Method for recycling waste heat in production of anhydrous hydrogen fluoride

By building the residual heat reuse system, the multi -level heat exchange module is used to use the water -free hydrogen hydrogen hydrogen hydrogen to produce the residual heat in the smoke in the smoke in the smoke, which solves the problem of incomplete heat utilization in the existing technology, and realizes the efficient reuse and production cost of calories and production costs. reduce.

CN119374123APending Publication Date: 2025-01-28ZHEJIANG SANMEI CHEM IND
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Patent Information

Application Number
CN202411685488.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-23
Publication Date
2025-01-28

AI Technical Summary

Technical Problem

In the prior art, the heat utilization in the flue gas emitted from anhydrous hydrogen fluoride production is not thorough, resulting in heat waste and high production costs.

Method used

A method of re -use the residual heat of hydrogen fluoride to produce residual heat is designed. By building the residual heat reuse system, including smoke collection, filtration, transportation, and multi -level heat exchange modules to achieve multiple use of the residual heat in flue gas.

Benefits of technology

Through the design of multi -level heat exchange modules, it can fully use the remaining heat in smoke, reduce the waste of heat, improve the efficiency of resource utilization, and reduce production costs and environmental pollution.

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Abstract

The invention belongs to the field of anhydrous hydrogen fluoride production, and particularly relates to an anhydrous hydrogen fluoride production waste heat recycling method which comprises the following steps: S1, building a waste heat recycling system, the waste heat recycling system comprises a flue gas collecting module, a flue gas filtering module, an initial temperature module, a flue gas conveying module, a first-stage heat exchange module, a second-stage heat exchange module, a third-stage heat exchange module, a temperature detection module, an analysis and judgment module, a switching control module and a discharging module. S2, collecting flue gas generated during production of anhydrous hydrogen fluoride through a flue gas collection module, filtering the collected flue gas through a flue gas filtering module, and detecting and recording the initial temperature of the flue gas through an initial temperature module; and S3, flue gas is conveyed to the first-stage heat exchange module through the flue gas conveying module, first-stage heat exchange is conducted, the multiple stages of heat exchange modules are arranged, waste heat in the flue gas can be fully recycled, and heat waste is avoided.
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Description

Technical Field

[0001] The invention relates to the technical field of anhydrous hydrogen fluoride production, and in particular to a method for recycling waste heat from anhydrous hydrogen fluoride production. Background Art

[0002] The core purpose of waste heat recycling in anhydrous hydrogen fluoride production is to save energy and reduce emissions, and improve resource utilization efficiency. By recycling waste heat, production costs can be reduced, environmental pollution can be reduced, and sustainable development can be achieved;

[0003] In the prior art, the heat in the flue gas discharged during production is not fully utilized. Therefore, we propose a method for recycling waste heat from the production of anhydrous hydrogen fluoride to solve the above problem. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcoming in the prior art that the heat in the flue gas discharged during production is not fully utilized, and a method for recycling waste heat from the production of anhydrous hydrogen fluoride is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A method for recycling waste heat from the production of anhydrous hydrogen fluoride, comprising the following steps:

[0007] S1. Build a waste heat recycling system, which includes a flue gas collection module, a flue gas filtration module, an initial temperature module, a flue gas delivery module, a primary heat exchange module, a secondary heat exchange module, a tertiary heat exchange module, a temperature detection module, an analysis and judgment module, a switching control module and an emission module;

[0008] S2. Collecting the flue gas generated during the production of anhydrous hydrogen fluoride through a flue gas collection module, filtering the collected flue gas through a flue gas filtration module, and detecting and recording the initial temperature of the flue gas through an initial temperature module;

[0009] S3, the smoke is transported to the primary heat exchange module through the smoke transport module for primary heat exchange. After the heat exchange, the temperature of the smoke is detected by the temperature detection module, and the analysis and judgment module is used to determine whether the temperature of the smoke needs to be heat exchanged. If heat exchange is required, the channel between the primary heat exchange module and the secondary heat exchange module is opened through the switching control module, so that the smoke enters the secondary heat exchange module for secondary heat exchange. After the secondary heat exchange module is heat exchanged, temperature detection and analysis are performed again. If heat exchange is still required, the channel between the secondary heat exchange module and the tertiary heat exchange module is opened through the switching control module, and the smoke enters the tertiary heat exchange module for tertiary heat exchange.

[0010] S4. Flue gas that does not require heat exchange is directly discharged through the emission module.

[0011] Preferably, the analysis and judgment unit includes a data receiving unit, a data comparing unit, a data analyzing unit, a judgment unit, and a threshold setting unit.

[0012] Preferably, the data receiving unit is used to receive the temperature data sent by the temperature detection module, and transmit the received data to the data comparison unit.

