An on-line detection and discharge interlocking control system for water content of distillation residue

Abstract

The present application provides a kind of distillation residue moisture content on-line detection and residue discharge interlock control system, it provides a kind of non-contact, anti-clogging, double-verification moisture content detection and residue discharge interlock control system, realizes accurate detection, automatic judgment, abnormal alarm, closed-loop error correction, guarantees residue moisture content to reach standard.It includes: non-contact detection unit, infrared moisture detector is provided in distillation kettle;Second verification unit, the residue discharge port of distillation kettle is provided with on-line moisture content sensor, it is used to recheck the discharged cake;Interlock control unit;It is used to receive the moisture content signal of non-contact detection unit, second verification unit, the interlock control unit is also connected vacuum system, heating system, stirring system, residue discharge valve;And alarm and error correction unit, it is when second verification unit detects that moisture content is overproof, alarm is carried out, and residue discharge is suspended, so that distillation kettle carries out drying operation again.

Description

Technical Field

[0001] This invention relates to the technical field of drying and slag discharge, specifically to an online detection and slag discharge interlocking control system for the moisture content of distillation kettle residue. Background Technology

[0002] Low-temperature evaporation / crystallization equipment is widely used in the treatment of high-salt wastewater and industrial residues. The drying and slag discharge effect, heat exchange efficiency, manufacturing difficulty, and operation and maintenance costs of the distillation kettle directly determine the equipment's performance and market competitiveness. Existing drying and slag discharge equipment relies solely on a single moisture content signal to trigger slag discharge, without secondary verification. Furthermore, existing distillation kettle moisture content detection is mostly contact-based, easily clogged by salt residue, leading to decreased accuracy. The lack of a verification mechanism and the inability to automatically correct for excessive moisture content result in unstable slag discharge quality and high solid waste disposal costs. Summary of the Invention

[0003] To address the aforementioned issues, this invention provides an online detection and slag discharge interlocking control system for the moisture content of distillation kettle residue. This system offers a non-contact, anti-clogging, and dual-verification moisture content detection and slag discharge interlocking control system, enabling accurate detection, automatic judgment, abnormal alarm, and closed-loop error correction to ensure that the moisture content of the discharged slag meets the standards.

[0004] An online detection and slag discharge interlocking control system for the moisture content of distillation kettle residue, characterized in that it comprises: The non-contact detection unit includes an infrared moisture detector installed inside the distillation vessel. The secondary verification unit is equipped with an online moisture content sensor at the slag discharge port of the distillation kettle, which is used to re-inspect the discharged slag cake; An interlocking control unit is used to receive moisture content signals from a non-contact detection unit and a secondary verification unit. The interlocking control unit is also connected to a vacuum system, a heating system, a stirring system, and a slag discharge valve. It also includes an alarm and error correction unit, which will issue an alarm and suspend slag discharge when the secondary verification unit detects that the moisture content exceeds the standard, so that the distillation kettle can perform the drying operation again.

[0005] Its further features are: The infrared moisture detector inside the distillation kettle monitors the moisture content of the material in real time during the drying process. If the moisture content reaches the standard for the slag discharge stage, the subsequent slag discharge stage is initiated. The online moisture content sensor is installed at the slag discharge port of the distillation kettle and is located below the slag discharge valve. When the slag discharge valve is activated, the material flows out through the slag discharge port. After sensing the slag cake, the online moisture content sensor monitors the moisture content. If the moisture content reaches the discharge standard, the slag discharge valve is stably open until the slag discharge is completed. If the moisture content exceeds the limit, an alarm is triggered and the slag discharge valve is closed. The drying operation continues until the moisture content is qualified after a second test and the slag discharge is completed. During the drying stage, the vacuum system controls the distillation vessel to maintain an ultimate vacuum of -95 kPa to -99 kPa, while the heating system heats the vessel. The stirring system performs low-speed stirring. At the same time, an infrared moisture detector is installed in the distillation vessel to monitor the moisture content in real time. If the moisture content reaches the standard for the slag discharge stage, the subsequent slag discharge stage is initiated. After entering the slag discharge stage, heating is stopped, the vacuum system stops working and the vacuum is broken. After the pressure inside the vessel reaches the standard, the slag discharge valve and slag discharge port are opened. Then, the moisture content is detected a second time at the slag discharge port by an online moisture content sensor. If the moisture content is qualified, the slag discharge is completed. If the moisture content exceeds the limit, an alarm is triggered and the process is paused. The process continues to return to the drying stage until the moisture content is qualified again, and then the slag discharge is completed.

