Rectifying tower for solid waste treatment

Abstract

The utility model discloses a rectifying tower for solid waste treatment, which comprises a tower body, a monitoring port is arranged on the outer wall of the tower body, a monitoring device is integrated on the tower body, and the monitoring device covers the monitoring port; the monitoring device comprises a rotary driving mechanism, a protective shell and a cleaning structure, the rotary driving mechanism is fixedly connected to the outer wall of the tower body and connected with a sensor module, the sensor module is covered with the protective shell, a monitoring cavity and a protective cavity are formed in the protective shell, and the monitoring port is located in the monitoring cavity; the cleaning structure is located between the monitoring cavity and the protection cavity. According to the technical scheme, the sensor is periodically moved out of a high-pollution area through the rotary driving mechanism, so that the particle attachment time is shortened; residual pollutants are automatically removed through the cleaning structure when the sensor returns to the protection cavity, manual intervention is replaced, full-automatic anti-pollution operation of the monitoring device is achieved, the data accuracy is remarkably improved, and meanwhile the shutdown maintenance requirement is reduced.

Description

Technical Field

[0001] This utility model relates to the field of distillation tower technology, and in particular to a distillation tower for solid waste treatment. Background Technology

[0002] With the development of solid waste resource utilization technologies, distillation columns, as core equipment for pyrolysis gas fractionation and high-value-added product recovery, are widely used in fields such as waste plastic pyrolysis and oily sludge treatment. Unlike traditional chemical distillation columns, solid waste treatment distillation columns need to adapt to complex and variable raw material characteristics (such as high impurity content and easy coking). They are typically equipped with online monitoring devices to track parameters such as temperature, pressure, and gas composition in real time, thereby optimizing fractionation efficiency. In existing technologies, such distillation columns mostly use optical sensors (such as laser absorption spectrometers and infrared thermal imagers) for non-contact monitoring to avoid direct corrosion of the probes by high-temperature corrosive gases.

[0003] However, solid waste pyrolysis gas often contains fine particles (such as dust and tar) and high-humidity vapor, causing significant interference to monitoring devices. On the one hand, fine particles easily adhere to and accumulate on the surface of sensor probes (especially optical windows), forming a shielding layer that reduces the transmittance of laser or infrared signals, resulting in errors in gas concentration detection. On the other hand, high-temperature vapor in the distillation column condenses on the probe surface, forming a liquid film that further interferes with the accuracy of the optical measurement path. Current solutions mostly rely on manual periodic shutdowns for cleaning or the addition of mechanical scrapers, but the cleaning cycle is long and inefficient, and frequent shutdowns severely affect production continuity. Utility Model Content

[0004] The main purpose of this invention is to provide a distillation column for solid waste treatment, which aims to automatically clean the distillation column monitoring device, improve the accuracy of the distillation column monitoring device, and reduce the frequency and duration of downtime for cleaning.

[0005] To achieve the above objectives, this utility model proposes a distillation tower for solid waste treatment, comprising a tower body, a monitoring port on the outer wall of the tower body, a monitoring device integrated on the tower body, and the monitoring device covering the monitoring port;

[0006] The monitoring device includes a rotary drive mechanism, a protective shell, and a cleaning structure. The rotary drive mechanism is fixedly connected to the outer wall of the tower and is connected to a sensor module. The protective shell covers the sensor module and has a monitoring cavity and a protective cavity inside. The monitoring port is located inside the monitoring cavity, and the cleaning structure is located between the monitoring cavity and the protective cavity. The rotary drive mechanism is used to drive the sensor module to periodically move into the monitoring cavity or the protective cavity, and the cleaning structure is used to clean the surface of the sensor module.

[0007] In one possible implementation, the rotary drive mechanism includes a stepper motor and a rotary arm. The stepper motor is fixedly connected to the side wall of the tower body. One end of the rotary arm is connected to the output shaft of the stepper motor, and the other end extends radially along the tower body. The sensor module is detachably mounted on the rotary arm.