[0013] Preferably, the threshold setting unit is used to set a comparison threshold and transmit the set comparison threshold to the data comparison unit. The data comparison unit compares the data transmitted by the data receiving unit with the threshold, analyzes the comparison result through the data analysis unit, and makes a final judgment through the judgment unit.

[0014] Preferably, the switching control module comprises a result receiving unit, the result receiving unit is connected to an instruction matching unit, and the instruction matching unit is connected to a result feedback unit.

[0015] Preferably, the result receiving unit is used to receive the judgment result of the analysis and judgment module, the instruction matching unit matches the corresponding instruction according to the judgment result, and the execution unit is used to execute the matched instruction.

[0016] Preferably, the primary heat exchange module, the secondary heat exchange module and the tertiary heat exchange module all include heat exchange pipes and water tanks.

[0017] Preferably, the smoke filtering module comprises a coarse filtering unit, the coarse filtering unit is connected to a fine filtering unit, and the fine filtering unit is connected to a pressure monitoring unit.

[0018] Preferably, the coarse filtering unit is used to filter large particles in the smoke, the fine filtering unit is used to filter small particles in the smoke, and the pressure monitoring unit is used to monitor the pressure on the smoke filtering module.

[0019] Preferably, the pressure monitoring unit is connected to a pressure comparison unit to compare the monitored pressure with a threshold pressure. When the monitored pressure is greater than the threshold pressure, it indicates that the smoke filter module is clogged.

[0020] In the present invention, the method for recycling waste heat from the production of anhydrous hydrogen fluoride has the following beneficial effects:

[0021] The flue gas generated during the production of anhydrous hydrogen fluoride is collected by the flue gas collection module, the collected flue gas is filtered by the flue gas filtration module, and the initial temperature of the flue gas is detected and recorded by the initial temperature module;

[0022] The smoke is transported to the first-stage heat exchange module through the smoke transport module for first-stage heat exchange. After the heat exchange, the temperature of the smoke is detected by the temperature detection module. The analysis and judgment module determines whether the temperature of the smoke still needs to be heat exchanged. If heat exchange is required, the channel between the first-stage heat exchange module and the second-stage heat exchange module is opened through the switching control module, so that the smoke enters the second-stage heat exchange module for second-stage heat exchange. After the second-stage heat exchange module is heat exchanged, temperature detection and analysis are performed again. If heat exchange is still required, the channel between the second-stage heat exchange module and the third-stage heat exchange module is opened through the switching control module, and the smoke enters the third-stage heat exchange module for third-stage heat exchange.

[0023] The present invention is provided with a multi-stage heat exchange module, which can fully reuse the waste heat in the flue gas and avoid heat waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A block diagram of a waste heat recycling system for a method for recycling waste heat in anhydrous hydrogen fluoride production proposed by the present invention;

[0025] Figure 2 A block diagram of an analysis and judgment module for a method for recycling waste heat from the production of anhydrous hydrogen fluoride proposed by the present invention;

[0026] Figure 3 A block diagram of a switching control module of a method for recycling waste heat from anhydrous hydrogen fluoride production proposed by the present invention;

[0027] Figure 4 A block diagram of a primary heat exchange module of a method for recycling waste heat from anhydrous hydrogen fluoride production proposed by the present invention;

[0028] Figure 5 This is a block diagram of a flue gas filtration module for a method for recycling waste heat from anhydrous hydrogen fluoride production proposed by the present invention. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Embodiment 1

[0031] Reference Figure 1-Figure 5 A method for recycling waste heat from the production of anhydrous hydrogen fluoride comprises the following steps:

[0032] S1. Build a waste heat recycling system, which includes a flue gas collection module, a flue gas filtration module, an initial temperature module, a flue gas delivery module, a primary heat exchange module, a secondary heat exchange module, a tertiary heat exchange module, a temperature detection module, an analysis and judgment module, a switching control module and an emission module;

[0033] S2. Collecting the flue gas generated during the production of anhydrous hydrogen fluoride through a flue gas collection module, filtering the collected flue gas through a flue gas filtration module, and detecting and recording the initial temperature of the flue gas through an initial temperature module;

[0034] S3, the smoke is transported to the primary heat exchange module through the smoke transport module for primary heat exchange. After the heat exchange, the temperature of the smoke is detected by the temperature detection module, and the analysis and judgment module is used to determine whether the temperature of the smoke needs to be heat exchanged. If heat exchange is required, the channel between the primary heat exchange module and the secondary heat exchange module is opened through the switching control module, so that the smoke enters the secondary heat exchange module for secondary heat exchange. After the secondary heat exchange module is heat exchanged, temperature detection and analysis are performed again. If heat exchange is still required, the channel between the secondary heat exchange module and the tertiary heat exchange module is opened through the switching control module, and the smoke enters the tertiary heat exchange module for tertiary heat exchange.

