CN112880834B

CN112880834B - High-temperature detection method and detection system for activated carbon in front of adsorption tower

Info

Publication number: CN112880834B
Application number: CN202110045145.3A
Authority: CN
Inventors: 陈思墨; 周浩宇; 刘雁飞; 王业峰; 刘前; 李谦
Original assignee: Zhongye Changtian International Engineering Co Ltd
Current assignee: Zhongye Changtian International Engineering Co Ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2022-12-06
Anticipated expiration: 2041-01-13
Also published as: CN112880834A

Abstract

A high-temperature detection method for activated carbon in front of an adsorption tower comprises the following steps: 1a) The method comprises the following steps that a first thermal imaging instrument (1) shoots materials entering an imaging area I (3) of a vibrating screen (2) in real time to obtain a thermal imaging image; 2a) Analyzing and judging whether the material entering the imaging area I (3) has a high-temperature point or not according to the thermal imaging image; 2a1) If the thermal imaging image does not have the high temperature point, repeating the step 1); 2a2) And if the thermal imaging image is judged to have a high temperature point, recording the found position of the material at the high temperature point in the imaging area I (3) of the vibrating screen (2) and giving an alarm. Because the active carbon particles at the falling section at the tail part of the vibrating screen are in a parabolic shape, the active carbon particles are more dispersed than other positions during falling, the active carbon particles at the bottom layer are shielded by the active carbon particles at the surface layer to the minimum, and the detection and the recognition of the active carbon particles are easier by a thermal imager, namely, the invention can detect all the active carbon particles more comprehensively, and avoid missing detection.

Description

High-temperature detection method and detection system for activated carbon in front of adsorption tower

Technical Field

The invention relates to detection of high-temperature activated carbon particles in an activated carbon flue gas purification device, in particular to a method and a system for detecting the high temperature of activated carbon in front of an adsorption tower, and belongs to the technical field of activated carbon flue gas purification.

Background

The amount of flue gas generated in the sintering process accounts for about 70 percent of the total flow of steel, and the main pollutant components in the sintering flue gas are dust and SO ₂ 、NO _X (ii) a In addition, a small amount of VOCs, dioxin, heavy metals and the like are also added; need to be purifiedCan be discharged outside after being treated. At present, the technology of treating sintering flue gas by using an activated carbon desulfurization and denitrification device is mature, and the activated carbon desulfurization and denitrification device is popularized and used in China, so that a good effect is obtained.

The working schematic diagram of the activated carbon desulfurization and denitrification device in the prior art is shown in fig. 1: raw flue gas (SO is the main component of pollutant) generated in the sintering process ₂ ) The flue gas is discharged as clean flue gas after passing through an active carbon bed layer of the adsorption tower; adsorbing pollutants (the main component of the pollutants is SO) in the flue gas ₂ ) The activated carbon is conveyed into an analysis tower through an activated carbon conveyor S1, the activated carbon with pollutants adsorbed in the analysis tower is heated to 400-430 ℃ for analysis and activation, SRG (sulfur-rich) gas released after the analysis and activation is subjected to an acid making process, the activated carbon after the analysis and activation is cooled to 110-130 ℃ and then discharged out of the analysis tower, activated carbon dust is screened out by a vibrating screen, and the activated carbon particles on the screen reenter the adsorption tower through an activated carbon conveyor S2; fresh activated carbon is added to the conveyor S1 (the activated carbon used in the activated carbon flue gas cleaning device is cylindrical activated carbon particles with typical sizes: 9mm in diameter and 11mm in height).

As shown in figure 1, the activated carbon is heated to 400-430 ℃ in the desorption tower, and the burning point temperature of the activated carbon used by the activated carbon flue gas purification device is 420 ℃; the analytical column was of gas-tight construction and was filled with nitrogen.

The schematic structure of the prior art analytic tower is shown in fig. 2: the active carbon is not contacted with air in the desorption tower so as to ensure that the active carbon is not burnt in the desorption tower; in the process of heating and cooling the activated carbon in the desorption tower, occasionally, a small amount of heated activated carbon particles are not sufficiently cooled in the cooling section, and a small amount of high-temperature activated carbon particles which are not cooled to a safe temperature are discharged from the desorption tower (the amount of activated carbon particles filled in the desorption tower of the sintering flue gas purification device exceeds hundreds of tons, and the processes of flowing, cooling, heating, heat conduction and the like of the activated carbon particles in the desorption tower are complicated). The high-temperature activated carbon particles are discharged from the desorption tower and then contact with air, spontaneous combustion (smoldering and flameless) can occur, a small amount of high-temperature activated carbon particles of the spontaneous combustion can possibly ignite low-temperature activated carbon particles around the high-temperature activated carbon particles, the high-temperature activated carbon particles of the spontaneous combustion can enter each link of the flue gas purification device along with the circulation of the activated carbon, the safe and stable operation of the sintering activated carbon flue gas purification system is threatened, and the sintering activated carbon flue gas purification device has the requirement of detecting and disposing the high-temperature spontaneous combustion activated carbon particles. As shown in fig. 1, the sintered activated carbon flue gas purification device circulates between the desorption tower and the adsorption tower, and all links such as the desorption tower, the adsorption tower, the conveyor, the vibrating screen, the buffer bin and the like are all airtight structures.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a method and a system for detecting the high temperature of activated carbon in front of an adsorption tower. According to the invention, a first thermal imager is arranged above a cover plate at the tail part of the vibrating screen, and the first thermal imager shoots materials entering an imaging area I at the tail part of the vibrating screen to obtain a thermal imaging image. The second thermal imaging instrument is arranged above the discharging guide pipe connected with the discharging opening of the conveyor, and the second thermal imaging instrument shoots the material entering the discharging guide pipe imaging area II to obtain a thermal imaging image. And analyzing and judging whether the material entering the vibrating screen or the discharging guide pipe has a high-temperature point or not according to the thermal imaging image, and determining the found position of the material at the high-temperature point and giving an alarm. According to the invention, the thermal imager is adopted to carry out high-temperature detection on the activated carbon at a plurality of positions such as the falling section at the tail part of the vibrating screen, the discharging guide pipe and the like, and accurate high-temperature point data is obtained through analysis and judgment of the thermal imaging image, so that the problems of inaccurate detection and incomplete detection of high-temperature activated carbon particles in the activated carbon flue gas purification device are solved, and the safety of the system is improved.

According to a first embodiment of the invention, a method for high temperature detection of activated carbon before an adsorption tower is provided.

A high-temperature detection method for activated carbon in front of an adsorption tower comprises the following steps:

1a) The method comprises the following steps that a first thermal imager shoots materials entering a vibrating screen imaging area I in real time to obtain a thermal imaging image;

2a) Analyzing and judging whether the material entering the imaging area I has a high temperature point or not according to the thermal imaging image;

2a1) If the thermal imaging image does not have the high temperature point, repeating the step 1);

2a2) And if the thermal imaging image is judged to have a high temperature point, recording the found position of the material at the high temperature point in the imaging area I of the vibrating screen and giving an alarm.

In the invention, the vibrating screen is provided with the cover plate, and the material entering the vibrating screen moves along the length direction of the vibrating screen. Preferably, the imaging area I is arranged at the tail part of the vibrating screen. The imaging I area comprises a first imaging area and a second imaging area, and the first imaging area is located at the upstream of the second imaging area.

In step 1 a), the first thermal imager shoots the material entering the vibrating screen imaging area I in real time to obtain a thermal imaging image, and the thermal imaging image is specifically as follows:

1a1) A first light shield is arranged on a cover plate at the tail part of the vibrating screen, and a first thermal imaging camera is arranged at the top of the first light shield.

1a2) The first thermal imaging system swings back and forth around a base point which is the connection position of the first thermal imaging system and the first light shield. The first thermal imaging instrument shoots materials entering a first imaging area and/or a second imaging area at the tail of the vibrating screen in real time to obtain a primary thermal imaging image and/or a secondary thermal imaging image.

In the invention, in step 2 a), whether the material entering the imaging region I has a high temperature point is judged according to the thermal imaging image analysis, and the method specifically comprises the following steps:

the first thermal imager shoots the material entering the first imaging area at the tail part of the vibrating screen in real time to obtain a primary thermal imaging image. And acquiring the highest temperature value T1 in the primary thermal imaging image, and comparing the highest temperature value T1 with the set target temperature T0. And if the T1 is not more than T0, judging that the primary thermal imaging image does not have a high-temperature point, and repeating the step 1 a). And if T1 is larger than T0, judging that the primary thermal imaging image has a suspected high-temperature point. Preferably, T0 is in the range of 390 to 425 deg.C, preferably 400 to 420 deg.C.

When the primary thermal imaging image is judged to have the suspected high-temperature point, the first thermal imaging instrument tracks and shoots a secondary thermal imaging image of the material at the suspected high-temperature point entering the second imaging area at the tail part of the vibrating screen, and whether the suspected high-temperature point is the high-temperature point is further judged.

Dividing the secondary thermal imaging image into n areas, obtaining the highest temperature of each of the n areas, selecting the highest temperature value T2 of the n highest temperatures, and comparing the highest temperature value T2 with a set target temperature T0. If T2 is less than or equal to T0, judging the suspected high-temperature point as a false high-temperature point, and repeating the step 1 a). And if T2 is larger than T0, confirming that the suspected high temperature point is the high temperature point. And determining and recording the found position of the material at the high temperature point in a second imaging area at the tail part of the vibrating screen by the area of the highest temperature value T2 corresponding to the secondary thermal imaging image.

Preferably, a first dustproof cooling protection cover is further arranged on the top of the first light shield. The first thermal imager is mounted within a first dust-tight, cooling protective cover. The first thermal imaging system and the first dustproof cooling protection cover do reciprocating swing around the base point by taking the connecting position of the first dustproof cooling protection cover and the first shading cover as the base point.

Preferably, a cooling medium is introduced into the first dustproof cooling protection cover, and the cooling medium is ejected from the first dustproof cooling protection cover into the first shade. Preferably, the cooling medium is one of compressed air, water and nitrogen. Preferably, a black coating is provided on an inner wall of the first light shield.

Preferably, a first opening is formed in the cover plate at the tail of the vibrating screen. The first light shield is positioned at the upper part of the first opening. The width of the first openings is equal or substantially equal to the width of the shaker.

In the invention, a first dust removal air port and a second dust removal air port are also arranged on the cover plate of the vibrating screen. The first dust removal air opening is located at the upstream of the first light shield. The second dust removal air opening is positioned at the downstream of the first light shield. Preferably, the second dust removal air opening is obliquely arranged on an end plate at the tail part of the vibrating screen. And the dust removal device removes dust on the materials on the vibrating screen through the first dust removal air opening and/or the second dust removal air opening.