[0008] In one possible implementation, the sensor module includes a rotating disk and a sensor probe. The rotating disk is located inside a protective housing and is detachably connected to a rotating arm. The rotating disk abuts against the outer wall of the tower body. The sensor probe is embedded in the rotating disk and measures the gas phase inside the tower body through a monitoring port.

[0009] In one possible implementation, the sensor probe is a tunable laser absorption spectroscopy probe.

[0010] In one possible implementation, the cleaning structure employs a cleaning scraper located between the monitoring chamber and the protective chamber, the cleaning scraper being embedded within the outer wall of the tower body, and the cleaning scraper facing the sensor module.

[0011] In one possible implementation, the cleaning structure further includes a cleaning head located on the side of the cleaning scraper away from the monitoring cavity, the cleaning head facing the sensor module, and the cleaning head being provided with a plurality of soft bristles.

[0012] The working principle and beneficial effects of this utility model are as follows:

[0013] This utility model's technical solution employs a rotary drive mechanism to periodically switch the working position of the sensor module, enabling the sensor to quickly move into the protective chamber after performing detection in the monitoring chamber. This significantly shortens the time the sensor is exposed to a particulate-containing, high-humidity steam environment, thereby reducing the amount of dust and tar adhering to the sensor from the source. Furthermore, a cleaning structure cleans the sensor module when it returns to the protective chamber, removing residual contaminants without manual intervention and ensuring that the probe surface is clean before each detection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 for Figure 2 Sectional view at point AA;

[0018] Figure 4 for Figure 1 Enlarged view of point A;

[0019] Figure 5 for Figure 4 Internal structure diagram of the protective outer shell;

[0020] Figure 6 This is a schematic diagram of the cleaning structure, monitoring cavity, and protective cavity in this utility model;

[0021] Figure 7 for Figure 3 Enlarged view of section B in the middle.

[0022] Explanation of reference numerals: 1. Tower body; 2. Rotary drive mechanism; 3. Protective shell; 4. Cleaning structure; 5. Sensor module; 12. Monitoring port; 21. Stepper motor; 22. Rotating arm; 31. Monitoring chamber; 32. Protective chamber; 41. Cleaning scraper; 42. Cleaning head; 43. Soft bristles; 51. Rotary disk; 52. Sensor probe.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] like Figures 1 to 7 As shown, this embodiment proposes a distillation column for solid waste treatment, including a column body 1. A monitoring port 12 is provided on the outer wall of the column body 1, and a monitoring device is integrated on the column body 1, covering the monitoring port 12. The monitoring device includes a rotary drive mechanism 2, a protective shell 3, and a cleaning structure 4. The rotary drive mechanism 2 is fixedly connected to the outer wall of the column body 1 and is connected to a sensor module 5. The protective shell 3 covers the sensor module 5, and a monitoring cavity 31 and a protective cavity 32 are provided inside the protective shell 3. The monitoring port 12 is located inside the monitoring cavity 31, and the cleaning structure 4 is located between the monitoring cavity 31 and the protective cavity 32. The rotary drive mechanism 2 is used to drive the sensor module 5 to periodically move into the monitoring cavity 31 or the protective cavity 32, and the cleaning structure 4 is used to clean the surface of the sensor module 5.

