may be driveably formed along one direction.

In this case, the filter members are arranged in parallel. Further, since the scraper member can be driven along one direction formed by extending the bag shape or plate shape of the filter member, by driving the scraper member, the filter member can be driven at once in a short time. The substance can be removed.
As the filter member, any filter such as a metal filter, a ceramic filter, and a bug filter can be used. The metal filter can be tubular, bag-shaped, honeycomb structure, or pleated structure, the ceramic filter can be tubular or honeycomb structure, and the bug filter can be tubular or bag-shaped. , A pleated structure can be used.
The pleated structure or honeycomb structure filter is preferably cut off with an electric heater or the like, burned off, the filter is regenerated, or the filter is washed by backwashing.

(5)
The substance removing device according to the fifth invention is the substance removing device according to the fourth aspect to the fourth aspect, and the substance containing dust may be a gas containing tar mainly generated from a woody biomass fuel.

In this case, since the substance containing dust mainly contains tar, the tar can be removed for a long period of time, and the long-term use of the filter member can be maintained.

(6)
The substance removal system according to another aspect is the substance removal device according to any one of claims 1 to 5, which is a pre-stage substance removal device that removes substances in a gas containing dust and a substance removal device located downstream of the pre-stage substance removal device. It includes a device.

In this case, since the pre-stage substance removing device is further provided upstream of the substance removing device, the substance can be removed for a long period of time, and the long-term use of the filter member on the downstream side can be maintained.

(7)
The substance removal system according to the seventh invention is the substance removal system according to another aspect, in which the pre-stage substance removal device adheres to a cylindrical portion having a dust gas inlet side and a clean gas outlet side and an inner peripheral surface of the cylindrical portion. A swirling scraper member capable of stripping a substance containing dust and a temperature adjusting unit for adjusting the temperature difference between the cylindrical portion and the swirling scraper member are included. The difference is adjusted so that substances containing dust are accumulated only on the inner peripheral surface of the cylindrical portion.

In this case, the temperature of the cylindrical portion is adjusted so that the substance adheres to the inner peripheral surface of the cylindrical portion. Further, the temperature of the swirling scraper member is adjusted so that the substance does not easily adhere to the swirling scraper member.
As a result, the swirling scraper member can remove the dust-containing substance accumulated on the inner peripheral surface of the cylindrical portion. Therefore, after removing the substance containing dust to some extent by the pre-stage substance removing device, the substance containing dust can be further removed by the substance removing device. That is, the substance containing dust can be removed for a long period of time in the substance removing device in the subsequent stage, and the long-term use of the filter member can be maintained.

Schematic structural drawing showing an example of the substance removal system according to the present embodiment. Schematic cross-sectional view showing an example of the first filter Schematic diagram of a part of FIG. 2 enlarged Schematic cross-sectional view showing an example of the second filter Enlarged view of a part of the second filter in FIG. Schematic diagram for explaining an example of the operation of the second filter Schematic structural drawing showing another example of a substance removal system

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are designated by the same reference numerals. Moreover, in the case of the same code, their names and functions are also the same. Therefore, the detailed description of them will not be repeated.

(Substance removal system 100)
FIG. 1 is a schematic structural diagram showing an example of the substance removal system 100 according to the present embodiment.
As shown in FIG. 1, the substance removal system 100 includes at least a first filter 120 and a second filter 130. Further, the substance removal system 100 is provided on the downstream side of the gasifier device 200 and on the upstream side of the engine 300. Further, the substance removal system 100 may have a heat exchanger 140.

As shown in FIG. 1, in the gasification furnace device 200, the gasification treatment is carried out using woody biomass fuel. As a result, the gas containing tar is supplied from the gasifier device 200 to the first filter 120.
Next, the tar component is removed from the gas in the first filter 120. Next, the gas after the removal of the tar component is carried out is supplied from the first filter 120 to the second filter 130.

In the second filter 130, the tar component is further removed from the gas. That is, the tar component that could not be removed by the first filter 120 is further removed. That is, in the present embodiment, tar removal in the gas is carried out in a plurality of layers.

Next, gas is supplied from the second filter 130 to the heat exchanger 140. Heat exchange processing is performed on the heat of the gas supplied from the second filter 130 to the heat exchanger 140, and the gas after heat exchange is supplied to the engine 300. The engine 300 is driven by a gas from which tar has been removed.