Preferably, the first thermal imager is connected with a data processing module, and the data processing module is connected with a main process computer control system. And when the thermal imaging image is judged to have a high temperature point, the data processing module gives an alarm to the main process computer control system.

According to a second embodiment of the invention, a method for high temperature detection of activated carbon before an adsorption tower is provided.

1b) The second thermal imager shoots the material entering the discharge conduit imaging area II connected with the discharge opening of the conveyor in real time to obtain a thermal imaging image;

2b) Analyzing and judging whether the material entering the imaging area II has a high-temperature point or not according to the thermal imaging image;

2b1) If the thermal imaging image does not have the high temperature point, repeating the step 1);

2b2) And if the thermal imaging image is judged to have a high temperature point, recording the found position of the material at the high temperature point in the discharge guide pipe imaging area II and giving an alarm.

In the invention, the discharge conduit comprises an inclined section and a vertical section, and the material entering the discharge conduit sequentially passes through the inclined section and the vertical section of the discharge conduit. Preferably, the imaging II zone is disposed within the angled section of the discharge conduit. The imaging zone II comprises a third imaging zone and a fourth imaging zone, and the third imaging zone is positioned upstream of the fourth imaging zone.

In step 1 b), the second thermal imager shoots the material entering the second area of the discharge conduit connected with the discharge opening of the conveyor in real time to obtain a thermal imaging image, which specifically comprises:

1b1) A second light shield is arranged on the upper edge of the inclined section of the discharge guide pipe, and a second thermal imager is arranged at the top of the second light shield;

1b2) And taking the connecting position of the second thermal imaging system and the second light shield as a base point, and the second thermal imaging system swings back and forth around the base point. And the second thermal imaging instrument shoots the materials entering the third imaging area and/or the fourth imaging area of the inclined section of the discharge guide pipe in real time to obtain three times of thermal imaging images and/or four times of thermal imaging images.

In the invention, in step 2 b), whether the material entering the imaging area II has a high temperature point is judged according to the thermal imaging image analysis, and the method specifically comprises the following steps:

and the second thermal imager shoots the material entering a third imaging area in the inclined section of the discharge guide pipe in real time to obtain a three-time thermal imaging image. And acquiring the highest temperature value T3 in the three thermal imaging images, and comparing the highest temperature value T3 with the set target temperature T0. And if the T3 is not more than T0, judging that the three thermal imaging images do not have high temperature points, and repeating the step 1 b). And if T3 is larger than T0, judging that the three thermal imaging images have suspected high-temperature points. Preferably, T0 is in the range of 390 to 425 ℃, preferably 400 to 420 ℃.

When the suspected high-temperature point exists in the three thermal imaging images, the second thermal imaging instrument tracks and shoots the four thermal imaging images of the material at the suspected high-temperature point entering a fourth imaging area in the inclined section of the discharging guide pipe, and whether the suspected high-temperature point is the high-temperature point is further judged.

Dividing the four thermal imaging images into n areas, obtaining the highest temperature of each of the n areas, selecting the highest temperature value T4 of the n highest temperatures, and comparing the highest temperature value T4 with a set target temperature T0. If T4 is less than or equal to T0, the suspected high temperature point is judged to be a false high temperature point, and the step 1 b) is repeated. And if T4 is larger than T0, confirming that the suspected high temperature point is the high temperature point. The highest temperature value T4 corresponds to the area on the four thermal imaging images, so that the found position of the material at the high-temperature point in a fourth imaging area in the inclined section of the discharge guide pipe is determined and recorded.

Preferably, a second dustproof cooling protection cover is further arranged on the top of the second light shield. And the second thermal imager is arranged in the second dustproof and cooling protective cover. And taking the connecting position of the second dustproof cooling protection cover and the second light shield as a base point, and reciprocating swinging the second thermal imaging system and the second dustproof cooling protection cover around the base point.

Preferably, a cooling medium is introduced into the second dustproof cooling protection cover, and the cooling medium is ejected from the second dustproof cooling protection cover into the second light shield. Preferably, the cooling medium is one of compressed air, water and nitrogen. Preferably, a black coating is provided on an inner wall of the second light shield.

Preferably, the upper edge of the inclined section of the discharge conduit is provided with a second opening. The second light shield is positioned at the upper part of the second opening. The width of the second opening is equal or substantially equal to the width of the discharge conduit. That is, the upper surface of the discharge conduit at the inclined section portion is provided with a second opening having the same width as the discharge conduit.

In the invention, the upper edge of the inclined section of the discharge conduit is also provided with a third dust removal air port and a fourth dust removal air port. The third dust removal air opening is positioned at the upstream of the second light shield. The fourth dust removal air opening is positioned at the downstream of the second light shield. And the dust removal device removes dust for the materials in the discharge guide pipe through the third dust removal air opening and/or the fourth dust removal air opening.

Preferably, the second thermal imager is connected with a data processing module, and the data processing module is connected with a main process computer control system. And when the thermal imaging image is judged to have a high temperature point, the data processing module gives an alarm to a main process computer control system.

According to a third embodiment of the invention, a method for high temperature detection of activated carbon before an adsorption tower is provided.

2a2) If the thermal imaging image is judged to have a high temperature point, recording the found position of the material at the high temperature point in the vibrating screen imaging area I and giving an alarm;

2b) Analyzing and judging whether the material entering the imaging area II has a high temperature point or not according to the thermal imaging image;

In the invention, the vibrating screen is provided with the cover plate, and the material entering the vibrating screen moves along the length direction of the vibrating screen. Preferably, the imaging area I is arranged at the tail part of the vibrating screen; the imaging I area comprises a first imaging area and a second imaging area, and the first imaging area is located at the upstream of the second imaging area.

1a1) A first light shield is arranged on a cover plate at the tail part of the vibrating screen, and a first thermal imager is arranged at the top of the first light shield;

1a2) The first thermal imaging system swings back and forth around a base point which is the connection position of the first thermal imaging system and the first light shield. The first thermal imaging instrument shoots materials entering a first imaging area and/or a second imaging area at the tail part of the vibrating screen in real time to obtain a primary thermal imaging image and/or a secondary thermal imaging image.

In the invention, the discharge conduit comprises an inclined section and a vertical section, and the material entering the discharge conduit sequentially passes through the inclined section and the vertical section of the discharge conduit. Preferably, the imaging II zone is disposed within the angled section of the discharge conduit. The second imaging area comprises a third imaging area and a fourth imaging area, and the third imaging area is located at the upstream of the fourth imaging area.

In the invention, in step 2 a), whether the material entering the imaging region I has a high temperature point is judged according to the thermal imaging image analysis, specifically:

the first thermal imager shoots the material entering the first imaging area at the tail part of the vibrating screen in real time to obtain a primary thermal imaging image. And acquiring the highest temperature value T1 in the primary thermal imaging image, and comparing the highest temperature value T1 with the set target temperature T0. And if the T1 is not more than T0, judging that the primary thermal imaging image does not have a high-temperature point, and repeating the step 1 a). And if T1 is larger than T0, judging that the primary thermal imaging image has a suspected high-temperature point. Preferably, T0 is in the range of 390 to 425 ℃, preferably 400 to 420 ℃.

Dividing the secondary thermal imaging image into n areas, obtaining the highest temperature of each of the n areas, selecting the highest temperature value T2 of the n highest temperatures, and comparing the highest temperature value T2 with a set target temperature T0. If T2 is less than or equal to T0, the suspected high temperature point is judged to be a false high temperature point, and the step 1 a) is repeated. And if T2 is larger than T0, confirming that the suspected high temperature point is the high temperature point. And determining and recording the found position of the material at the high-temperature point in a second imaging area at the tail part of the vibrating screen by the area of the highest temperature value T2 corresponding to the secondary thermal imaging image.

and the second thermal imager shoots the material entering a third imaging area in the inclined section of the discharge guide pipe in real time to obtain a three-time thermal imaging image. And acquiring the highest temperature value T3 in the three thermal imaging images, and comparing the highest temperature value T3 with the set target temperature T0. And if the T3 is not more than T0, judging that the three thermal imaging images do not have high temperature points, and repeating the step 1 b). And if T3 is more than T0, judging that the three thermal imaging images have suspected high-temperature points. Preferably, T0 is in the range of 390 to 425 ℃, preferably 400 to 420 ℃.

When the suspected high-temperature point is found in the three thermal imaging images, the second thermal imaging instrument tracks and shoots the four thermal imaging images of the material at the suspected high-temperature point entering a fourth imaging area in the inclined section of the discharge guide pipe, and whether the suspected high-temperature point is the high-temperature point is further judged.

Preferably, a second dustproof cooling protection cover is further arranged at the top of the second light shield. And the second thermal imager is arranged in the second dustproof and cooling protective cover. And taking the connecting position of the second dustproof cooling protective cover and the second light shield as a base point, and the second thermal imaging system and the second dustproof cooling protective cover perform reciprocating swing around the base point.

Preferably, the upper edge of the inclined section of the discharge conduit is provided with a second opening. The second light shield is positioned at the upper part of the second opening. The width of the second opening is equal or substantially equal to the width of the discharge conduit.

In the invention, a first dust removal air port and a second dust removal air port are also arranged on the cover plate of the vibrating screen. The first dust removal air port is positioned at the upstream of the first light shield; the second dust removal air opening is positioned at the downstream of the first light shield. Preferably, the second dust removal air opening is obliquely arranged on an end plate at the tail part of the vibrating screen. And the dust removal device removes dust on the materials on the vibrating screen through the first dust removal air opening and/or the second dust removal air opening.

In the invention, the upper edge of the inclined section of the discharge conduit is also provided with a third dust removal air port and a fourth dust removal air port. The third dust removal air opening is positioned at the upstream of the second light shield. The fourth dust removal air opening is positioned at the downstream of the second light shield. And the dust removing device removes dust for the materials in the discharging guide pipe through the third dust removing air opening and/or the fourth dust removing air opening.

Preferably, the first thermal imager and the second thermal imager are both connected with a data processing module, and the data processing module is connected with a main process computer control system. And when the thermal imaging image is judged to have a high temperature point, the data processing module gives an alarm to the main process computer control system.

According to a fourth embodiment of the invention, a system for high temperature detection of activated carbon before an adsorption tower is provided.

The system comprises a first thermal imager, a vibrating screen and a first light shield. And a cover plate is arranged on the vibrating screen. The first light shield is arranged on the cover plate at the tail part of the vibrating screen. The first thermal imager is disposed on top of the first light shield. An imaging area I is arranged at the tail of the vibrating screen. A first thermal imaging system shoots materials entering an imaging area I at the tail part of the vibrating screen in real time to obtain a thermal imaging image.

In the invention, the system comprises a second thermal imaging camera, a discharge guide tube connected with the discharge opening of the conveyor, and a second light shield. The discharge conduit includes an inclined section and a vertical section. The second light shield is arranged on the upper edge of the inclined section of the discharge guide pipe. The second thermal imager is disposed on top of the second light shield. An imaging area II is arranged in the inclined section of the discharging guide pipe. And the second thermal imager shoots the material entering the discharge guide pipe imaging area II in real time to obtain a thermal imaging image.