[0026] The column body 1, as the core container of the distillation process, is used to carry out the functions of pyrolysis gas fractionation and product separation. A monitoring port 12 is located on the outer wall of the column body 1, providing a physical channel for the sensor module 5 to communicate with the gas phase space inside the column. The monitoring port 12 directly connects to the interior of the column body 1, ensuring that the sensor module 5 acquires process data (such as gas composition) in real time. A rotary drive mechanism 2 drives the sensor module 5 to periodically switch between the monitoring chamber 31 (working position) and the protective chamber 32 (protected position). Mechanical movement reduces the sensor's exposure time in high-temperature, high-dust environments. The sensor only briefly enters the monitoring chamber 31 during detection, reducing the erosion from corrosive gases and particles. Periodically exiting the column body 1 environment reduces the probability of particle adhesion and minimizes the need for manual intervention. The monitoring chamber 31 is connected to the interior of the column body 1, where the sensor collects data in an environment consistent with the operating conditions inside the column. The protective chamber 32 isolates the sensor module 5 when it is not performing detection, preventing contact between the sensor module 5 and the gas and liquid phases inside the column. The cleaning structure 4, in conjunction with the rotary drive mechanism 2, cleans the surface of the sensor module 5 from dust, condensate, and other deposits when the sensor module 5 moves from the monitoring chamber 31 into the protective chamber 32. The sensor module 5 is used to directly collect key parameters inside the tower, and the rotary drive mechanism 2 realizes a "detection-cleaning-protection" cycle.

[0027] In this embodiment, the rotary drive mechanism 2 includes a stepper motor 21 and a rotary arm 22. The stepper motor 21 is fixedly connected to the side wall of the tower body 1. One end of the rotary arm 22 is connected to the output shaft of the stepper motor 21, and the other end extends radially along the tower body 1. The sensor module 5 is detachably mounted on the rotary arm 22.

[0028] Stepper motor 21, as the core power source of the rotary drive mechanism 2, is used to precisely control the rotation angle and speed of the rotating arm 22, enabling the sensor module 5 to periodically switch between the monitoring chamber 31 and the protective chamber 32. The high-precision stepping characteristics of stepper motor 21 ensure that the sensor probe 52 is accurately aligned with the monitoring port 12 each time, avoiding measurement errors caused by positional deviation. Rotating arm 22, as a mechanical transmission component, is used to transmit the rotational motion of stepper motor 21 to sensor module 5 and support its radial movement along the tower body 1.

[0029] In this embodiment, the sensor module 5 includes a rotating disk 51 and a sensor probe 52. The rotating disk 51 is located inside the protective housing 3. The rotating disk 51 is detachably connected to the rotating arm 22. The rotating disk 51 abuts against the outer wall of the tower body 1. The sensor probe 52 is embedded in the rotating disk 51. The sensor probe 52 measures the gas phase inside the tower body 1 through the monitoring port 12. The sensor probe 52 is a tunable laser absorption spectroscopy probe.

[0030] The rotating disk 51 serves as the carrier of the sensor module 5, connecting to and rotating with the rotating arm 22 while simultaneously forming a physical seal against the outer wall of the tower body 1. The tight contact between the rotating disk 51 and the outer wall of the tower body 1 prevents dust or vapor from overflowing through the monitoring port 12 and contaminating the protective cavity 32. The sensor probe 52 emits a laser beam into the tower body 1 through the monitoring port 12, utilizing the absorption characteristics of gas molecules at specific wavelengths of laser light to analyze the gas phase composition (such as CO and CH4 concentrations) in real time. Tunable laser absorption spectroscopy technology distinguishes different gases through wavelength tuning, avoiding misjudgments caused by cross-sensitivity in traditional infrared sensors. The laser penetrates the gas phase space inside the tower for direct detection, requiring no sampling pretreatment and adapting to high-dust and high-humidity environments. In this embodiment, the tunable laser absorption spectroscopy probe is a reflective probe. The laser inside the probe emits a tuned laser beam into the measured area (such as the gas phase space inside a distillation column), with a wavelength covering the absorption spectrum of the target gas. Part of the laser beam is reflected by the inner wall of the tower body 1 or other rough surfaces, and the photodetector built into the probe receives the reflected laser beam and measures its intensity attenuation. Finally, the absorption signal is extracted and the gas concentration is inverted using wavelength modulation and harmonic detection techniques. The detachable connection between the rotating disk 51 and the rotating arm 22 can be achieved by bolts or by fastening.

