JP6224281B2 - Char supply hopper, char recovery device and gasifier system - Google Patents

Description

  The present invention relates to a char supply hopper, a char recovery device, and a gasification furnace system. More specifically, the present invention relates to a char supply hopper, a char recovery device, and a gasification furnace system capable of accurately measuring char.

  The carbonaceous raw material gasification facility is a facility that converts the carbonaceous raw material into a gas mainly composed of CO, H 2, etc. by a gasifying agent containing oxygen or water vapor. This carbonaceous raw material gasification facility is generally composed of a carbonaceous raw material supply device, a gasification furnace, and a char recovery device. The carbonaceous raw material is supplied to the gasification furnace by a carrier gas such as nitrogen and a gasifying agent (air, oxygen-enriched air, oxygen, water vapor, etc.) is supplied, and the carbonaceous raw material is combusted in the gasification furnace. To produce a product gas (combustible gas). And this product gas removes the unreacted part (char) of the carbon-containing raw material in the char recovery device.

The char recovery apparatus in the carbonaceous raw material gasification facility described above removes the contained char from the product gas generated in the gasification furnace using a plurality of stages of dust collectors. The recovered char is returned to the gasification furnace by a predetermined amount by the char supply device. A char supply hopper is installed as a char supply device. When recharging the collected char into the gasification furnace, it is necessary to control the operation so that the amount of char recovered and the amount of char supplied are approximately balanced. To that end, it is necessary to accurately grasp the amount of char held. is important.
For example, Patent Document 1 discloses that a volume (level) inside a hopper is measured using a radiation source section and a γ-ray detector provided inside the sheath tube.

JP 2013-57048 A

However, the invention disclosed in Patent Document 1 has a problem that char is deposited on the sheath because the sheath having the radiation source and the γ-ray detector inside is cylindrical.
When the amount of char stored in the char supply hopper moves from the upper side to the lower side of the corresponding sheath tube, char may be deposited on the upper portion of the sheath tube. At this time, the char accumulated in the upper portion of the sheath tube hinders accurate volume measurement, for example, it is erroneously measured that the char is stored up to the upper portion of the sheath tube even though the amount of char is actually small. As a result, it is impossible to correctly grasp the amount of retained char, and it becomes impossible to perform a quantitative supply of char, which makes stable operation difficult. As a result, the gasification furnace may be stopped.

  This invention is made | formed in view of such a situation, Comprising: It aims at providing the char supply hopper, char collection | recovery apparatus, and gasification furnace system which can measure char | charcoal accurately.

In order to solve the above problems, the char supply hopper, the char recovery device, and the gasifier system of the present invention employ the following means.
The present invention includes a char supply hopper main body that supplies separated char to the gasification furnace side, two or more sheath tubes that are inserted from the side wall of the char supply hopper main body and aligned with each other in the vertical axis direction, A radiation source provided in one of the sheath tubes and irradiating the inside of the char supply hopper body with γ rays, a γ ray detector provided in the other sheath tubes and detecting the irradiated γ rays, A nozzle provided with an injection port at the base end opposite to the inner side of the char supply hopper main body of the nozzle provided on the side wall of the char supply hopper main body, and so as to rise from the circumference on the circumference of the sheath pipe Two guides are provided side by side in a direction along the central axis of the sheath tube, and a guide that forms a flow path for guiding an inert gas injected from the nozzle to the inside of the char supply hopper body is provided between the guides. , Inert gas sprayed from the nozzle Flows along between the guide employs a char supply hopper to blow the char deposited on top of the sleeve pipe.

According to the present invention, the char deposited on the upper portion of the sheath tube can be removed by the char removing means, so that the char can be prevented from being deposited on the sheath tube. Therefore, accurate volume measurement can be performed and stable operation can be continued.
Further, even if the char is accumulated, the char can be removed by the char removing means.

  The present invention employs a char recovery device including the char supply hopper described in the previous section.

  The present invention employs a gasification furnace system including the char recovery device described in the previous section.