In the invention, the discharge opening of the vibrating screen is connected with the feed inlet of the conveyor, and the discharge opening of the conveyor is connected with the discharge guide pipe. Generally, the activated carbon outlet at the end of the vibrating screen includes an oversize activated carbon outlet and an undersize activated carbon outlet. The active carbon particles with the particle size larger than the sieve pore size of the sieve plate of the vibrating sieve flow out of the active carbon outlet on the sieve and enter the conveyer. The active carbon particles with the particle size smaller than the sieve pore size of the sieve plate enter the loss active carbon collecting system through the active carbon outlet under the sieve and do not enter the active carbon smoke purifying device any more. That is, the discharge opening of the vibrating screen in the present invention refers to the outlet of the activated carbon on the screen of the vibrating screen.

In the invention, the imaging I area comprises a first imaging area and a second imaging area. The first imaging zone is upstream of the second imaging zone at the shaker tail. The first thermal imaging system swings back and forth around a base point which is the connection position of the first thermal imaging system and the first light shield. The first thermal imaging instrument shoots materials entering a first imaging area and/or a second imaging area at the tail part of the vibrating screen in real time to obtain a primary thermal imaging image and/or a secondary thermal imaging image.

Preferably, the system further comprises a first dust and cooling shield disposed atop the first light shield. The first thermal imager is mounted within a first dust-tight, cooling protective cover. The first thermal imaging system and the first dustproof cooling protection cover do reciprocating swing around the base point by taking the connecting position of the first dustproof cooling protection cover and the first shading cover as the base point. Preferably, a black coating is arranged on the inner wall of the first light shield.

In the present invention, the image ii region includes a third image region and a fourth image region. The third imaging zone is located upstream of the fourth imaging zone within the sloped section of the discharge conduit. And taking the connecting position of the second thermal imaging system and the second light shield as a base point, and the second thermal imaging system swings back and forth around the base point. And the second thermal imaging instrument shoots the materials entering the third imaging area and/or the fourth imaging area of the inclined section of the discharge guide pipe in real time to obtain three times of thermal imaging images and/or four times of thermal imaging images.

Preferably, the system further comprises a second dust and cooling shield disposed atop the second light shield. The second thermal imager is mounted within a second dust-tight, cooled protective cover. And taking the connecting position of the second dustproof cooling protection cover and the second light shield as a base point, and reciprocating swinging the second thermal imaging system and the second dustproof cooling protection cover around the base point. Preferably, a black coating is arranged on the inner wall of the second light shield.

Preferably, a first open hole is formed in the cover plate at the tail part of the vibrating screen. The first light shield is positioned at the upper part of the first opening. The width of the first openings is equal or substantially equal to the width of the shaker.

Preferably, the high temperature detection system further comprises a data processing module and a main process computer control system. The first thermal imager and the second thermal imager are both connected with a data processing module, and the data processing module is connected with a main process computer control system. And the main process computer control system controls the operation of the data processing module, the first thermal imager and the second thermal imager.

As shown in fig. 1, the activated carbon flue gas purification device circulates between the desorption tower and the adsorption tower, all links such as the desorption tower, the adsorption tower, the conveyor and the buffer bin are all airtight structures, and activated carbon is in a large amount of gathering states in the above devices, and occasionally appearing high-temperature activated carbon may be surrounded by a group of normal-temperature activated carbon, so that high-temperature activated carbon particles are difficult to detect comprehensively.

In the activated carbon flue gas purification device, activated carbon circulates between an analysis tower and an adsorption tower, and all the activated carbon needs to be screened out by a vibrating screen in the circulation. The active carbon powder screening is a subsequent process of a desorption tower (a high-temperature heating link), and active carbon particles are in a rolling and flat-spreading state on a vibrating screen. Therefore, the high-temperature activated carbon particles (or the spontaneous combustion activated carbon) are detected in the activated carbon screening link, and the high-temperature activated carbon particles in the activated carbon flue gas purification process can be found more favorably.

The application provides a high-temperature detection method for activated carbon in front of an adsorption tower, which comprises three implementation schemes. In a first embodiment, a first thermal imaging camera shoots a material entering an imaging area I at the tail part of the vibrating screen to obtain a thermal imaging image; analyzing and judging whether the material entering the imaging area I has a high temperature point or not according to the thermal imaging image; when the high temperature point in the material is confirmed, the found position of the material at the high temperature point in the imaging area I is recorded and an alarm is given. Because the active carbon particles at the falling section of the rear end (namely the tail part) of the vibrating screen are in a parabolic shape, the active carbon particles in the falling process are more dispersed than the upper horizontal section of the vibrating screen, the active carbon particles at the bottom layer are shielded by the active carbon particles at the surface layer to the minimum, and the active carbon particles are more easily detected and identified by the first thermal imaging instrument. Therefore, the first embodiment arranges the first thermal imaging camera above the cover plate at the tail of the vibrating screen, and the thermal imaging system arranged at the position can detect all the activated carbon particles more comprehensively, so as to avoid missing detection.

In a second embodiment, a second thermal imager shoots a material entering an imaging area II of the inclined section of the discharge conduit to obtain a thermal imaging image; analyzing and judging whether the material entering the imaging area II has a high temperature point or not according to the thermal imaging image; and when the high temperature point in the material is confirmed, recording the found position of the material at the high temperature point in the imaging area II and giving an alarm. Similarly, because the activated carbon particles are in a flowing falling state in the inclined section of the discharging guide pipe, the activated carbon particles are more dispersed than other positions during falling, the activated carbon particles at the bottom layer are shielded by the activated carbon particles at the surface layer to the minimum, and the activated carbon particles are detected and identified by the second thermal imaging instrument more easily. In addition, because the active carbon granule whereabouts speed is too fast in the vertical section of pipe of unloading, the second thermal imaging appearance exists the condition that can't come to detect, consequently, the second kind of implementation scheme sets up the second thermal imaging appearance in the top of the pipe slope section of unloading, arranges here that thermal imaging system more can detect all active carbon granules comprehensively, avoids lou examining.

In the third embodiment, a first thermal imaging instrument shoots a material entering an imaging area I at the tail part of the vibrating screen to obtain a thermal imaging image; the second thermal imager shoots the material entering the discharge conduit inclined section imaging area II to obtain a thermal imaging image; analyzing and judging whether the materials entering the imaging area I and the imaging area II have high temperature points or not according to the thermal imaging image; and when the high temperature point in the material is confirmed, recording the found position of the material at the high temperature point in the imaging area I or the imaging area II and giving an alarm. The third embodiment is characterized in that the thermal imaging systems are arranged at the tail part of the vibrating screen and the position of the discharging guide pipe to detect the passing activated carbon particles, so that the high-temperature activated carbon particles possibly existing in all the activated carbon particles are detected, the hidden danger is eliminated, the temperature of the activated carbon particles entering the adsorption tower is proper, and the safety of the system is improved.

Preferably, the imaging area I arranged at the tail part of the vibrating screen comprises a first imaging area and a second imaging area, and the first imaging area is positioned at the upstream of the second imaging area. In the first or third embodiment, the first thermal imaging camera first shoots the material entering the first imaging area at the tail part of the vibrating screen to obtain a primary thermal imaging image; analyzing and judging whether the material entering the first imaging area has a suspected high-temperature point or not according to the primary thermal imaging image; tracking and shooting the material with the suspected high-temperature point in the primary thermal imaging image, and acquiring a secondary thermal imaging image of the material at the suspected high-temperature point entering the second imaging area; and analyzing and judging whether the suspected high-temperature point is a high-temperature point or not according to the secondary thermal imaging image. And when the suspected high-temperature point is confirmed to be the high-temperature point, recording the found position of the high-temperature point material in the second imaging area and giving an alarm.

Preferably, the imaging zone ii disposed in the inclined section of the discharge conduit comprises a third imaging zone and a fourth imaging zone, the third imaging zone being upstream of the fourth imaging zone. In the second or third embodiment, the second thermal imaging camera first takes a picture of the material entering the third imaging area of the inclined section of the discharge conduit to obtain three thermal imaging images; analyzing and judging whether the material entering a third imaging area has a suspected high-temperature point or not according to the three thermal imaging images; tracking and shooting the material with the suspected high-temperature point in the three thermal imaging images, and acquiring four thermal imaging images of the material at the suspected high-temperature point entering a fourth imaging area; and analyzing and judging whether the suspected high-temperature point is a high-temperature point or not according to the four times of thermal imaging images. And when the suspected high-temperature point is confirmed to be the high-temperature point, recording the found position of the high-temperature point material in the fourth imaging area and giving an alarm.

Further preferably, in the first or third embodiment, the thermal imaging image (i.e. the primary thermal imaging image or the secondary thermal imaging image) is an infrared image with temperature information, and the temperature information of the material at each point in the imaging area i can be read from the thermal imaging image. Comparing the highest temperature value T1 in the primary thermal imaging image with the target temperature T0, it can be determined whether there is a high temperature point in the primary thermal imaging image. If T1 is less than or equal to T0, judging that the primary thermal imaging image does not have a high-temperature point, and continuously carrying out high-temperature monitoring on the material subsequently entering the first imaging area by the thermal imaging instrument. If T1 is larger than T0, judging that the primary thermal imaging image has a suspected high-temperature point; the thermal imager further shoots the material at the suspected high-temperature point to obtain a secondary thermal imaging image of the material in the second imaging area. Dividing the secondary thermal imaging image into n areas (for example, dividing the secondary thermal imaging image into nine-square grids), acquiring a highest temperature value T2 in the n areas, and comparing the T2 with a target temperature T0 to further judge whether the suspected high-temperature point is a high-temperature point. If T2 is less than or equal to T0, the suspected high-temperature point is judged to be a false high-temperature point, and the thermal imager continues to monitor the high temperature of the material entering the first imaging area subsequently. And if T2 is larger than T0, confirming that the suspected high-temperature point is the high-temperature point, and determining the found position of the material at the high-temperature point in the second imaging area and giving an alarm to a main control (namely a main process computer control system) through the area of the highest temperature value T2 corresponding to the secondary thermal imaging image. In order to further embody the accuracy or precision of the high-temperature detection, the secondary thermal imaging image can be a plurality of continuously shot pictures, and the temperature information of the material at the suspected high-temperature point in the plurality of continuously shot pictures is compared, so that more accurate judgment is made on whether the suspected high-temperature point is the high-temperature point.