[0031] In this embodiment, the cleaning structure 4 employs a cleaning scraper 41, which is located between the monitoring chamber 31 and the protective chamber 32. The cleaning scraper 41 is embedded in the outer wall of the tower body 1 and faces the sensor module 5. The cleaning structure 4 also includes a cleaning head 42, which is located on the side of the cleaning scraper 41 away from the monitoring chamber 31 and faces the sensor module 5. The cleaning head 42 is provided with several soft bristles 43.

[0032] The cleaning scraper 41 is embedded in the outer wall of the tower body 1 and aligned with the movement path of the sensor module 5. As the sensor module 5 moves from the monitoring chamber 31 to the protective chamber 32, the edge of the scraper contacts the sensor surface, physically scraping away large particulate contaminants (such as tar clumps and dust). The cleaning head 42 is located on the side of the cleaning scraper 41 away from the monitoring chamber 31 (i.e., closer to the protective chamber 32). After the sensor module 5 moves towards the protective chamber 32, the soft bristles 43 contact the surface of the sensor module 5. The soft bristles 43 further clean the surface of the sensor module 5, removing fine particles or condensate films that the scraper failed to remove. The soft bristles 43 (such as those made of nylon or carbon fiber) gently wipe the sensor surface, avoiding scratches on the optical window while removing residue.

[0033] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rectification column for solid waste treatment comprising a column body (1), characterized in that, The outer wall of the tower body (1) is provided with a monitoring port (12), and a monitoring device is integrated on the tower body (1) and covers the monitoring port (12); The monitoring device comprises a rotary driving mechanism (2), a protective shell (3) and a cleaning structure (4), the rotary driving mechanism (2) is fixedly connected to the outer wall of the tower body (1), the rotary driving mechanism (2) is connected with a sensor module (5), the protective shell (3) covers the sensor module (5), the protective shell (3) is provided with a monitoring cavity (31) and a protective cavity (32) therein, the monitoring port (12) is located in the monitoring cavity (31), the cleaning structure (4) is located between the monitoring cavity (31) and the protective cavity (32), and the rotary driving mechanism (2) is used to drive the sensor module (5) to be periodically moved into the monitoring cavity (31) or the protective cavity (32), and the cleaning structure (4) is used to clean the surface of the sensor module (5).

2. A rectifying column for solid waste treatment according to claim 1, characterized in that, The rotary driving mechanism (2) comprises a stepping motor (21) and a rotary arm (22), the stepping motor (21) is fixedly connected to the side wall of the tower body (1), one end of the rotary arm (22) is connected to the output shaft of the stepping motor (21), and the other end of the rotary arm (22) extends along the radial direction of the tower body (1), and the sensor module (5) is detachably mounted on the rotary arm (22).

3. The rectification column for solid waste treatment according to claim 1, characterized in that, The sensor module (5) comprises a rotary disc (51) and a sensor probe (52), the rotary disc (51) is located in the protective shell (3), the rotary disc (51) is detachably connected with the rotary arm (22), the rotary disc (51) abuts against the outer wall of the tower body (1), the sensor probe (52) is embedded in the rotary disc (51), and the sensor probe (52) measures the gas phase in the tower body (1) through the monitoring port (12).

4. The rectification column for solid waste treatment according to claim 3, characterized in that, The sensor probe (52) adopts a tunable laser absorption spectrum probe.

5. The rectification column for solid waste treatment according to claim 1, characterized in that, The cleaning structure (4) adopts a cleaning scraper (41), the cleaning scraper (41) is located between the monitoring cavity (31) and the protective cavity (32), the cleaning scraper (41) is embedded in the outer wall of the tower body (1), and the cleaning scraper (41) faces the sensor module (5).

6. A rectification column for solid waste treatment according to claim 5, characterized in that, The cleaning structure (4) further comprises a cleaning head (42), the cleaning head (42) is located on the side, away from the monitoring cavity (31), of the cleaning scraper (41), the cleaning head (42) faces the sensor module (5), and a plurality of soft bristles (43) are arranged on the cleaning head (42).

Images