  According to the present invention, char accumulation on the sheath tube having the radiation source section and the γ-ray detector is prevented, so that the amount of retained char can be correctly grasped and stable operation can be continued.

It is the schematic block diagram which showed the gasification furnace system provided with the char supply hopper concerning 1st reference embodiment of this invention. It is the longitudinal cross-sectional view which showed the char supply hopper concerning 1st reference embodiment of this invention. It is a transverse cross section of a sheath tube which has a radiation source part concerning a 1st reference embodiment of the present invention. It is the longitudinal cross-sectional view which showed the front-end | tip part of the sheath tube which has the gamma ray detector concerning 1st reference embodiment of this invention. It is the cross-sectional view which showed the state which the char accumulated on the upper part of the sheath pipe made into the cylindrical shape in a cross section. The cross section of the sheath pipe concerning the 1st reference embodiment of the present invention is shown, (a) is a cross section showing the state where a taper part is perpendicular, and (b) is a modification of (a). It is the cross-sectional view which showed the state which the taper part decentered. It is a partial expansion longitudinal cross-sectional view of the sheath tube concerning 1st Embodiment of this invention, and the vicinity part. It is the partial expansion longitudinal cross-sectional view of the sheath tube concerning the modification of 1st Embodiment of this invention, and the vicinity part. It is a partial expanded longitudinal cross-sectional view of the sheath pipe and the vicinity part concerning 2nd reference embodiment of this invention.

A reference embodiment of a char supply hopper, a char recovery device, and a gasification furnace system according to the present invention will be described below with reference to the drawings.
[First embodiment]
Hereinafter, a first reference embodiment of the present invention will be described with reference to FIG.
FIG. 1 shows a schematic configuration of a char supply hopper, a char recovery device, and a gasification furnace system according to the present embodiment.
As shown in FIG. 1, the gasification furnace system 10 includes a pulverized coal supply facility 30 that supplies pulverized coal 31 obtained by pulverizing raw coal, etc., and a gasified product gas by supplying the pulverized coal 31. (Flammable gas) Coal gasification furnace 14 that generates 11A, a char recovery device 50 that recovers char 55 in the generated gas 11A that is a gasification gas, and a gas that purifies the generated gas 11B from which the char 55 has been separated A refining device 16, a gas turbine facility 17 that burns purified fuel gas 11 </ b> C to drive a turbine, and a heat recovery steam generator (HRSG) that introduces turbine exhaust gas 81 from the gas turbine facility 17 A steam turbine (ST) facility 18 operated by the steam 82 generated in 20, the gas turbine facility 17 and / or Has an electric generator 19 which is connected to the steam turbine system 18 as main components.

  The pulverized coal supply facility 30 according to the present embodiment pulverizes raw coal (for example, coal, lignite, etc.) from a raw coal bunker (not shown), and converts the pulverized coal 31 into the coal gasifier 14 to the pulverized coal bunker. 32.

  The pulverized coal 31 supplied from the pulverized coal bunker 32 can be supplied to the coal gasifier 14.

That is, the coal gasification furnace 14 is connected to the compressed air supply line 41 from the gas turbine equipment 17 (compressor 61), and can supply the compressed air 37 compressed by the gas turbine equipment 17. The air separation device 42 separates and generates nitrogen (N 2) and oxygen (O 2) from air in the atmosphere, and a first nitrogen supply line 43 is connected to the coal gasifier 14. A second nitrogen supply line 45 is also connected to the coal gasification furnace 14, and a char discharge line 56 for returning the char 55 recovered from the char recovery device 50 from the char supply hopper 53 is connected to the second nitrogen supply line 45. Has been. Further, the oxygen supply line 47 is connected to the compressed air supply line 41. In this case, nitrogen (N ₂ ) is used as a conveying gas for the pulverized coal 31 and the char 55, and oxygen (O ₂ ) is used as an oxidizing agent.