Further preferably, in the second or third embodiment, the thermal imaging image (i.e. the three times of thermal imaging image or the four times of thermal imaging image) is an infrared image with temperature information, and the temperature information of the material at each point in the imaging area ii can be read from the thermal imaging image. Comparing the maximum temperature value T3 in the three thermal imaging images with the target temperature T0, it may be determined whether the primary thermal imaging image has a high temperature point. If T3 is less than or equal to T0, judging that the three thermal imaging images do not have high temperature points, and continuously carrying out high temperature monitoring on the materials subsequently entering the third imaging area by the thermal imaging instrument. If T3 is larger than T0, judging that the three thermal imaging images have suspected high-temperature points; the thermal imager further shoots the material at the suspected high-temperature point to obtain four thermal imaging images of the material in the fourth imaging area. Dividing the four times of thermal imaging images into n areas (for example, dividing the four times of thermal imaging images into nine-square grids), acquiring the highest temperature value T4 in the n areas, and comparing the T4 with the target temperature T0 to further judge whether the suspected high-temperature point is a high-temperature point. If T4 is less than or equal to T0, the suspected high-temperature point is judged to be a false high-temperature point, and the thermal imager continuously monitors the high temperature of the materials entering the third imaging area subsequently. If T4 is larger than T0, the suspected high-temperature point is determined to be a high-temperature point, and the highest temperature value T2 corresponds to an area on the four thermal imaging images, so that the found position of the material at the high-temperature point in the fourth imaging area is determined, and an alarm is given to a main control (namely a main process computer control system). In order to further embody the accuracy or precision of the high-temperature detection, the quartic thermal imaging image can be a plurality of continuously shot pictures, and the temperature information of the material at the suspected high-temperature point in the plurality of continuously shot pictures is compared, so that more accurate judgment is made on whether the suspected high-temperature point is the high-temperature point.

In the transportation process of high-temperature materials, when the temperature of the materials reaches a certain value, oxidation exothermic reaction can occur in the materials, so that the temperature of the materials is further increased; but the vibration or the relative change of the internal position exists between the materials in the transportation process, so that the condition of the oxidation exothermic reaction of the materials can be destroyed, and the temperature of the materials is reduced. If the situation that the material is high in temperature or spontaneously combusted is directly judged through one-time detection after the high-temperature point is detected, the found position of the material at the high-temperature point is marked and subjected to alarm processing, and the situation that the processing is improper due to inaccurate detection is inevitable. According to the technical scheme, the process of identifying the high-temperature point materials is divided into preliminary judgment of suspected high-temperature points, tracking judgment is carried out on the suspected high-temperature points, and therefore accurate judgment data of the high-temperature points are obtained. The accurate judgment of the high temperature point of the material is also beneficial to the subsequent further processing of the material aiming at the high temperature point.

It should be noted that, in the transportation process of the material in the conveying devices such as the vibrating screen, the conveyor, the discharging guide pipe and the like, local relative displacement occurs between material particles on the conveying devices due to the vibration of the conveying devices, so that the material which may be self-ignited originally releases heat, and the initial suspected high-temperature point is determined as the false high-temperature point.

Generally, the main body of the vibrating screen is a sealing structure, active carbon moves in the vibrating screen, and conventional detection modes such as a thermocouple arranged in the existing vibrating screen are difficult to capture high-temperature active carbon particles passing through quickly. The thermal imaging camera is arranged in the vibrating screen, so that the problems of insufficient space and severe working environment (vibration and dust) exist. Therefore, the existing vibrating screen needs to be modified to meet the requirement of a thermal imaging camera on detecting high-temperature activated carbon particles.

In this application, the first thermal imaging camera is disposed above the shaker tail cover plate (i.e., the first thermal imaging camera is disposed independently of the shaker). Be equipped with the trompil with the shale shaker width on the apron of shale shaker afterbody, the imaging area of first thermal imaging system covers the trompil width, covers the active carbon granule and the active carbon granule of a small segment horizontal segment of shale shaker rear end whereabouts section, and first thermal imaging system passes through the active carbon that the trompil flowed through carries out real-time supervision on to the shale shaker sieve. Preferably, the first thermal imaging camera is arranged on the top of a first light shield, and the first light shield is arranged on the upper part of the opening at the tail part of the vibrating screen. The first light shield is provided with a black coating layer to prevent light reflection. The first light shield can play a role in shielding external light and eliminate interference of the external light to the first thermal imager. In the invention, the connecting position of a first thermal imaging camera and a first light shield is taken as a base point, and the first thermal imaging camera swings back and forth around the base point; the first thermal imaging instrument shoots materials entering a first imaging area and/or a second imaging area at the tail part of the vibrating screen in real time to obtain a primary thermal imaging image and/or a secondary thermal imaging image.

Preferably, the first thermal imaging camera is mounted in a first dustproof cooling protective cover, and the first dustproof cooling protective cover is arranged on the top of the first light shield. The tail part of the first dustproof cooling protective cover (namely one end of the first dustproof cooling protective cover positioned outside the first light shield) is filled with a cooling medium, the cooling medium is sprayed out from the front end of the first dustproof cooling protective cover (namely one end of the first dustproof cooling protective cover positioned in the first light shield), and the cooling medium is used for cooling the first thermal imager and ensures that the working temperature of the first thermal imager is not higher than 60 ℃. Meanwhile, the cooling medium can prevent dust from entering the first thermal imager to cause instrument failure. The cooling medium of the front end spun of first dustproof cooling safety cover still plays clean guard action to the camera lens of first thermal imaging appearance and safety cover high definition protection lens, prevents the dust gathering, pollutes camera lens and safety cover high definition protection lens. In addition, the cooling medium sprayed out of the first dustproof cooling protective cover can maintain positive pressure in the first light shield, prevent external dust from entering the first light shield and prevent individual active carbon particles from jumping out of the vibrating screen from the opening of the first light shield to damage the first thermal imaging camera. The cooling medium is not particularly limited and may perform the above-described functions, and for example, the cooling medium is one of compressed air, water, and nitrogen. In the present invention, the connection position of the first dustproof cooling protection cover and the first shading cover is used as a base point, and the first thermal imaging system and the first dustproof cooling protection cover perform reciprocating swing around the base point.

In the invention, the cover plate of the vibrating screen is also provided with a first dust removal air port and a second dust removal air port. The first dust removal air opening is located at the upstream of the first light shield, and the second dust removal air opening is located at the downstream of the first light shield. The second dust removal air port is obliquely arranged on an end plate at the tail part of the vibrating screen, and the oblique design at the position can ensure that the individual activated carbon particles entering the second dust removal air port can fall back to the vibrating screen by means of gravity. The negative pressure of the cooling medium and the dust removal air port sprayed out of the front end of the first dustproof cooling protective cover removes dust in the space of the thermal imaging range, and is beneficial to improving the accuracy of thermal imaging and providing a good working environment for the first thermal imager.

In the invention, the installation height, the lens and the like of the first thermal imager are adjusted according to the actual situation on site. The first thermal imager, the first dustproof cooling protection cover and the first light shield are integrated, the whole body is independent of the vibrating screen, is positioned above the cover plate at the tail part of the vibrating screen and is 1-2 cm higher than the cover plate of the vibrating screen.

In this application, the second thermal imager is disposed above the angled section of the discharge conduit. The upper edge of the inclined section of the discharging guide pipe is provided with an opening with the width of the discharging guide pipe, the imaging area of the second thermal imager covers the width of the opening, and the second thermal imager monitors the activated carbon flowing through the discharging guide pipe in real time through the opening. Preferably, the second thermal imaging camera is arranged on top of a second light shield arranged on the inclined section of the discharge conduit along the upper part of the opening. The second light shield is provided with a black coating layer to prevent light reflection. The second lens hood can play a role in shielding external light, and interference of the external light to the second thermal imager is eliminated. In the invention, the connecting position of the second thermal imaging camera and the second light shield is taken as a base point, and the second thermal imaging camera performs reciprocating swing around the base point; and the second thermal imaging instrument shoots the material entering the third imaging area and/or the fourth imaging area of the inclined section of the discharge guide pipe in real time to obtain three times of thermal imaging images and/or four times of thermal imaging images.

Further preferably, the second thermal imaging camera is mounted in a second dustproof cooling protective cover, and the second dustproof cooling protective cover is arranged on the top of the second light shield. And a cooling medium is introduced into the tail part of the second dustproof cooling protective cover (namely, one end of the second dustproof cooling protective cover, which is positioned outside the second light shield), and is sprayed out from the front end of the second dustproof cooling protective cover (namely, one end of the second dustproof cooling protective cover, which is positioned in the second light shield), and the cooling medium is used for cooling the second thermal imager and ensuring that the working temperature of the second thermal imager is not higher than 60 ℃. Meanwhile, the cooling medium can prevent dust from entering the second thermal imager to cause instrument failure. The cooling medium of the front end spun of dustproof cooling safety cover of second still plays clean guard action to the camera lens of second thermal imaging system and safety cover high definition protection lens, prevents the dust gathering, pollutes camera lens and safety cover high definition protection lens. In addition, the cooling medium sprayed out of the second dustproof cooling protective cover can maintain positive pressure in the second light shield, prevent external dust from entering the second light shield, and prevent individual activated carbon particles from jumping out of the vibrating screen from the opening of the second light shield to damage the second thermal imaging camera. The cooling medium is not particularly limited and may perform the above-described functions, and for example, the cooling medium is one of compressed air, water, and nitrogen. In the present invention, the second thermal imaging system and the second dust-proof cooling protective cover are reciprocated around a base point at a connecting position of the second dust-proof cooling protective cover and the second light shielding cover.

In the invention, the upper edge of the inclined section of the discharge conduit is also provided with a third dust removal air port and a fourth dust removal air port. The third dust removal air opening is located at the upstream of the second light shield, and the fourth dust removal air opening is located at the downstream of the second light shield. The negative pressure of the cooling medium and the dust removal air port sprayed out of the front end of the first dustproof cooling protective cover removes dust in the space of the thermal imaging range, and is beneficial to improving the accuracy of thermal imaging and providing a good working environment for the first thermal imager.

In the invention, the installation height, the lens and the like of the second thermal imager are adjusted according to the actual situation on site.

In the present invention, one or more thermal imagers may be provided on top of the first light shield and/or the second light shield. In specific implementation, can set up a plurality of thermal imaging cameras, shoot the material that gets into I district of formation of image or formation of image II district through controlling a plurality of independent thermal imaging cameras and obtain the thermal imaging image to guarantee not to omit the material among the high temperature testing process, solved and be difficult to the problem of comprehensive detection among the prior art. Simultaneously, first thermal imaging system and second thermal imaging system do reciprocating swing around the basic point respectively, and the position of first thermal imaging system can swing along with the transport of material on the shale shaker promptly, and the position of second thermal imaging system can swing along with the transport of the interior material of pipe of unloading, and to the material of suspected high temperature point, the thermal imaging system can further track and judge to make and detect more accurate, also more be favorable to realizing the comprehensive nature that detects.