[0035] S4. Flue gas that does not require heat exchange is directly discharged through the emission module.

[0036] In this embodiment, the analysis and judgment unit includes a data receiving unit, a data comparing unit, a data analyzing unit, a judgment unit, and a threshold setting unit.

[0037] In this embodiment, the data receiving unit is used to receive the temperature data sent by the temperature detection module, and transmit the received data to the data comparison unit.

[0038] In this embodiment, the threshold setting unit is used to set a comparison threshold and transmit the set comparison threshold to the data comparison unit. The data comparison unit compares the data transmitted by the data receiving unit with the threshold, analyzes the comparison result through the data analysis unit, and makes a final judgment through the judgment unit.

[0039] In this embodiment, the switching control module includes a result receiving unit, the result receiving unit is connected to the instruction matching unit, and the instruction matching unit is connected to the result feedback unit.

[0040] In this embodiment, the result receiving unit is used to receive the judgment result of the analysis and judgment module, the instruction matching unit matches the corresponding instruction according to the judgment result, and the execution unit is used to execute the matched instruction.

[0041] In this embodiment, the primary heat exchange module, the secondary heat exchange module and the tertiary heat exchange module all include heat exchange pipes and a water tank.

[0042] In this embodiment, the smoke filter module includes a coarse filter unit, the coarse filter unit is connected to a fine filter unit, and the fine filter unit is connected to a pressure monitoring unit.

[0043] In this embodiment, the coarse filtering unit is used to filter large particles in the smoke, the fine filtering unit is used to filter small particles in the smoke, and the pressure monitoring unit is used to monitor the pressure on the smoke filtering module.

[0044] In this embodiment, the pressure monitoring unit is connected to a pressure comparison unit to compare the monitored pressure with a threshold pressure. When the monitored pressure is greater than the threshold pressure, it indicates that the smoke filter module is clogged.

[0045] Embodiment 2

[0046] A method for recycling waste heat from the production of anhydrous hydrogen fluoride, comprising the following steps:

[0047] S1. Build a waste heat recycling system, which includes a flue gas collection module, a flue gas filtration module, an initial temperature module, a flue gas delivery module, a flow rate control module, a primary heat exchange module, a secondary heat exchange module, a tertiary heat exchange module, a temperature detection module, an analysis and judgment module, a switching control module and an emission module;

[0048] S2. Collecting the flue gas generated during the production of anhydrous hydrogen fluoride through a flue gas collection module, filtering the collected flue gas through a flue gas filtration module, and detecting and recording the initial temperature of the flue gas through an initial temperature module;

[0049] S3, the flow rate control module is used to control the flow rate of the flue gas, and the flue gas is transported to the first-stage heat exchange module through the flue gas transport module for first-stage heat exchange. After the heat exchange, the temperature of the flue gas is detected by the temperature detection module, and the analysis and judgment module is used to determine whether the temperature of the flue gas still needs to be heat exchanged. If heat exchange is required, the switching control module is used to open the channel between the first-stage heat exchange module and the second-stage heat exchange module, so that the flue gas enters the second-stage heat exchange module for second-stage heat exchange. After the second-stage heat exchange module is heat exchanged, temperature detection and analysis are performed again. If heat exchange is still required, the switching control module is used to open the channel between the second-stage heat exchange module and the third-stage heat exchange module, and the flue gas enters the third-stage heat exchange module for third-stage heat exchange.

[0050] S4. Flue gas that does not require heat exchange is directly discharged through the emission module.

[0051] In this embodiment, the analysis and judgment unit includes a data receiving unit, a data comparing unit, a data analyzing unit, a judgment unit, and a threshold setting unit.

[0052] In this embodiment, the data receiving unit is used to receive the temperature data sent by the temperature detection module, and transmit the received data to the data comparison unit.

[0053] In this embodiment, the threshold setting unit is used to set a comparison threshold and transmit the set comparison threshold to the data comparison unit. The data comparison unit compares the data transmitted by the data receiving unit with the threshold, analyzes the comparison result through the data analysis unit, and makes a final judgment through the judgment unit.

[0054] In this embodiment, the switching control module includes a result receiving unit, the result receiving unit is connected to the instruction matching unit, and the instruction matching unit is connected to the result feedback unit.

[0055] In this embodiment, the result receiving unit is used to receive the judgment result of the analysis and judgment module, the instruction matching unit matches the corresponding instruction according to the judgment result, and the execution unit is used to execute the matched instruction.