  Here, in this reference embodiment, the char 55 is supplied to the coal gasifier 14, but the char 55 recovered by the char recovery device 50 is mixed with the pulverized coal 31 and supplied into the coal gasifier 14. You may make it do.

The coal gasification furnace 14 is, for example, a spouted bed type gasification furnace, which combusts and gasifies pulverized coal 31, char 55, air (oxygen) supplied therein, or water vapor as a gasifying agent. A generated gas 11A mainly composed of carbon monoxide is generated, and a gasification reaction is caused by using the generated gas 11A as a gasifying agent. The coal gasifier 14 discharges foreign matters such as molten slag mixed with pulverized coal 31.
In the present embodiment, a spouted bed gasification furnace is exemplified as the coal gasification furnace 14, but the present invention is not limited to this, and may be a fluidized bed gasification furnace or a fixed bed gasification furnace, for example. The coal gasification furnace 14 is provided with a gas generation line 49 of the generated gas 11A toward the char recovery device 50, and the generated gas 11A including the char 55 can be discharged. In this case, a gas cooler may be separately provided in the gas generation line 49 so that the generated gas 11A is cooled to a predetermined temperature and then supplied to the char recovery device 50.

  The char recovery device 50 includes a separation means 51 for separating the unreacted char 55 of the pulverized coal 31 in the product gas 11A, a char bin 52 for recovering the separated char 55, and a char supply hopper for the recovered char 55. And a char discharge line 56 for conveying the char 55 from the char supply hopper 53 to the coal gasification furnace 14 side.

  Separation means 51 is constituted by one or a plurality of bag filters or cyclones, and can separate char 55 contained in product gas 11 </ b> A produced in coal gasification furnace 14. The product gas 11B from which the char 55 has been separated is sent to the gas purification device 16 through the gas discharge line 59. The char supply hopper 53 stores the char 55 separated from the product gas 11 </ b> A by the separation means 51. The char discharge line 56 from the char supply hopper 53 is connected to the second nitrogen supply line 45.

The gas purifier 16 purifies the product gas 11B from which the char 55 has been separated by the char recovery device 50 by removing impurities such as sulfur compounds and nitrogen compounds. Then, the gas purification device 16 purifies the produced gas 11B from which the char 55 has been separated to produce the fuel gas 11C, and supplies this to the gas turbine equipment 17. In this gas purification device 16, since the sulfur component (H ₂ S) is still contained in the product gas 11B from which the char 55 has been separated, the sulfur component is removed by, for example, amine absorption liquid. Finally, it is recovered as gypsum and used effectively.

  The gas turbine equipment 17 includes a compressor 61, a combustor 62, and a turbine 63, and the compressor 61 and the turbine 63 are connected by a rotating shaft. The combustor 62 has a compressed air supply line 65 connected to the compressor 61, a fuel gas supply line 66 connected to the gas purifier 16, and a combustion gas supply line 67 connected to the turbine 63. Further, the gas turbine facility 17 is provided with a compressed air supply line 41 extending from the compressor 61 to the coal gasification furnace 14, and a booster 68 is provided in the middle. Therefore, in the combustor 62, the compressed air 37 supplied from the compressor 61 and the fuel gas 80 supplied from the gas purification device 16 are mixed and burned, and the rotating shaft is rotated by the generated combustion gas 80 in the turbine 63. The generator 19 can be driven by rotating.

  The steam turbine facility 18 includes a turbine 69 that is coupled to a rotation shaft in the gas turbine facility 17, and the generator 19 is coupled to a base end portion of the rotation shaft. The exhaust heat recovery boiler 20 is provided in the exhaust gas line 70 from the gas turbine equipment 17 (the turbine 63), and generates steam 82 by exchanging heat between the air and the high temperature exhaust gas 81. is there. Therefore, the exhaust heat recovery boiler 20 is provided with a steam supply line 71 that supplies steam 82 to and from the turbine 69 of the steam turbine equipment 18, and is provided with a steam recovery line 72. A vessel 73 is provided. Therefore, in the steam turbine facility 18, the turbine 69 is driven by the steam 82 supplied from the exhaust heat recovery boiler 20, and the generator 19 can be driven by rotating the rotating shaft.