In the invention, the system for detecting the high temperature of the activated carbon in front of the adsorption tower further comprises a main process computer control system (called master control for short) and a data processing module. The method comprises the steps that after a first thermal imager and/or a second thermal imager acquire thermal imaging images of materials in an imaging I area or an imaging II area, whether high-temperature points exist in the corresponding materials or not is judged according to the thermal imaging image analysis, data information judged as the high-temperature points is transmitted to a data processing module, the data processing module is connected with a main control, an alarm is sent to the main control, and the main control enters the next processing flow.

In the present application, the material refers to activated carbon, and is generally fresh activated carbon after being desorbed by an desorption tower.

In the present application, the terms "upstream" and "downstream" refer to the relative concepts in terms of the flow direction of the activated carbon particles on the conveying device such as a vibrating screen, a conveyor, a discharge duct, and the like, that is, on the conveying device, the position where the activated carbon particles pass first is the upstream, and the position where the activated carbon particles pass later is the downstream.

Compared with the prior art, the invention has the following beneficial technical effects:

1. according to the invention, the thermal imaging systems are arranged at the tail part of the vibrating screen and the position of the discharging guide pipe to detect the passing activated carbon particles, so that the high-temperature activated carbon particles possibly existing in all the activated carbon particles are detected, the hidden danger is eliminated, the temperature of the activated carbon particles entering the adsorption tower is proper, and the safety of the system is improved.

2. The thermal imaging system is arranged above the vibrating screen tail cover plate or above the inclined section of the discharge guide pipe, and because the activated carbon particles are in a flowing falling state in the vibrating screen tail or the inclined section of the discharge guide pipe, the falling activated carbon particles are more dispersed than other positions, the activated carbon particles at the bottom layer are shielded by the activated carbon particles at the surface layer to the minimum, and are easier to detect and identify by the thermal imaging system, namely the thermal imaging system is arranged at the position to detect all the activated carbon particles more comprehensively, and the omission is avoided.

3. According to the invention, a high-temperature detection mode of the thermal imager is adopted, and accurate judgment data of the high-temperature point is obtained by preliminarily judging the suspected high-temperature point and tracking and judging the suspected high-temperature point, so that the detection accuracy is improved.

4. The arrangement of the light shield can play a role in shielding external light and eliminate the interference of the external light on the thermal imager; meanwhile, due to the arrangement of the dustproof cooling protective cover and the introduction of a cooling medium into the dustproof cooling protective cover, the thermal imager can be cooled, dust is prevented from being accumulated, and a lens of the thermal imager and a high-definition protective lens of the protective cover are cleaned and protected.

Drawings

FIG. 1 is a schematic diagram of an activated carbon desulfurization and denitrification apparatus in the prior art;

FIG. 2 is a schematic diagram of a prior art desorption tower;

FIG. 3 is a flow chart of a method for detecting the high temperature of the activated carbon in front of the adsorption tower according to the present invention;

FIG. 4 is a flow chart of another method for detecting the high temperature of the activated carbon in front of the adsorption tower according to the invention;

FIG. 5 is a flow chart of a third method for detecting the high temperature of activated carbon in front of an adsorption tower according to the present invention;

FIG. 6 is a schematic structural diagram of a system for detecting high temperature of activated carbon in front of an adsorption tower according to the present invention;

FIG. 7 is a schematic diagram of a first thermal imager acquiring a first thermal image of a material in a first imaging area in accordance with the present invention;

FIG. 8 is a schematic diagram of a first thermal imager acquiring a second thermal image of the material in the second imaging area in accordance with the present invention;

FIG. 9 is a schematic structural diagram of another system for detecting high temperature of activated carbon in front of an adsorption tower according to the present invention;

FIG. 10 is a top view of the light shield of FIG. 9 taken perpendicular to the second light shield direction;

FIG. 11 is a schematic diagram of a second thermal imager acquiring a three-pass thermal image of a material in a third imaging area in accordance with the present invention;

FIG. 12 is a schematic diagram of a second thermal imager acquiring four thermal images of a material in a fourth imaging zone in accordance with the present invention;

FIG. 13 is a schematic structural diagram of a high temperature detection system for activated carbon in front of a third adsorption tower according to the present invention;

fig. 14 is a relationship diagram of a first thermal imager, a data processing module, and a master control in the present invention;

fig. 15 is a relationship diagram of a second thermal imager, a data processing module, and a master control in the present invention;

fig. 16 is a flow chart of data processing of the thermal imager of the present invention.

Reference numerals:

1: a first thermal imager; 2: vibrating screen; 201: a cover plate; 3: imaging a region I; 301: a first imaging region; 302: a second imaging area; 4: a second thermal imager; 5: a conveyor; 6: a discharge conduit; 7: imaging a second area; 701: a third imaging region; 702: a fourth imaging zone; 8: a first light shield; 9: a second light shield; 10: a first dust-proof cooling protective cover; 11: a second dust-proof cooling protective cover; 12: a first dust removal tuyere; 13: a second dust removal tuyere; 14: a third dust removal air port; 15: a fourth dust removal tuyere; a1: a data processing module; a2: a main process computer control system.

Detailed Description

The system comprises a first thermal imager 1, a vibrating screen 2 and a first light shield 8. And a cover plate 201 is arranged on the vibrating screen 2. The first light shield 8 is disposed on a cover plate 201 at the rear of the vibrating screen 2. The first thermal imaging camera 1 is disposed on top of the first light shield 8. An imaging area I3 is arranged at the tail part of the vibrating screen 2. First thermal imaging system 1 shoots in real time the material that gets into 2 afterbody formation of image I district 3 of shale shaker, acquires the thermal imaging image.

In the invention, the system comprises a second thermal imaging camera 4, a discharge duct 6 connected to the discharge opening of the conveyor 5, a second light shield 9. The discharge conduit 6 comprises an inclined section and a vertical section. A second light shield 9 is arranged at the upper edge of the sloping section of the discharge duct 6. The second thermal imager 4 is disposed on top of the second light shield 9. An imaging II area 7 is arranged in the inclined section of the discharging guide pipe 6. The second thermal imaging camera 4 shoots the material entering the discharging guide pipe 6 imaging area II 7 in real time to obtain a thermal imaging image.

In the present invention, the imaging i-zone 3 includes a first imaging zone 301 and a second imaging zone 302. At the rear of the shaker 2, a first imaging zone 301 is located upstream of a second imaging zone 302. With the connecting position of the first thermal imaging system 1 and the first light shield 8 as a base point, the first thermal imaging system 1 swings back and forth around the base point. The first thermal imaging camera 1 shoots materials entering a first imaging area 301 and/or a second imaging area 302 at the tail part of the vibrating screen 2 in real time to obtain a primary thermal imaging image and/or a secondary thermal imaging image.

Preferably, the system further comprises a first dust and cooling protective cover 10 arranged on top of the first light shield 8. The first thermal imaging camera 1 is mounted within a first dust and cooling protective cover 10. With the connection position of the first dustproof cooling protection cover 10 and the first light shielding cover 8 as a base point, the first thermal imaging system 1 and the first dustproof cooling protection cover 10 perform reciprocating swing around the base point. Preferably, a black coating is provided on the inner wall of the first light shield 8.

In the present invention, the image ii region 7 includes a third image region 701 and a fourth image region 702. Within the inclined section of the discharge conduit 6, the third imaging zone 701 is located upstream of the fourth imaging zone 702. The second thermal imaging camera 4 swings back and forth around the base point of the connection position between the second thermal imaging camera 4 and the second light shield 9. The second thermal imaging camera 4 shoots the materials entering the third imaging area 701 and/or the fourth imaging area 702 of the inclined section of the discharge conduit 6 in real time to obtain three times of thermal imaging images and/or four times of thermal imaging images.

Preferably, the system further comprises a second dust and cooling protective cover 11 arranged on top of the second light shield 9. The second thermal imager 4 is mounted within a second dust and cooling protective cover 11. The second thermal imaging system 4 and the second dustproof cooling protection cover 11 are swung back and forth around the base point at the connection position of the second dustproof cooling protection cover 11 and the second light shielding cover 9. Preferably, a black coating is provided on the inner wall of the second light shield 9.

Preferably, the cover plate 201 at the tail of the vibrating screen 2 is provided with a first opening. The first light shield 8 is located at an upper portion of the first opening. The width of the first openings is equal or substantially equal to the width of the vibrating screen 2.

Preferably, the upper edge of the inclined section of the discharge conduit 6 is provided with a second opening. The second light shield 9 is located above the second opening. The width of said second opening is equal or substantially equal to the width of the discharge conduit 6.

In the invention, a first dust removal air opening 12 and a second dust removal air opening 13 are also arranged on the cover plate 201 of the vibrating screen 2. The first dust removal tuyere 12 is located upstream of the first light shield 8. The second dust removal air port 13 is located downstream of the first light shield 8. Preferably, the second dust removal tuyere 13 is obliquely provided on an end plate at the rear of the vibration screen 2. The dust removing device removes dust on the materials on the vibrating screen 2 through the first dust removing air port 12 and/or the second dust removing air port 13.

In the invention, the upper edge of the inclined section of the discharge conduit 6 is also provided with a third dust removal air port 14 and a fourth dust removal air port 15. The third dust removal tuyere 14 is located upstream of the second light shield 9. The fourth dust removal tuyere 15 is located downstream of the second light shield 9. The dust removing device removes dust from the materials in the discharging conduit 6 through the third dust removing tuyere 14 and/or the fourth dust removing tuyere 15.

Preferably, the high temperature detection system further comprises a data processing module A1 and a main process computer control system A2. The first thermal imager 1 and the second thermal imager 4 are both connected with a data processing module A1, and the data processing module A1 is connected with a main process computer control system A2. The main process computer control system A2 controls the operation of the data processing module A1, the first thermal imager 1 and the second thermal imager 4.

Example 1

As shown in fig. 6, the system for detecting the high temperature of the activated carbon in front of the adsorption tower comprises a first thermal imager 1, a vibrating screen 2 and a first light shield 8. And a cover plate 201 is arranged on the vibrating screen 2. The first light shield 8 is disposed on a cover plate 201 at the rear of the vibrating screen 2. The first thermal imaging camera 1 is disposed on top of the first light shield 8. An imaging area I3 is arranged at the tail part of the vibrating screen 2. First thermal imaging system 1 shoots in real time the material that gets into 2 afterbody formation of image I district 3 of shale shaker, acquires the thermal imaging image.

Example 2

As shown in fig. 9 and 10, the system for detecting the high temperature of the activated carbon in front of the adsorption tower comprises a second thermal imaging camera 4, a discharge conduit 6 connected with a discharge port of a conveyor 5 and a second light shield 9. The discharge conduit 6 comprises an inclined section and a vertical section. A second light shield 9 is arranged on the upper edge of the inclined section of the discharge conduit 6. The second thermal imager 4 is disposed on top of the second light shield 9. An imaging II area 7 is arranged in the inclined section of the discharging guide pipe 6. The second thermal imaging camera 4 shoots the material entering the discharging guide pipe 6 imaging area II 7 in real time to obtain a thermal imaging image.