(First filter 120)
FIG. 2 is a schematic cross-sectional view showing an example of the first filter 120, and FIG. 3 is an enlarged schematic view of a part (A) of FIG.

As shown in FIG. 2, the first filter 120 mainly includes a cylindrical inner wall 122, a scraper member 124, a rotary motor 126, and a temperature adjusting mechanism 128.
That is, the first filter 120 includes a cylindrical portion mainly having a cylindrical inner wall 122, a bottom portion and a top plate portion, a scraper member 124 arranged in the cylindrical portion, a rotary motor 126 for rotating the scraper member 124, and a cylinder. Includes a temperature control mechanism 128 provided around the portion.

The first filter 120 has at least a filter function. Here, the filter function refers to a substance that removes dust or tar contained in a gas or the like as a filter function.
Therefore, not only those that separate dust or tar from gas etc. by a fine filter through which gas passes, but also those that separate dust or tar from gas etc. by an adhesion and scraping structure, dust or tar by adhesion or acquisition, shaving structure, etc. It also includes those that separate tar from gas and the like.
Further, the dust refers to those containing at least one of dust and a tar component.

The temperature adjusting mechanism 128 has an outer wall arranged outside the inner wall 122 arranged concentrically with the inner wall 122 of the cylindrical portion, and a refrigerant such as air is formed in a space formed between the inner wall 122 and the outer wall. Is configured to be passed through. The flow rate of the refrigerant can be adjusted by a pump or the like, whereby the temperature of the inner wall 122 of the cylindrical portion can be adjusted.

As shown in FIG. 2, a gas inflow port 121a from the gasifier device 200 is provided on the upstream side of the first filter 120, and gas to the second downstream filter 130 is provided on the downstream side of the first filter 120. Is provided with a gas discharge port 121b for supplying the gas.

In the present embodiment, the cylindrical inner wall 122 of the first filter 120 has a heat exchange function. In the present embodiment, it is desirable that the gas temperature at the gas inflow port 121a is in the range of 300 ° C. or higher and 600 ° C. or lower, and the gas temperature at the gas discharge port 121b is in the range of 100 ° C. or higher and 150 ° C. or lower.
In the present embodiment, the first filter 120 has a filter function. However, in addition to the filter function, the first filter 120 may have a heat exchange function.

That is, the temperature adjusting mechanism 128 adjusts the temperature of the inner wall 122 of the first filter 120 to be, for example, around 120 ° C. Further, the temperature adjusting mechanism 128 adjusts the temperature of the scraper member 124 so as to be, for example, around 300 ° C. As described above, the heat absorbed by the temperature adjusting mechanism 128 is used in the gasifier device 200 and the like.

The scraper member 124 of the first filter 120 includes a shaft portion 124a and a spiral blade 124b. The central end of the spiral blade 124b is fixed to the shaft 124a. The shaft portion 124a is arranged in the vertical direction.
As shown in FIGS. 2 and 3, the shaft portion 124a is provided at the axial position of the cylindrical inner wall 122, and the spiral blade 124b is provided so as to have a predetermined distance from the inner wall 122.
As shown in FIG. 3, in the present embodiment, the distance T1 between the inner wall 122 and the end of the spiral blade 124b is preferably 0.5 mm or more and 10 mm or less, and more preferably 1 mm or more and 3 mm or less. preferable.
The distance T1 is the thickness of tar, charcoal, and ash adhering to the inner wall 122. In the case of the present embodiment, since the heat exchange function is included, the thickness T1 can be made a constant amount, and the fluctuation of the heat exchange efficiency can be suppressed.

Next, the rotary motor 126 of the first filter 120 is attached to the shaft portion 124a, and when the rotary motor 126 rotates, the spiral blade 124b slides and moves with respect to the inner wall 122 of the cylinder. The sliding movement here means that when the tar adheres to the inner wall 122, the spiral blade 124b comes into contact with the tar, and the tip of the spiral blade 124b does not come into direct contact with the inner wall 122.
In the present embodiment, the rotary motor 126 is set to rotate 30 times per hour. In the present embodiment, it is set to rotate continuously, but the present invention is not limited to this, and it may be set to rotate intermittently at regular intervals or unequal intervals.