  The exhaust gas 83 whose heat has been recovered by the exhaust heat recovery boiler 20 is released from the chimney 75 to the atmosphere.

  Here, the operation of the gasifier system 10 of the present embodiment will be described.

  In the gasifier system 10 of the present embodiment, the pulverized coal 31 stored in the pulverized coal bunker 32 is supplied to the coal gasifier 14 by nitrogen supplied from the air separation device 42. Further, the char 55 recovered by the char recovery device 50 to be described later is supplied to the coal gasification furnace 14 by nitrogen supplied from the air separation device 42. Further, compressed air 37 extracted from a gas turbine facility 17 to be described later is pressurized by a booster 68 and then supplied to the coal gasifier 14 through the compressed air supply line 41 together with oxygen supplied from the air separation device 42. .

  In the coal gasification furnace 14, the supplied pulverized coal 31 and char 55 are combusted by compressed air (oxygen) 37, and the pulverized coal 31 and char 55 are gasified, thereby generating a gas 11 </ b> A containing carbon dioxide as a main component. Can be generated. The generated gas 11 </ b> A is discharged from the coal gasification furnace 14 through the gas generation line 49 and sent to the char recovery device 50.

  In the char recovery device 50, the product gas 11A is first supplied to the separation means 51, and the char 55 contained in the product gas 11A is separated. The product gas 11B from which the char 55 has been separated is sent to the gas purification device 16 through the gas discharge line 59. On the other hand, the fine char 55 separated from the product gas 11A is deposited on the char supply hopper 53 via the char bin 52, and returned to the coal gasifier 14 for recycling.

  The product gas 11B from which the char 55 has been separated by the char recovery device 50 is subjected to gas purification by removing impurities such as sulfur compounds and nitrogen compounds in the gas purification device 16 to produce fuel gas 11C. In the gas turbine equipment 17, the compressor 61 generates compressed air 37 and supplies it to the combustor 62. The combustor 62 mixes the compressed air 37 supplied from the compressor 61 and the fuel gas 11C supplied from the gas purification device 16 and combusts to generate a combustion gas 80. By driving the turbine 63, the generator 19 can be driven through the rotating shaft to generate power.

  Then, the exhaust gas 81 discharged from the turbine 63 in the gas turbine equipment 17 generates steam 82 by exchanging heat with air in the exhaust heat recovery boiler 20, and the generated steam 82 is supplied to the steam turbine equipment 18. Supply. In the steam turbine facility 18, the turbine 69 is driven by the steam 82 supplied from the exhaust heat recovery boiler 20, whereby the generator 19 can be driven via the rotating shaft to generate power.

  Thereafter, the exhaust gas 83 discharged from the exhaust heat recovery boiler 20 is released from the chimney 75 to the atmosphere.

FIG. 2 shows a cross-sectional view of the char supply hopper according to the present embodiment.
As shown in FIG. 2, the char supply hopper 53 includes a char supply hopper main body 53a for supplying the separated char 55 to the coal gasification furnace 14 side, and a first sheath inserted from the side wall of the char supply hopper main body 53a. A tube 121, a radiation source 101 that radiates γ rays to the inside of the char supply hopper body 53a, and a vertical axis direction of the first sheath tube 121, provided in the first sheath tube 121; It has the 2nd sheath tube 122 inserted from the side wall of the char supply hopper main body 53a, and the gamma-ray detector 102 provided in this 2nd sheath tube 122 and detecting the irradiated gamma ray.
In addition, the 1st and 2nd sheath pipes 121 and 122 are each installed in the nozzle stand 123 provided in the side wall of the char supply hopper main body 53a.

As shown in FIG. 3, a radiation source unit 101 having a radiation source 101 a is inserted into the first sheath tube 121.
As shown in FIG. 4, the γ-ray detector 102 having the detection unit 102 a is inserted into the second sheath tube 122.