Example 3

As shown in fig. 13, example 1 is repeated except that the system includes a second thermal imaging camera 4, a discharge duct 6 connected to the discharge opening of the conveyor 5, and a second light shield 9. The discharge conduit 6 comprises an inclined section and a vertical section. A second light shield 9 is arranged at the upper edge of the sloping section of the discharge duct 6. The second thermal imager 4 is disposed on top of the second light shield 9. An imaging II area 7 is arranged in the inclined section of the discharging guide pipe 6. The second thermal imaging camera 4 shoots the material entering the discharging guide pipe 6 imaging area II 7 in real time to obtain a thermal imaging image.

Example 4

As shown in fig. 7 and 8, embodiment 3 is repeated except that the imaging i zone 3 includes a first imaging zone 301 and a second imaging zone 302. At the end of shaker 2, the first imaging zone 301 is located upstream of the second imaging zone 302. With the connecting position of the first thermal imaging system 1 and the first light shield 8 as a base point, the first thermal imaging system 1 swings back and forth around the base point. The first thermal imaging camera 1 shoots materials entering a first imaging area 301 and a second imaging area 302 at the tail part of the vibrating screen 2 in real time to obtain a primary thermal imaging image and a secondary thermal imaging image.

Example 5

Example 4 is repeated except that the system further comprises a first dust and cooling protective cover 10 arranged on top of the first light shield 8. The first thermal imaging camera 1 is mounted within a first dust-tight, cooled protective cover 10. With the connection position of the first dustproof cooling protection cover 10 and the first light shielding cover 8 as a base point, the first thermal imaging system 1 and the first dustproof cooling protection cover 10 perform reciprocating swing around the base point. And a black coating is arranged on the inner wall of the first light shield 8.

Example 6

As shown in fig. 11 and 12, embodiment 5 is repeated except that the image ii region 7 includes a third image region 701 and a fourth image region 702. Within the inclined section of the discharge conduit 6, the third imaging zone 701 is located upstream of the fourth imaging zone 702. The second thermal imaging camera 4 swings back and forth around the base point of the connection position between the second thermal imaging camera 4 and the second light shield 9. The second thermal imaging camera 4 shoots the materials entering the third imaging area 701 and the fourth imaging area 702 of the inclined section of the discharge conduit 6 in real time to obtain three times of thermal imaging images and four times of thermal imaging images.

Example 7

Example 6 is repeated except that the system further comprises a second dust and cooling protective cover 11 arranged on top of the second light shield 9. The second thermal imaging camera 4 is mounted within a second dust and cooling protective cover 11. With the connection position of the second dustproof cooling protection cover 11 and the second light shield 9 as a base point, the second thermal imaging system 4 and the second dustproof cooling protection cover 11 perform reciprocating swing around the base point. And a black coating is arranged on the inner wall of the second light shield 9.

Example 8

Example 7 is repeated except that the cover plate 201 at the rear of the vibrating screen 2 is provided with a first opening. The first light shield 8 is located at an upper portion of the first opening. The width of the first opening is equal to the width of the vibrating screen 2. The upper edge of the inclined section of the discharge conduit 6 is provided with a second opening. The second light shield 9 is located at an upper portion of the second opening. The width of said second opening is equal to the width of the discharge duct 6.

Example 9

Example 8 was repeated except that the cover plate 201 of the vibrating screen 2 was further provided with a first dust-removing tuyere 12 and a second dust-removing tuyere 13. The first dust removal tuyere 12 is located upstream of the first light shield 8. The second dust removal air port 13 is located downstream of the first light shield 8. The second dust removal air port 13 is obliquely arranged on an end plate at the tail part of the vibrating screen 2. The dust removing device removes dust on the vibrating screen 2 through the first dust removing air opening 12 and the second dust removing air opening 13.

Example 10

Example 9 was repeated except that the upper edge of the inclined section of the discharge duct 6 was further provided with third dust-removal tuyere 14 and fourth dust-removal tuyere 15. The third dust removal air opening 14 is located upstream of the second light shield 9. The fourth dust removal tuyere 15 is located downstream of the second light shield 9. The dust removing device removes dust from the materials in the discharging conduit 6 through the third dust removing air opening 14 and the fourth dust removing air opening 15.

Example 11

As shown in fig. 14 and 15, example 10 is repeated except that the high temperature detection system further includes a data processing module A1 and a main process computer control system A2. The first thermal imager 1 and the second thermal imager 4 are both connected with a data processing module A1, and the data processing module A1 is connected with a main process computer control system A2. The main process computer control system A2 controls the operation of the data processing module A1, the first thermal imager 1 and the second thermal imager 4.

Example 12

As shown in fig. 3, a method for detecting the high temperature of activated carbon in front of an adsorption tower comprises the following steps:

1a) The method comprises the following steps that a first thermal imaging instrument 1 shoots materials entering an imaging area I3 of a vibrating screen 2 in real time to obtain a thermal imaging image;

2a) Analyzing and judging whether the material entering the imaging I area 3 has a high temperature point or not according to the thermal imaging image;

2a2) And if the thermal imaging image is judged to have a high temperature point, recording the found position of the material at the high temperature point in the imaging area I3 of the vibrating screen 2 and giving an alarm.

Example 13

As shown in fig. 4, a method for detecting the high temperature of activated carbon in front of an adsorption tower comprises the following steps:

1b) The second thermal imager 4 shoots the material in the imaging area II 7 of the discharge conduit 6 connected with the discharge opening of the conveyor 5 in real time to obtain a thermal imaging image;

2b) Analyzing and judging whether the material entering the imaging area II 7 has a high temperature point or not according to the thermal imaging image;

2b2) And if the thermal imaging image is judged to have a high temperature point, recording the found position of the material at the high temperature point in the imaging II area 7 of the discharge guide pipe 6 and giving an alarm.

Example 14

As shown in fig. 5, a method for detecting the high temperature of activated carbon in front of an adsorption tower comprises the following steps:

2a2) If the thermal imaging image is judged to have a high temperature point, recording the found position of the material at the high temperature point in the imaging area I3 of the vibrating screen 2 and giving an alarm;

Example 15

Example 14 is repeated except that the vibrating screen 2 is provided with a cover plate 201, and the material entering the vibrating screen 2 moves along the length direction of the vibrating screen 2. The imaging I area 3 is arranged at the tail part of the vibrating screen 2; the imaging zone i 3 comprises a first imaging zone 301 and a second imaging zone 302, the first imaging zone 301 being located upstream of the second imaging zone 302.

In step 1 a), the first thermal imager 1 takes a real-time picture of the material entering the imaging area i 3 of the vibrating screen 2 to obtain a thermal imaging image, which specifically comprises:

1a1) A first light shield 8 is arranged on a cover plate 201 at the tail part of the vibrating screen 2, and the first thermal imaging camera 1 is arranged at the top of the first light shield 8;

1a2) With the connecting position of the first thermal imaging system 1 and the first light shield 8 as a base point, the first thermal imaging system 1 swings back and forth around the base point. The first thermal imaging camera 1 shoots materials entering a first imaging area 301 and a second imaging area 302 at the tail part of the vibrating screen 2 in real time to obtain a primary thermal imaging image and a secondary thermal imaging image.

Example 16

Example 15 is repeated except that the discharge conduit 6 comprises an inclined section and a vertical section, the material entering the discharge conduit 6 passing through the inclined section and the vertical section of the discharge conduit 6 in sequence. The imaging ii zone 7 is arranged in the inclined section of the discharge conduit 6. The imaging ii area 7 comprises a third imaging area 701 and a fourth imaging area 702, the third imaging area 701 being located upstream of the fourth imaging area 702.

In step 1 b), the second thermal imaging camera 4 takes a real-time image of the material entering the second imaging area 7 of the discharge conduit 6 connected to the discharge opening of the conveyor 5, and obtains a thermal imaging image, specifically:

1b1) A second light shield 9 is arranged on the inclined section of the discharge guide pipe 6, and the second thermal imaging camera 4 is arranged at the top of the second light shield 9;

1b2) The second thermal imaging camera 4 swings back and forth around the base point of the connection position between the second thermal imaging camera 4 and the second light shield 9. The second thermal imaging camera 4 shoots the materials entering the third imaging area 701 and the fourth imaging area 702 of the inclined section of the discharge conduit 6 in real time to obtain three times of thermal imaging images and four times of thermal imaging images.

Example 17

As shown in fig. 16, the example 16 is repeated, except that in step 2 a), whether the material entering the imaging zone i 3 has a high temperature point is determined according to the thermal imaging image analysis, specifically:

the first thermal imager 1 shoots the material entering the first imaging area 301 at the tail of the vibrating screen 2 in real time to obtain a primary thermal imaging image. And acquiring the highest temperature value T1 in the primary thermal imaging image, and comparing the highest temperature value T1 with the set target temperature T0. If T1 is less than or equal to T0, judging that the primary thermal imaging image does not have high temperature points, and repeating the step 1 a). And if T1 is larger than T0, judging that the primary thermal imaging image has a suspected high-temperature point. T0 is 420 ℃.

When the primary thermal imaging image is judged to have the suspected high temperature point, the first thermal imaging instrument 1 tracks and shoots a secondary thermal imaging image of the material at the suspected high temperature point entering the second imaging area 302 at the tail part of the vibrating screen 2, and further judges whether the suspected high temperature point is the high temperature point.

Dividing the secondary thermal imaging image into 9 areas of a nine-square grid, obtaining the highest temperature of each of the 9 areas, selecting the highest temperature value T2 of the 9 highest temperatures, and comparing the highest temperature value T2 with the set target temperature T0. If T2 is less than or equal to T0, the suspected high temperature point is judged to be a false high temperature point, and the step 1 a) is repeated. And if T2 is larger than T0, confirming that the suspected high temperature point is the high temperature point. The highest temperature value T2 corresponds to the area on the secondary thermal imaging image, so that the found position of the material at the high temperature point in the second imaging area 302 at the tail part of the vibrating screen 2 is determined and recorded.

Example 18

Example 17 was repeated except that in step 2 b), the thermal imaging image analysis was used to determine whether the material entering imaging zone ii 7 had a high temperature point, specifically:

the second thermal imager 4 shoots the material entering the third imaging area 701 in the inclined section of the discharge conduit 6 in real time to obtain a three-time thermal imaging image. And acquiring the highest temperature value T3 in the three thermal imaging images, and comparing the highest temperature value T3 with the set target temperature T0. And if the T3 is not more than T0, judging that the three thermal imaging images do not have high temperature points, and repeating the step 1 b). And if T3 is larger than T0, judging that the three thermal imaging images have suspected high-temperature points. T0 is 420 ℃.