[0006] With this invention, the non-contact detection unit located inside the distillation kettle uses an infrared moisture detector for continuous detection during the drying process. Once the moisture content meets the standard, slag discharge is initiated. During slag discharge, an online moisture sensor performs a second real-time detection of the moisture content. If the moisture content exceeds the set value, the system immediately alarms, closes the slag discharge port, and re-enters the high-vacuum drying stage. Slag discharge continues once the standard is met again, ensuring that the final slag cake has a qualified moisture content. This invention provides a non-contact, anti-clogging, dual-verification moisture content detection and slag discharge interlocking control system, achieving accurate detection, automatic judgment, abnormal alarm, and closed-loop error correction, ensuring that the slag discharge moisture content meets the standard. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the system configuration of the present invention; Figure 2 This is a perspective view of the vacuum-assisted drying and slag removal equipment for the distillation kettle used in this invention; The names corresponding to the serial numbers in the diagram are as follows: Distillation vessel 10, infrared moisture detector 20, vacuum system 30, heating system 40, stirring system 50. Detailed Implementation

[0008] An online detection and slag discharge interlocking control system for the moisture content of distillation kettle residue, see [link to documentation]. Figure 1 and Figure 2 It includes a non-contact detection unit, a secondary verification unit, an interlock control unit, and an alarm and error correction unit; The non-contact detection unit includes an infrared moisture detector 20 installed inside the distillation vessel 10; The secondary verification unit includes an online moisture content sensor installed at the slag discharge port of the distillation kettle 10. The secondary verification unit is used to re-inspect the discharged slag cake. The interlocking control unit is used to receive moisture content signals from the non-contact detection unit and the secondary verification unit. The interlocking control unit is also connected to the vacuum system 30, the heating system 40, the stirring system 50, and the slag discharge valve. The alarm and error correction unit will issue an alarm and suspend slag discharge when the secondary verification unit detects that the moisture content exceeds the standard, so that the distillation kettle can carry out the drying operation again.

[0009] In specific implementation, the vacuum-assisted drying and slag removal equipment used in the distillation kettle is described in [reference needed]. Figure 2 The infrared moisture detector 20 inside the distillation kettle 10 monitors the moisture content of the material in real time during the drying process. If the moisture content reaches the standard for the slag discharge stage, the subsequent slag discharge stage will be started. The online moisture content sensor is installed at the slag discharge port of the distillation kettle 10 and is located below the slag discharge valve. When the slag discharge valve is activated, the material flows out through the slag discharge port. After the online moisture content sensor senses the slag cake, it monitors the moisture content. If the moisture content reaches the discharge standard, the slag discharge valve is in a stable open state until the slag discharge is completed. If the moisture content exceeds the limit, an alarm is triggered and the slag discharge valve is closed. The drying operation continues until the moisture content is qualified in a second test and the slag discharge is completed. During the drying stage, the vacuum system 30 controls the distillation kettle 10 to maintain an ultimate vacuum of -95kPa to -99kPa, and the heating system 40 heats the kettle. The stirring system 50 performs low-speed stirring. At the same time, an infrared moisture detector 20 is installed in the distillation kettle 10 to monitor the moisture content in real time. If the moisture content reaches the standard for the slag discharge stage, the subsequent slag discharge stage is started. After entering the slag discharge stage, heating is stopped, the vacuum system 30 stops working and the vacuum is broken. After the pressure inside the vessel reaches the standard, the slag discharge valve and slag discharge port are opened. Then, the moisture content is detected a second time at the slag discharge port by an online moisture content sensor. If the moisture content is qualified, the slag discharge is completed. If the moisture content exceeds the limit, an alarm is triggered and the process is paused. The process continues to return to the drying process until the moisture content is qualified again, and then the slag discharge is completed.