  A level meter for detecting a powder layer level in the sheath pipes 121 and 122 by installing first and second sheath pipes 121 and 122 for shielding a plurality of pressures in the vertical axis direction in the char supply hopper main body 53a. As shown, a radiation source unit 101 having a radiation source 101a that emits γ-rays and a γ-ray detector 102 having a detection unit 102a that detects γ-rays are installed.

A plurality of radiation source units 101 and γ-ray detectors 102 may be installed according to the level range (height) of the char 55.
That is, when the level range is small, a set of the source unit 101 and the γ detector 102 may be used.
When the level range is large, as shown in FIG. 3, the radiation source portion 101 having the upper and lower emission holes is installed (in this case, the radiation hole 101b that opens only in the vertical axis direction centering on the radiation source 101a is formed) Alternatively, as shown in FIG. 2, a plurality of radiation sources such as a radiation source portion 101 is further provided in the vertical direction of the configuration of the γ-ray detector 102, the radiation source portion (having emission holes vertically) 101, and the γ-ray detector 102. A unit 101 and a γ detector 102 may be provided.

  A plurality of nozzles 123 are installed in the vertical direction on the side of the container of the char supply hopper main body 53a, the first and second sheath pipes 121 and 122 are provided on the nozzle base 123, and the wires provided inside the sheath pipes 121 and 122 By installing a plurality of level meters composed of the source unit 101 and the γ-ray detector 102, the level of the char 55 can be measured without contact.

  A γ ray is emitted from the radiation source unit 101 toward the γ ray detector 102, and when the γ ray enters the γ ray detector 102, it is detected as an electric signal. At this time, when the char 55 is present between the radiation source unit 101 and the γ-ray detector 102, the density of γ-ray transmission varies depending on the amount of the char 55. The powder layer level of the char 55 is measured using the density difference due to the transmission of γ rays according to the amount of the char 55.

  Here, for example, when the first sheath tube 121 has a cylindrical shape, when the amount of the char 55 stored in the char supply hopper 53 moves downward from above the corresponding first sheath tube 121, FIG. As shown, the char 55 may be deposited on the upper portion of the first sheath tube 121. At this time, the accumulated char 55 hinders accurate volume measurement, for example, it is erroneously measured that the char 55 is stored up to the upper portion of the first sheath 121 even though the amount of the char 55 is small. As a result, it is impossible to correctly grasp the amount of retained char, and it becomes impossible to perform a quantitative supply of the char 55, which makes stable operation difficult. As a result, the gasifier system 10 may be stopped.

Therefore, in the present embodiment, the cross sections of the sheath tubes 121 and 122 are formed to have a tapered portion 200 having an apex angle at the upper end as shown in FIG.
More specifically, assuming that there are virtual cylinders, the sheath tubes 121 and 122 have two tangential planes (side surfaces 201 of the tapered portion 200 in FIG. 6) in the circumferential direction of the cylinders, and intersecting lines of the tangential planes. Is a shape in which the tapered portion 200 whose intersection line is above the apex of the cylinder and the virtual cylinder shown above are combined.
FIG. 6A shows a case where the apex angle of the tapered portion 200 of the first sheath tube 121 is in the center vertical axis direction when the first sheath tube 121 is a cylinder, that is, the tapered portion 200 is vertical. 6 (b) is a modified example of FIG. 6 (a), and the apex angle of the tapered portion of the first sheath tube 121 is the center when the first sheath tube 121 is a cylinder. This is a case where it is in a direction other than the vertical axis direction, that is, it is eccentric.
Angles β ₁ , β ₂ , β ₃ , β ₄ formed by the side surface 201 of the tapered portion 200 in FIGS. 6A and 6B with respect to the horizontal plane are equal to or more than the repose angle, and the apex of the tapered portion 200 is the first. When the one-sheath tube 121 is a cylinder, it is above the top of the cylinder.
Moreover, the shape of FIG. 6 (a) and (b) is continuously provided in the part inserted in the char supply hopper 53 of the sheath tubes 121 and 122 at least.
Since the first sheath tube 121 has the shape as described above, the char 55 positioned at the upper portion of the first sheath tube 121 has the apex angle provided at the upper end of the first sheath tube 121. Since it cannot stay at the upper end of 121 and is tapered, the char 55 cannot slide on the first sheath tube 121 and slides down.