When the three thermal imaging images are judged to have the suspected high temperature point, the second thermal imaging instrument 4 tracks and shoots the four thermal imaging images of the material at the suspected high temperature point entering the fourth imaging area 702 in the inclined section of the discharge conduit 6, and further judges whether the suspected high temperature point is the high temperature point.

Dividing the four thermal imaging images into 9 areas of a nine-square grid, obtaining the highest temperature of each of the 9 areas, selecting the highest temperature value T4 of the 9 highest temperatures, and comparing the highest temperature value T4 with the set target temperature T0. If T4 is less than or equal to T0, the suspected high temperature point is judged to be a false high temperature point, and the step 1 b) is repeated. And if T4 is larger than T0, confirming that the suspected high temperature point is the high temperature point. The highest temperature value T4 corresponds to the area on the four thermal imaging images, so that the found position of the material at the high temperature point in the fourth imaging area 702 in the inclined section of the discharge conduit 6 is determined and recorded.

Example 19

Example 18 is repeated except that the top of the first light shield 8 is also provided with a first dust and cooling protective cover 10. The first thermal imaging camera 1 is mounted within a first dust and cooling protective cover 10. With the connection position of the first dustproof cooling protection cover 10 and the first light shielding cover 8 as a base point, the first thermal imaging system 1 and the first dustproof cooling protection cover 10 perform reciprocating swing around the base point. A cooling medium is introduced into the first dustproof cooling protection cover 10, and the cooling medium is sprayed out of the first dustproof cooling protection cover 10 into the first light shield 8. The cooling medium is compressed air. And a black coating is arranged on the inner wall of the first light shield 8.

Example 20

Example 19 is repeated except that the second light shield 9 is also provided with a second dust and cooling protection cover 11 on top. The second thermal imager 4 is mounted within a second dust and cooling protective cover 11. The second thermal imaging system 4 and the second dustproof cooling protection cover 11 are swung back and forth around the base point at the connection position of the second dustproof cooling protection cover 11 and the second light shielding cover 9. And a cooling medium is introduced into the second dustproof cooling protection cover 11, and is sprayed out of the second light shield 9 through the second dustproof cooling protection cover 11. The cooling medium is nitrogen. And a black coating is arranged on the inner wall of the second light shield 9.

Example 21

Example 20 is repeated except that the cover plate 201 at the rear of the vibrating screen 2 is provided with a first opening. The first light shield 8 is located at an upper portion of the first opening. The width of the first opening is equal to the width of the vibrating screen 2. The upper edge of the inclined section of the discharge conduit 6 is provided with a second opening. The second light shield 9 is located at an upper portion of the second opening. The width of said second opening is equal to the width of the discharge duct 6.

Example 22

Example 21 was repeated except that the cover plate 201 of the vibrating screen 2 was further provided with a first dust-removing tuyere 12 and a second dust-removing tuyere 13. The first dust removal air port 12 is located upstream of the first light shield 8. The second dust removal air port 13 is located downstream of the first light shield 8. The second dust removal air port 13 is obliquely arranged on an end plate at the tail part of the vibrating screen 2. The dust removing device removes dust on the materials on the vibrating screen 2 through the first dust removing air opening 12 and the second dust removing air opening 13.

And a third dust removal air port 14 and a fourth dust removal air port 15 are also formed in the upper edge of the inclined section of the discharge guide pipe 6. The third dust removal tuyere 14 is located upstream of the second light shield 9. The fourth dust removal tuyere 15 is located downstream of the second light shield 9. The dust removing device removes dust from the materials in the discharging conduit 6 through the third dust removing air opening 14 and the fourth dust removing air opening 15.

Example 23

The embodiment 22 is repeated, except that the first thermal imaging camera 1 and the second thermal imaging camera 4 are both connected with the data processing module A1, and the data processing module A1 is connected with the main process computer control system A2. And when the thermal imaging image is judged to have a high temperature point, the data processing module A1 gives an alarm to the main process computer control system A2.

Application example 1

A method for detecting high temperature of activated carbon in front of an adsorption tower, which uses the system in embodiment 11, and comprises the following steps:

1a) The method comprises the following steps that a first thermal imaging camera 1 shoots materials entering a first imaging area 301 at the tail part of a vibrating screen 2 in real time to obtain a primary thermal imaging image;

2a) And analyzing and judging whether the material entering the first imaging area 301 has a high temperature point according to the primary thermal imaging image:

and acquiring the highest temperature value T1=120 ℃ in the primary thermal imaging image according to the primary thermal imaging image, and comparing the highest temperature value T1 with the set target temperature T0. T0 is 420 ℃. Since T1 < T0, the primary thermographic image is judged not to have a high temperature point. Repeating step 1 a).

1b) The second thermal imaging camera 4 shoots materials in a third imaging area 701 of the inclined section of the discharging conduit 6 connected with the discharging opening of the conveyor 5 in real time to obtain a thermal imaging image;

2b) And analyzing and judging whether the material entering the third imaging area 701 has a high temperature point according to the three thermal imaging images:

the maximum temperature value T3=121 ℃ in the three thermal imaging images is acquired, and the maximum temperature value T3 is compared with the set target temperature T0. T0 is 420 ℃. Since T3 < T0, the three-pass thermographic image was judged not to have a high temperature point. Repeat step 1 b).

Application example 2

acquiring a maximum temperature value T1=424 ℃ in a primary thermal imaging image, and comparing the maximum temperature value T1 with a set target temperature T0. T0 is 420 ℃. And judging that the primary thermal imaging image has suspected high-temperature points because T1 is larger than T0.

The thermal imaging system 1 tracks and shoots a secondary thermal imaging image of the material at the suspected high-temperature point entering the second imaging area 302 at the tail part of the vibrating screen 2, and further judges whether the suspected high-temperature point is a high-temperature point:

dividing the secondary thermal imaging image into nine-square grids, obtaining the highest temperature of each of 9 areas, selecting the highest temperature value T2=425 ℃ of the 9 highest temperatures, and comparing the highest temperature value T2 with a set target temperature T0. Since T2 > T0, the pseudo high temperature point is confirmed as a high temperature point. And determining the found position of the material at the high temperature point in the second imaging area 302 at the tail part of the vibrating screen 2 through the area of the highest temperature value T2 corresponding to the secondary thermal imaging image, and alarming.

the maximum temperature value T3=135 ℃ in the three thermal imaging images is acquired, and this maximum temperature value T3 is compared with the set target temperature T0. T0 is 420 ℃. Since T3 < T0, the three-pass thermographic image was judged not to have a high temperature point. Repeat step 1 b).

Claims

1. A high-temperature detection method for activated carbon in front of an adsorption tower comprises the following steps:

1a) The method comprises the following steps that a first thermal imaging instrument (1) shoots materials entering an imaging area I (3) of a vibrating screen (2) in real time to obtain a thermal imaging image; the imaging area I (3) is arranged at the tail part of the vibrating screen (2); the imaging I area (3) comprises a first imaging area (301) and a second imaging area (302), and the first imaging area (301) is positioned at the upstream of the second imaging area (302); the method specifically comprises the following steps:

1a1) A first light shield (8) is arranged on a cover plate (201) at the tail part of the vibrating screen (2), and the first thermal imaging camera (1) is arranged at the top of the first light shield (8);

1a2) Taking the connecting position of the first thermal imaging system (1) and the first light shield (8) as a base point, and enabling the first thermal imaging system (1) to do reciprocating swing around the base point; the first thermal imaging instrument (1) shoots materials entering a first imaging area (301) and/or a second imaging area (302) at the tail of the vibrating screen (2) in real time to obtain a primary thermal imaging image and/or a secondary thermal imaging image;

2a) Analyzing and judging whether the material entering the imaging area I (3) has a high temperature point or not according to the thermal imaging image;

2a1) If the thermal imaging image does not have the high temperature point, repeating the step 1 a);

2a2) If the thermal imaging image is judged to have a high temperature point, recording the found position of the material at the high temperature point in the imaging area I (3) of the vibrating screen (2) and giving an alarm;

1b) The second thermal imaging instrument (4) shoots the material in the imaging area II (7) of the discharging guide pipe (6) connected with the discharging opening of the conveyor (5) in real time to obtain a thermal imaging image; the discharge guide pipe (6) comprises an inclined section and a vertical section, and materials entering the discharge guide pipe (6) sequentially pass through the inclined section and the vertical section of the discharge guide pipe (6); the imaging II area (7) is arranged in the inclined section of the discharging guide pipe (6); the imaging II area (7) comprises a third imaging area (701) and a fourth imaging area (702), and the third imaging area (701) is positioned at the upstream of the fourth imaging area (702); the method specifically comprises the following steps:

1b1) A second light shield (9) is arranged on the inclined section of the discharge guide pipe (6), and the second thermal imaging camera (4) is arranged at the top of the second light shield (9);

1b2) Taking the connecting position of the second thermal imaging camera (4) and the second light shield (9) as a base point, and reciprocating swinging the second thermal imaging camera (4) around the base point; the second thermal imaging camera (4) shoots materials entering a third imaging area (701) and/or a fourth imaging area (702) of the inclined section of the discharge guide pipe (6) in real time to obtain three thermal imaging images and/or four thermal imaging images;

2b) Analyzing and judging whether the material entering the imaging area II (7) has a high-temperature point or not according to the thermal imaging image;

2b1) If the thermal imaging image does not have the high temperature point, repeating the step 1 b);

2b2) If the thermal imaging image is judged to have a high temperature point, recording the found position of the material at the high temperature point in the imaging area II (7) of the discharge guide pipe (6) and giving an alarm;

wherein: a cover plate (201) is arranged on the vibrating screen (2), and materials entering the vibrating screen (2) move along the length direction of the vibrating screen (2).

2. The high temperature detection method according to claim 1, characterized in that: in the step 2 a), whether the material entering the imaging area I (3) has a high temperature point or not is judged according to the thermal imaging image analysis, and the method specifically comprises the following steps:

the method comprises the following steps that a first thermal imaging instrument (1) shoots materials entering a first imaging area (301) at the tail of a vibrating screen (2) in real time to obtain a primary thermal imaging image; acquiring a highest temperature value T1 in a primary thermal imaging image, and comparing the highest temperature value T1 with a set target temperature T0; if T1 is not more than T0, judging that the primary thermal imaging image does not have a high temperature point, and repeating the step 1 a); if T1 is larger than T0, judging that the primary thermal imaging image has a suspected high-temperature point;

when the suspected high-temperature point is found in the primary thermal imaging image, the first thermal imaging instrument (1) tracks and shoots a secondary thermal imaging image of the material at the suspected high-temperature point entering a second imaging area (302) at the tail of the vibrating screen (2), and whether the suspected high-temperature point is the high-temperature point is further judged;

dividing the secondary thermal imaging image into n areas, obtaining the highest temperature of each area in the n areas, selecting the highest temperature value T2 in the n highest temperatures, and comparing the highest temperature value T2 with a set target temperature T0; if T2 is less than or equal to T0, judging the suspected high-temperature point as a false high-temperature point, and repeating the step 1 a); if T2 is larger than T0, confirming that the suspected high temperature point is a high temperature point; and determining and recording the found position of the material at the high temperature point in the second imaging area (302) at the tail part of the vibrating screen (2) by the area of the highest temperature value T2 corresponding to the secondary thermal imaging image.