[0056] In this embodiment, the primary heat exchange module, the secondary heat exchange module and the tertiary heat exchange module all include heat exchange pipes and a water tank.

[0057] In this embodiment, the smoke filter module includes a coarse filter unit, the coarse filter unit is connected to a fine filter unit, and the fine filter unit is connected to a pressure monitoring unit.

[0058] In this embodiment, the coarse filtering unit is used to filter large particles in the smoke, the fine filtering unit is used to filter small particles in the smoke, and the pressure monitoring unit is used to monitor the pressure on the smoke filtering module.

[0059] In this embodiment, the pressure monitoring unit is connected to a pressure comparison unit to compare the monitored pressure with a threshold pressure. When the monitored pressure is greater than the threshold pressure, it indicates that the smoke filter module is clogged.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for recycling waste heat from the production of anhydrous hydrogen fluoride, characterized in that: The following steps are involved: S1. Build a waste heat recycling system, which includes a flue gas collection module, a flue gas filtration module, an initial temperature module, a flue gas delivery module, a primary heat exchange module, a secondary heat exchange module, a tertiary heat exchange module, a temperature detection module, an analysis and judgment module, a switching control module and an emission module; S2. Collecting the flue gas generated during the production of anhydrous hydrogen fluoride through a flue gas collection module, filtering the collected flue gas through a flue gas filtration module, and detecting and recording the initial temperature of the flue gas through an initial temperature module; S3, the smoke is transported to the primary heat exchange module through the smoke transport module for primary heat exchange. After the heat exchange, the temperature of the smoke is detected by the temperature detection module, and the analysis and judgment module is used to determine whether the temperature of the smoke needs to be heat exchanged. If heat exchange is required, the channel between the primary heat exchange module and the secondary heat exchange module is opened through the switching control module, so that the smoke enters the secondary heat exchange module for secondary heat exchange. After the secondary heat exchange module is heat exchanged, temperature detection and analysis are performed again. If heat exchange is still required, the channel between the secondary heat exchange module and the tertiary heat exchange module is opened through the switching control module, and the smoke enters the tertiary heat exchange module for tertiary heat exchange. S4. Flue gas that does not require heat exchange is directly discharged through the emission module.

2. The method for recycling waste heat from the production of anhydrous hydrogen fluoride according to claim 1, characterized in that: The analysis and judgment unit includes a data receiving unit, a data comparing unit, a data analyzing unit, a judgment unit, and a threshold setting unit.

3. The method for recycling waste heat from the production of anhydrous hydrogen fluoride according to claim 2, characterized in that: The data receiving unit is used for receiving the temperature data sent by the temperature detection module and transmitting the received data to the data comparison unit.

4. The method for recycling waste heat from the production of anhydrous hydrogen fluoride according to claim 3, characterized in that: The threshold setting unit is used to set a comparison threshold and transmit the set comparison threshold to the data comparison unit. The data comparison unit compares the data transmitted by the data receiving unit with the threshold, analyzes the comparison result through the data analysis unit, and makes a final judgment through the judgment unit.

5. The method for recycling waste heat from the production of anhydrous hydrogen fluoride according to claim 4, characterized in that: The switching control module includes a result receiving unit, the result receiving unit is connected to an instruction matching unit, and the instruction matching unit is connected to a result feedback unit.

6. The method for recycling waste heat from the production of anhydrous hydrogen fluoride according to claim 5, characterized in that: The result receiving unit is used to receive the judgment result of the analysis and judgment module, the instruction matching unit matches the corresponding instruction according to the judgment result, and the execution unit is used to execute the matched instruction.

7. The method for recycling waste heat from the production of anhydrous hydrogen fluoride according to claim 6, characterized in that: The primary heat exchange module, the secondary heat exchange module and the tertiary heat exchange module all include heat exchange pipes and water tanks.

8. The method for recycling waste heat from the production of anhydrous hydrogen fluoride according to claim 7, characterized in that: The smoke filter module comprises a coarse filter unit, the coarse filter unit is connected to a fine filter unit, and the fine filter unit is connected to a pressure monitoring unit.

9. The method for recycling waste heat from the production of anhydrous hydrogen fluoride according to claim 8, characterized in that: The coarse filtering unit is used to filter large particles in the smoke, the fine filtering unit is used to filter small particles in the smoke, and the pressure monitoring unit is used to monitor the pressure on the smoke filtering module.

10. The method for recycling waste heat from the production of anhydrous hydrogen fluoride according to claim 9, characterized in that: The pressure monitoring unit is connected to a pressure comparison unit to compare the monitored pressure with a threshold pressure. When the monitored pressure is greater than the threshold pressure, it indicates that the smoke filter module is clogged.