As described above, according to the char supply hopper, the char recovery device, and the gasification furnace system according to the present embodiment, the char 55 is prevented from being deposited on the tapered portion 200 of the sheath pipes 121 and 122 in advance. Therefore, since accurate volume measurement can be performed without being interrupted by the char 55, stable operation can be continued.
Further, since the angle formed by the side surface 201 of the tapered portion 200 with respect to the horizontal plane is an angle greater than the angle of repose when the char 55 is deposited, the char 55 is prevented from being deposited on the side surface 201 of the tapered portion 200. be able to.
In the present embodiment, the description is limited to the first sheath tube 121, but the first sheath tube 121 may be the second sheath tube 122.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
In the first reference embodiment described above, the sheath pipes 121 and 122 are provided with a tapered portion having an apex angle at the upper end in order to prevent the char 55 from being deposited. However, in the present embodiment, a char removing unit is provided. Is. Since other points are the same as those in the first embodiment, the description thereof is omitted.

FIG. 7 shows a schematic configuration diagram of a transverse cross section of the sheath tube and the vicinity thereof according to the present embodiment.
A nozzle 301 is provided between the second sheath tube 122 and the nozzle base 123 above the top of the cylinder of the second sheath tube 122. One end of the nozzle 301 is connected to the inert gas system of the gasifier system 10, and the injection port at the other end extends to the inside of the char supply hopper main body 53a. Here, in this embodiment, the inert gas is nitrogen (N ₂ ).
Pressurized nitrogen is sprayed from the nozzle 301 to the upper part of the cylinder of the second sheath tube 122. The char 55 on the upper portion of the second sheath tube 122 is blown off by the injected pressurized nitrogen.

[Modification of First Embodiment]
Hereinafter, a modification of the first embodiment of the present invention will be described with reference to FIG.
In the first embodiment described above, the nozzle 301 serving as the char removing portion extends to the inside of the char supply hopper main body 53a between the second sheath tube 122 and the nozzle base 123. The position of 301 is different. Specifically, as shown in FIG. 8, the nozzle 301 includes an injection port at a base end portion 123 a of the nozzle base 123, that is, an end portion opposite to the inner side of the char supply hopper 53.
Further, two guides 302 are provided in parallel on the circumference of the second sheath tube 122 so as to rise from the circumference. These two guides 302 are provided so as to form a flow path that guides the inert gas injected from the injection port of the nozzle 301 to the inside of the char supply hopper main body 53a. Each guide 302 is installed in a direction along the central axis of the second sheath tube 122 between the base end portion 123a of the nozzle base 123 and the char supply hopper main body 53a.
From the nozzle 301, an inert gas such as nitrogen is injected to the upper part of the cylinder of the second sheath tube 122. The injected inert gas flows along the guide 302 to the inside of the char supply hopper main body 53a, and blows off the char 55 at the upper part of the second sheath tube 122.

As described above, according to the char supply hopper, the char recovery device, and the gasification furnace system according to the present embodiment and the modified example, the inert gas injected from the nozzle 301 causes the upper portions of the sheath tubes 121 and 122 to be formed. Since the deposited char 55 can be removed, it is possible to prevent the char 55 from being deposited on the sheath tubes 121 and 122. Therefore, accurate volume measurement can be performed and stable operation can be continued.
Even if the char 55 is deposited, the char 55 can be removed by the inert gas sprayed from the nozzle 301.