With the above configuration, the gas flowing in from the gas inflow port 121a of the first filter 120 moves to the gas discharge port 121b along the inner wall 122 of the cylinder.
In this case, when the tar contained in the gas moves along the inner wall 122, the tar adheres to the inner wall 122. Further, since the temperature of the scraper member 124 is adjusted to be around 300 ° C., it is possible to prevent tar from adhering to the shaft portion 124a and the spiral blade 124b of the scraper member 124 in a vaporized state. ..

As described above, the tar contained in the gas adheres only to the inner wall 122 and does not adhere to the scraper member 124. As a result, the tar adhering to the inner wall 122 can be scraped off by the scraper member 124.
In the present embodiment, since the tar is scraped off in the direction of gravity by the spiral blade 124b, it is preferable that the direction of the spiral blade 124b when rotated is downward in gravity.

(Second filter 130)
FIG. 4 is a schematic cross-sectional view showing an example of the second filter 130, FIG. 5 is an enlarged view of a part (B) of the second filter 130 of FIG. 4, and FIG. 6 is a second. It is a schematic diagram for demonstrating an example of operation of a filter 130.

As shown in FIG. 4, the second filter 130 includes a plurality of bug filters 132, a scraper member 134, and an air pump 136.

As shown in FIG. 4, the upstream side of the second filter 130 is connected to the gas discharge port 121b of the first filter 120, and the downstream side of the second filter 130 is connected to the heat exchanger 140.
As shown in FIG. 4, a plurality of bug filters 132 are provided between the upstream side and the downstream side of the second filter 130.
The bag filter 132 is formed in a bag shape with an opening on the downstream side. A plurality of openings are formed in the horizontal closing plate arranged in the main body of the second filter 130, and the openings of the bag filter 132 are matched so that the downstream end openings of the bag filters 132 match the openings. The peripheral edge is fixed to the closing plate.
The plurality of bug filters 132 in the present embodiment use a filter cloth, a woven cloth, or a non-woven fabric to collect soot and dust. Any material such as glass fiber or metal mesh is used for the filter cloth, the woven cloth, and the non-woven fabric.

As shown in FIG. 4, the plurality of bug filters 132 are arranged in parallel.
Further, as shown in FIGS. 4 and 5, a scraper member 134 is formed between the plurality of bug filters 132.
In the present embodiment, the plurality of bug filters 132 are arranged in the direction from the upstream side to the downstream side, but the present invention is not limited to this, and intersects the direction from the upstream side to the downstream side. It may be arranged in a direction or in a direction orthogonal to the direction along the upstream side to the downstream side.

As shown in FIG. 5, the scraper member 134 is formed so as to move with a predetermined interval T2 from the bug filter 132.
That is, by passing through the bag filter 132 in the flow FL of the gas containing the tar TL component, the bag filter 132 is formed with a layer having a predetermined thickness in which the tar TL component reaches a predetermined interval T2. The thickness of the layer is preferably 0.5 mm or more and 10 mm or less, and more preferably 1 mm or more and 5 mm or less.

Further, as shown in FIG. 6, the scraper member 134 is formed so as to reciprocate in the direction of the arrow V by the air pump 136. The air pump 136 has a built-in solenoid valve so that it can reciprocate.
In the present embodiment, the scraper member 134 is constructed so as to reciprocate once per minute by the air pump 136. The scraper member 134 may be constructed so as to continuously reciprocate, or may be constructed so as to intermittently reciprocate.

It is preferable that the scraper member 134 according to the present embodiment can mechanically remove dust or tar with the bug filter 132 and a predetermined interval T2 open. Further, the air pump 136 and the solenoid valve are exemplified as the mechanism for reciprocating the scraper member 134, but the present invention is not limited to this, and a stepping motor, an AC motor, a DC motor, a hydraulic device, or any other actuator may be used.
As the scraper member 134, a member having various arbitrary shapes such as a metal mesh shape, a shape such as a car wiper, and a knife shape can be used.
Further, the scraper member 134 is supposed to perform a reciprocating motion, but the present invention is not limited to this, and only the outward path moves with the bug filter 132 and the predetermined interval T2 open, and the return path is the predetermined interval T2 from the bug filter 132. It may be moved with the above-mentioned large interval. In this case, it is possible to prevent the accumulation of at least one of dust and tar on the scraper member 134.

Finally, the clean gas discharged from the second filter 130, that is, the gas containing no tar, is supplied to the heat exchanger 140 to perform heat quantity conversion. Finally, since the clean gas is supplied to the engine 300, the number of maintenances in the engine 300 can be greatly reduced. That is, it is possible to prevent the tar TL from adhering or accumulating on the mechanical portion such as the piston in the engine 300.