[0010] Its working principle is as follows: The non-contact detection unit located inside the distillation kettle detects moisture content using an infrared moisture detector. Continuous monitoring is performed during the drying process. Once the moisture content meets the standard, slag discharge is initiated. During slag discharge, an online moisture sensor performs a second real-time detection of the moisture content. If the moisture content exceeds the set value, the system immediately alarms, closes the slag discharge port, and re-enters the high-vacuum drying stage. Slag discharge continues once the standard is met again, ensuring the final slag cake has a qualified moisture content. It provides a non-contact, anti-clogging, dual-verification moisture content detection and slag discharge interlocking control system, achieving accurate detection, automatic judgment, abnormal alarm, and closed-loop error correction, ensuring that the slag discharge moisture content meets the standard.

[0011] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0012] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A control system for online detection and slag discharge interlocking of moisture content in distillation kettle residue, characterized in that, It includes: The non-contact detection unit includes an infrared moisture detector installed inside the distillation vessel. The secondary verification unit is equipped with an online moisture content sensor at the slag discharge port of the distillation kettle, which is used to re-inspect the discharged slag cake; An interlocking control unit is used to receive moisture content signals from a non-contact detection unit and a secondary verification unit. The interlocking control unit is also connected to a vacuum system, a heating system, a stirring system, and a slag discharge valve. It also includes an alarm and error correction unit, which will issue an alarm and suspend slag discharge when the secondary verification unit detects that the moisture content exceeds the standard, so that the distillation kettle can perform the drying operation again.

2. The online detection and slag discharge interlocking control system for the moisture content of distillation kettle residue according to claim 1, characterized in that: The infrared moisture detector inside the distillation kettle monitors the moisture content of the material in real time during the drying process. If the moisture content reaches the standard for the slag discharge stage, the subsequent slag discharge stage is initiated.

3. The online detection and slag discharge interlocking control system for the moisture content of distillation kettle residue according to claim 2, characterized in that: The online moisture content sensor is installed at the slag discharge port of the distillation kettle and is located below the slag discharge valve. When the slag discharge valve is activated, the material flows out through the slag discharge port. After sensing the slag cake, the online moisture content sensor monitors the moisture content. If the moisture content reaches the discharge standard, the slag discharge valve remains stably open until the slag discharge is completed. If the moisture content exceeds the limit, an alarm is triggered to pause the process, the slag discharge valve is closed, and the drying operation continues until the moisture content is qualified after a second test, at which point the slag discharge is completed.

4. The online detection and slag discharge interlocking control system for the moisture content of distillation kettle residue according to claim 1, characterized in that: During the drying stage, the vacuum system controls the distillation vessel to maintain an ultimate vacuum of -95kPa to -99kPa, while the heating system heats the vessel. The stirring system performs low-speed stirring. At the same time, an infrared moisture detector is installed in the distillation vessel to monitor the moisture content in real time. When the moisture content reaches the standard for the slag discharge stage, the subsequent slag discharge stage is initiated.

5. The online detection and slag discharge interlocking control system for the moisture content of distillation kettle residue according to claim 4, characterized in that: After entering the slag discharge stage, heating is stopped, the vacuum system stops working and the vacuum is broken. After the pressure inside the vessel reaches the standard, the slag discharge valve and slag discharge port are opened. Then, the moisture content is detected a second time at the slag discharge port by an online moisture content sensor. If the moisture content is qualified, the slag discharge is completed. If the moisture content exceeds the limit, an alarm is triggered and the process is paused. The process continues to return to the drying stage until the moisture content is qualified again, and then the slag discharge is completed.

Images