Further, since the inert gas used in the gasification furnace system 10 is injected from the nozzle 301, the char 55 deposited on the sheath tubes 121 and 122 can be removed by injection of the inert gas. Further, since the inert gas used in the gasifier system 10, for example, nitrogen used as a conveying gas for the pulverized coal 31 and the char 55 is used, it is not necessary to newly provide a facility for the injection gas, and it is easy. It can be introduced. Further, it is desirable that the inside of the char supply hopper 53 is in a pressurized state for the stable supply of the char 55, but an inert gas, particularly nitrogen, is injected into the inside to prevent the char 55 from being deposited. Pressurization is possible at the same time.
In addition, according to the char supply hopper, the char recovery device, and the gasification furnace system according to this modification, the gap between the second sheath tube 122 and the nozzle base 123 is narrow, and the nozzle 301 cannot be provided. Even in the case of providing the base end portion 123a, the same effect as that of the first embodiment can be obtained by providing the guide 302 in the second sheath tube 122.
In the present embodiment, the second sheath tube 122 is described as being limited to the second sheath tube 122, but the first sheath tube 121 may be used.

[Second embodiment]
Hereinafter, a second reference embodiment of the present invention will be described.
In the first embodiment described above, the nozzle 301 for injecting the inert gas is provided above the sheath tubes 121 and 122 in order to prevent the char 55 from being deposited. However, in the present embodiment, the sheath tubes 121 and 122 can be rotated. It is to be configured. Since other points are the same as those in the first embodiment, description thereof will be omitted.

For example, when the sheath tubes 121 and 122 are cylindrical, when the amount of the char 55 stored in the char supply hopper 53 moves from above the corresponding sheath tubes 121 and 122 downward, as shown in FIG. In some cases, char 55 is deposited.
Therefore, in the present embodiment, the second sheath tube 122 can be rotated around the central axis A as shown in FIG.
The char 55 does not accumulate on the second sheath tube 122 and slides down by a method of always rotating, periodically rotating, or rotating before measurement. As for the rotation, any means may be used such as an operator manually rotating the apparatus and a rotation apparatus and a control apparatus separately provided.

As described above, according to the char supply hopper, the char recovery device, and the gasification furnace system according to the present embodiment, the sheath tubes 121 and 122 can rotate around the central axis A. Even if the char 55 is deposited on the upper part of the 121, 122, it is possible to remove the char deposited on the upper part by sliding it, and to prevent the char 55 from being deposited on the upper part of the sheath tubes 121, 122. Can do. Therefore, accurate volume measurement can be performed and stable operation can be continued.
Further, even if the char 55 has accumulated, the char 55 can be removed by the rotation of the sheath tubes 121 and 122.
In the present embodiment, the description is limited to the second sheath tube 122, but the second sheath tube 122 may be the first sheath tube 121.

DESCRIPTION OF SYMBOLS 10 Gasification furnace system 14 Coal gasification furnace 50 Char collection | recovery apparatus 53 Char supply hopper 53a Char supply hopper main body 55 Char 101 Radiation source part 102 Gamma ray detector 121 1st sheath tube 122 2nd sheath tube 123 Nozzle 301 Nozzle ( Char removal means)
302 Guide

Claims (3)

A char supply hopper body for supplying the separated char to the gasifier;
Two or more sheath tubes inserted from the side wall of the char supply hopper main body and provided in alignment with each other in the vertical axis direction;
A radiation source unit that is provided in one of the sheath pipes and that irradiates γ rays inside the char supply hopper body;
A gamma ray detector provided in the other sheath tube and detecting the irradiated gamma rays;
A nozzle provided with an injection port at a base end opposite to the inner side of the char supply hopper main body of a nozzle provided on a side wall of the char supply hopper main body;
The char supply hopper main body is provided with two inert gases that are arranged in parallel in a direction along the central axis of the sheath tube so as to rise from the circumference on the circumference of the sheath tube, and injected from the nozzle therebetween And a guide that forms a flow path leading to the inside of the
A char supply hopper in which the inert gas injected from the nozzle flows along between the guides and blows off the char accumulated on the upper portion of the sheath tube.   A char collection device comprising the char supply hopper according to claim 1. A gasifier system comprising the char recovery device according to claim 2.

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