As described above, in the present embodiment, since the scraper member 134 is not constructed so as to come into direct contact with the plurality of bug filters 132, it is possible to prevent the scraper member 134 from rubbing the surface of the bug filter 132. it can. That is, the deterioration of the bug filter 132 with time can be suppressed.

(Substance removal system 100)
FIG. 7 is a schematic structural diagram showing another example of the substance removal system 100.
Hereinafter, the difference between the substance removal system 100 shown in FIG. 7 and the substance removal system 100 shown in FIG. 1 will be described.

As shown in FIG. 7, the substance removal system 100 includes only the second filter 130. Further, the substance removal system 100 is provided on the downstream side of the gasifier device 200 and on the upstream side of the engine 300. Further, the substance removal system 100 may have a heat exchanger 140.

Unlike the second filter 130 of FIGS. 1 and 4, the second filter 130 shown in FIG. 7 does not consist of one or more bug filters 132, but one or more ceramic filters, or one or more metal filters. Consists of. As a result, even when a gas containing tar in the range of 300 ° C. or higher and 600 ° C. or lower flows in from the gasifier device 200, the substance can be removed for a long period of time.
Further, since the scraper member 134 does not come into direct contact with one or more ceramic filters or one or more metal filters, tar removal can be carried out more smoothly by the mesh containing tar TL.

As described above, by using the substance removing device including the substance removing system 100 and the second filter 130 according to the present invention, substances containing dust can be efficiently removed, and long-term use can be maintained. The number of maintenance of the substance removal system 100 can be reduced.

In the present invention, the bug filter 132 corresponds to "one or more filter members", the scraper member 134 corresponds to "scraper member", the second filter 130 corresponds to "substance removal device", and the first filter. 120 corresponds to the "pre-stage substance removing device", the substance removing system 100 corresponds to the "substance removing system", the inner wall 122 of the cylinder corresponds to the "cylindrical portion", and the scraper member 124 corresponds to the "swivel scraper member". However, the temperature adjusting mechanism 128 corresponds to the "temperature adjusting unit".

A preferred embodiment of the present invention is as described above, but the present invention is not limited thereto. It will be appreciated that various embodiments are made that do not deviate from the spiritual scope of the present invention. Further, in the present embodiment, the actions and effects according to the constitution of the present invention are described, but these actions and effects are examples, and do not limit the present invention.

100 Material removal system 120 1st filter 122 Cylindrical inner wall 124 Scraper member 128 Temperature control mechanism 130 2nd filter 132 Bug filter 134 Scraper member

Claims (7)

One or more filter members that separate the dust gas inlet side and the clean gas outlet side,
A scraper member that removes dust-containing substances adhering to the filter member, and
Including a driving device for driving the scraper member,
A substance removing device that drives the scraper member to remove substances adhering to the one or more filter members. The substance removing device according to claim 1, wherein the filter member comprises at least one of a metal filter, a ceramic filter, a bug filter, and a non-woven fabric filter. The substance removing device according to claim 1 or 2, wherein the scraper member strips a substance exceeding the predetermined layer thickness while remaining a predetermined layer thickness of a substance containing dust adhering to the filter member. The filter members have a bag shape or a plate shape extending in one direction, and are arranged in parallel in the same bag shape or plate shape.
The substance removing device according to any one of claims 1 to 3, wherein the scraper member is arranged around the bag shape or the plate shape of the filter member and is formed so as to be driveable along the one direction. .. The substance removing device according to any one of claims 1 to 4, wherein the substance containing dust contains tar mainly generated from a woody biomass fuel. A pre-stage substance remover that removes substances in gas including dust,
A substance removal system including the substance removal device according to any one of claims 1 to 5, which is arranged downstream of the pre-stage substance removal device. The pre-stage substance removal device is
A cylindrical part having a dust gas inlet side and a clean gas outlet side,
A swirling scraper member capable of removing substances containing dust adhering to the inner peripheral surface of the cylindrical portion, and
Includes a temperature control section that adjusts the temperature difference between the cylindrical section and the swivel scraper member.
A substance removal system in which a substance containing dust is accumulated only on the inner peripheral surface of the cylindrical portion by adjusting the temperature difference between the cylindrical portion and the swirling scraper member by the temperature adjusting portion.