3. The high temperature detection method according to claim 1, characterized in that: in the step 2 b), whether the material entering the imaging area II (7) has a high temperature point or not is judged according to the thermal imaging image analysis, and the method specifically comprises the following steps:

the second thermal imaging instrument (4) shoots the material entering a third imaging area (701) in the inclined section of the discharge guide pipe (6) in real time to obtain a three-time thermal imaging image; acquiring a maximum temperature value T3 in the three thermal imaging images, and comparing the maximum temperature value T3 with a set target temperature T0; if T3 is less than or equal to T0, judging that the three thermal imaging images do not have high temperature points, and repeating the step 1 b); if T3 is larger than T0, judging that the three thermal imaging images have suspected high-temperature points;

when the three thermal imaging images are judged to have suspected high-temperature points, the second thermal imaging instrument (4) tracks and shoots four thermal imaging images of the material at the suspected high-temperature points entering a fourth imaging area (702) in the inclined section of the discharge guide pipe (6), and whether the suspected high-temperature points are high-temperature points is further judged;

dividing the four thermal imaging images into n areas, obtaining the highest temperature of each of the n areas, selecting the highest temperature value T4 of the n highest temperatures, and comparing the highest temperature value T4 with a set target temperature T0; if T4 is less than or equal to T0, judging the suspected high-temperature point as a false high-temperature point, and repeating the step 1 b); if T4 is larger than T0, confirming that the suspected high temperature point is a high temperature point; the highest temperature value T4 corresponds to the area on the four thermal imaging images, so that the found position of the material at the high temperature point in the fourth imaging area (702) in the inclined section of the discharge guide pipe (6) is determined and recorded.

4. The high temperature detection method according to claim 2 or 3, characterized in that: the value range of T0 is 390-425 ℃.

5. The high temperature detection method according to claim 2 or 3, characterized in that: the value range of T0 is 400-420 ℃.

6. The high temperature detection method according to any one of claims 1 to 3, characterized in that: the top of the first light shield (8) is also provided with a first dustproof cooling protective cover (10); the first thermal imaging camera (1) is arranged in the first dustproof cooling protective cover (10); the first thermal imaging system (1) and the first dustproof cooling protection cover (10) do reciprocating swing around a base point by taking the connecting position of the first dustproof cooling protection cover (10) and the first light shield (8) as the base point.

7. The high temperature detection method of claim 6, wherein: and a cooling medium is introduced into the first dustproof cooling protective cover (10), and the cooling medium is sprayed out of the first dustproof cooling protective cover (10) into the first light shield (8).

8. The high temperature detection method according to claim 7, characterized in that: the cooling medium is one of compressed air, water and nitrogen.

9. The high temperature detection method according to claim 8, characterized in that: and a black coating is arranged on the inner wall of the first light shield (8).

10. The high temperature detection method according to any one of claims 1 to 3 and 7 to 9, wherein: the top of the second light shield (9) is also provided with a second dustproof cooling protective cover (11); the second thermal imager (4) is arranged in a second dustproof and cooling protective cover (11); and taking the connecting position of the second dustproof cooling protection cover (11) and the second light shield (9) as a base point, and the second thermal imaging system (4) and the second dustproof cooling protection cover (11) perform reciprocating swing around the base point.

11. The high temperature detection method according to claim 10, characterized in that: and a cooling medium is introduced into the second dustproof cooling protection cover (11), and the cooling medium is sprayed out of the second dustproof cooling protection cover (11) into the second light shield (9).

12. The high temperature detection method according to claim 11, characterized in that: the cooling medium is one of compressed air, water and nitrogen.

13. The high temperature detection method according to claim 12, characterized in that: and a black coating is arranged on the inner wall of the second light shield (9).

14. The high temperature detection method according to claim 10, characterized in that: a cover plate (201) at the tail part of the vibrating screen (2) is provided with a first open hole; the first light shield (8) is positioned at the upper part of the first opening; the width of the first open pore is equal to that of the vibrating screen (2); and/or

The upper edge of the inclined section of the discharge conduit (6) is provided with a second opening; the second light shield (9) is positioned at the upper part of the second opening; the width of the second opening is equal to the width of the discharge conduit (6).

15. The high temperature detection method according to claim 14, characterized in that: a first dust removal air port (12) and a second dust removal air port (13) are further arranged on the cover plate (201) of the vibrating screen (2); the first dust removal air opening (12) is positioned at the upstream of the first light shield (8); the second dust removal air port (13) is positioned at the downstream of the first light shield (8); and/or

The upper edge of the inclined section of the discharge conduit (6) is also provided with a third dust removal air port (14) and a fourth dust removal air port (15); the third dust removal air opening (14) is positioned at the upstream of the second light shield (9); the fourth dust removal air opening (15) is positioned at the downstream of the second light shield (9); and the dust removal device removes dust from the materials in the discharge guide pipe (6) through the third dust removal air opening (14) and/or the fourth dust removal air opening (15).

16. The high temperature detection method of claim 15, wherein: the second dust removal air port (13) is obliquely arranged on an end plate at the tail part of the vibrating screen (2); the dust removal device removes dust on the materials on the vibrating screen (2) through the first dust removal air opening (12) and/or the second dust removal air opening (13).

17. The high temperature detection method according to any one of claims 1 to 3, 7 to 9, and 11 to 16, wherein: the first thermal imager (1) and the second thermal imager (4) are both connected with a data processing module (A1), and the data processing module (A1) is connected with a main process computer control system (A2); and when the thermal imaging image is judged to have a high temperature point, the data processing module (A1) gives an alarm to the main process computer control system (A2).

18. A high temperature detection system for activated carbon before adsorption tower for use in the method of any one of claims 1 to 17, the system comprising a first thermal imager (1), a vibrating screen (2), a first light shield (8); a cover plate (201) is arranged on the vibrating screen (2); the first light shield (8) is arranged on a cover plate (201) at the tail part of the vibrating screen (2); the first thermal imaging camera (1) is arranged at the top of the first light shield (8); an imaging area I (3) is arranged at the tail part of the vibrating screen (2); the method comprises the following steps that a first thermal imaging instrument (1) shoots materials entering a tail imaging area I (3) of a vibrating screen (2) in real time to obtain a thermal imaging image;

the system comprises a second thermal imaging camera (4), a discharge guide pipe (6) connected with a discharge opening of a conveyor (5) and a second light shield (9); the discharge conduit (6) comprises an inclined section and a vertical section; the second light shield (9) is arranged on the upper edge of the inclined section of the discharge conduit (6); the second thermal imaging camera (4) is arranged on the top of the second light shield (9); an imaging II area (7) is arranged in the inclined section of the discharging guide pipe (6); the second thermal imager (4) shoots the material entering the discharge guide pipe (6) imaging area II (7) in real time to obtain a thermal imaging image;

the imaging I area (3) comprises a first imaging area (301) and a second imaging area (302); at the end of the shaker (2), the first imaging zone (301) is located upstream of the second imaging zone (302); taking the connecting position of the first thermal imaging system (1) and the first light shield (8) as a base point, and enabling the first thermal imaging system (1) to do reciprocating swing around the base point; the first thermal imaging instrument (1) shoots materials entering a first imaging area (301) and/or a second imaging area (302) at the tail of the vibrating screen (2) in real time to obtain a primary thermal imaging image and/or a secondary thermal imaging image;

the imaging II area (7) comprises a third imaging area (701) and a fourth imaging area (702); within the sloping section of the discharge conduit (6), the third imaging zone (701) is located upstream of the fourth imaging zone (702); taking the connecting position of the second thermal imaging camera (4) and the second light shield (9) as a base point, and enabling the second thermal imaging camera (4) to do reciprocating swing around the base point; and the second thermal imaging camera (4) shoots the materials entering the third imaging area (701) and/or the fourth imaging area (702) of the inclined section of the discharging guide pipe (6) in real time to obtain three thermal imaging images and/or four thermal imaging images.

19. The high temperature detection system of claim 18, wherein: the system further comprises a first dust-proof cooling protective cover (10) arranged on top of the first light shield (8); the first thermal imaging camera (1) is arranged in the first dustproof cooling protective cover (10); the first thermal imaging system (1) and the first dustproof cooling protection cover (10) do reciprocating swing around a base point by taking the connecting position of the first dustproof cooling protection cover (10) and the first light shield (8) as the base point.

20. The high temperature detection system of claim 19, wherein: and a black coating is arranged on the inner wall of the first light shield (8).

21. The high temperature detection system of claim 20, wherein: the system also comprises a second dustproof and cooling protective cover (11) arranged on the top of the second light shield (9); the second thermal imager (4) is arranged in the second dustproof cooling protective cover (11); and taking the connecting position of the second dustproof cooling protection cover (11) and the second light shield (9) as a base point, and the second thermal imaging system (4) and the second dustproof cooling protection cover (11) perform reciprocating swing around the base point.

22. The high temperature detection system of claim 21, wherein: and a black coating is arranged on the inner wall of the second light shield (9).

23. The high temperature detection system of any one of claims 18-22, wherein: a first opening is formed in a cover plate (201) at the tail of the vibrating screen (2); the first light shield (8) is positioned at the upper part of the first opening; the width of the first open pore is equal to that of the vibrating screen (2); and/or

24. The high temperature detection system of claim 23, wherein: a first dust removal air port (12) and a second dust removal air port (13) are further arranged on the cover plate (201) of the vibrating screen (2); the first dust removal air opening (12) is positioned at the upstream of the first light shield (8); the second dust removal air port (13) is positioned at the downstream of the first light shield (8); and/or

25. The high temperature detection system of claim 24, wherein: the second dust removal air port (13) is obliquely arranged on an end plate at the tail part of the vibrating screen (2); the dust removal device removes dust on the materials on the vibrating screen (2) through the first dust removal air opening (12) and/or the second dust removal air opening (13).

26. The high temperature detection system of claim 25, wherein: the high-temperature detection system also comprises a data processing module (A1) and a main process computer control system (A2); the first thermal imager (1) and the second thermal imager (4) are both connected with a data processing module (A1), and the data processing module (A1) is connected with a main process computer control system (A2); and the main process computer control system (A2) controls the operation of the data processing module (A1), the first thermal imager (1) and the second thermal imager (4).