Adaptive steam control device applied to by-product steam industrial hydrochloric acid synthesis furnace

Abstract

The utility model provides a kind of applied to byproduct steam industrial hydrochloric acid synthesis furnace's self-adapting steam control device, byproduct steam feed water tank is communicated with the synthesis furnace jacket section of industrial hydrochloric acid synthesis furnace by byproduct steam feed water valve;Steam flash tank liquid phase of steam flash tank is communicated with the steam generation section liquid phase of industrial hydrochloric acid synthesis furnace by second temperature sensor;Steam generation section gas phase of industrial hydrochloric acid synthesis furnace is communicated with the steam flash tank gas phase of steam flash tank by first temperature sensor;Steam flash tank gas outlet of steam flash tank is shunt with steam grid connection valve and steam vent valve.The accurate regulation of steam venting and grid connection is realized by automatic control system, improve steam utilization efficiency, reduce resource waste.

Description

Technical Field

[0001] This utility model relates to the field of steam control systems in chemical production, and in particular to an adaptive steam control device for hydrochloric acid synthesis furnaces in by-product steam industry. Background Technology

[0002] Currently, the venting and grid connection of steam from industrial hydrochloric acid synthesis furnaces, which are by-product steam, largely rely on manual control. Manual operation has significant drawbacks: low efficiency, inability to respond promptly to production changes, difficulty in precisely controlling steam pressure and temperature leading to inefficient steam utilization and energy waste, and the instability of manual operation posing considerable safety hazards and increasing the risk of production accidents. Therefore, developing an intelligent adaptive steam control device to automatically adjust steam venting and grid connection, improve steam utilization efficiency, and ensure production safety is of significant practical importance. Utility Model Content

[0003] The main purpose of this invention is to provide an adaptive steam control device for hydrochloric acid synthesis furnaces in by-product steam industry, which solves the problems of low efficiency, inaccurate control and major safety hazards caused by the reliance on manual steam control in the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an adaptive steam control device for an industrial hydrochloric acid synthesis furnace using by-product steam, wherein the by-product steam feedwater tank is connected to the synthesis furnace jacket section of the industrial hydrochloric acid synthesis furnace through a by-product steam feedwater valve.

[0005] The liquid phase of the steam flash tank is connected to the liquid phase of the steam generation section of the industrial hydrochloric acid synthesis furnace via a second temperature sensor.

[0006] The gas phase of the steam generation section of the industrial hydrochloric acid synthesis furnace is connected to the gas phase of the steam flash tank through the first temperature sensor;

[0007] The steam flash tank has a steam grid connection valve and a steam vent valve connected in parallel at its steam flash tank outlet.

[0008] In the preferred embodiment, a liquid level sensor is also installed at the connection point between the by-product steam feedwater pipeline and the jacket section of the synthesis furnace.

[0009] In the preferred embodiment, both the steam grid connection valve and the steam vent valve are electric valves, or manual / electric valves.

[0010] In the preferred embodiment, a control center is also provided, which is electrically connected to the first temperature sensor, the second temperature sensor, the by-product steam feedwater valve, the steam grid connection valve, and the steam vent valve.

[0011] The control center controls the steam vent valve and steam grid connection valve to automatic mode based on temperature and pressure data.

[0012] In the preferred embodiment, a pressure sensor is installed at the outlet of the steam flash tank;

[0013] Pressure sensors are used to detect the pressure values ​​of steam grid connection valves and steam vent valves.

[0014] In the preferred embodiment, the by-product steam feedwater valve is an electric valve, or a manual / electric valve.

[0015] This invention provides an adaptive steam control device for hydrochloric acid synthesis furnaces in the by-product steam industry. Through an automatic control system, it achieves precise regulation of steam venting and grid connection, improving steam utilization efficiency and reducing resource waste. The system automatically detects steam temperature and pressure to ensure production operates within safe parameter ranges, reducing safety risks. A pop-up prompt box asks the user whether to allow steam to be connected to the pipeline network, increasing operational flexibility and safety, balancing automation and manual decision-making. The objectives and times of the function blocks are modifiable to adapt to different production needs, reducing the frequency and difficulty of manual operation, minimizing safety risks caused by human error, and improving production stability and reliability. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of an adaptive steam control device for a hydrochloric acid synthesis furnace in the by-product steam industry, based on this utility model.

[0018] In the diagram: 1. By-product steam feedwater valve; 2. Synthesis furnace jacket section; 3. Steam generation section liquid phase; 4. Steam flash tank liquid phase; 5. Steam flash tank gas phase; 6. Steam generation section gas phase; 7. Steam flash tank outlet; 8. Steam grid connection valve; 9. Steam vent valve; 10. First temperature sensor; 11. Second temperature sensor; 12. Pressure sensor; 13. Control center; 14. Industrial hydrochloric acid synthesis furnace; 15. Steam flash tank; 16. Liquid level sensor. Detailed Implementation

[0019] Example 1

[0020] like Figure 1 As shown, an adaptive steam control device is applied to an industrial hydrochloric acid synthesis furnace with by-product steam. The by-product steam feedwater tank is connected to the synthesis furnace jacket section 2 of the industrial hydrochloric acid synthesis furnace 14 through the by-product steam feedwater valve 1.

[0021] The liquid phase 4 of the steam flash evaporator 15 is connected to the liquid phase 3 of the steam generation section of the industrial hydrochloric acid synthesis furnace 14 through the second temperature sensor 11.

[0022] The vapor phase 6 of the steam generation section of the industrial hydrochloric acid synthesis furnace 14 is connected to the vapor phase 5 of the steam flash tank of the steam flash tank 15 through the first temperature sensor 10.

[0023] The steam flash tank 15 has a steam grid connection valve 8 and a steam vent valve 9 connected in parallel at its steam flash tank outlet 7.

[0024] In the preferred embodiment, a liquid level sensor 16 is also installed at the connection point between the by-product steam feedwater pipeline and the jacket section 2 of the synthesis furnace.

[0025] In the preferred embodiment, both the steam grid connection valve 8 and the steam vent valve 9 are electric valves, or manual / electric valves.

[0026] In the preferred embodiment, a control center 13 is also provided, which is electrically connected to the first temperature sensor 10, the second temperature sensor 11, the by-product steam feedwater valve 1, the steam grid connection valve 8, and the steam vent valve 9.

[0027] The control center 13 controls the steam vent valve 9 and the steam grid connection valve 8 to be in automatic mode based on temperature and pressure data.

[0028] In the preferred embodiment, a pressure sensor 12 is provided at the steam flash tank outlet 7 of the steam flash tank 15;

[0029] Pressure sensor 12 is used to detect the pressure values ​​of steam grid connection valve 8 and steam vent valve 9.

[0030] In the preferred embodiment, the by-product steam feedwater valve 1 is an electric valve, or a manual / electric valve.

[0031] Example 2

[0032] Further explanation in conjunction with Example 1, such as Figure 1 As shown in the diagram, the by-product steam feedwater valve 1 is connected to the synthesis furnace jacket section 2. A liquid level sensor installed at the connection point monitors the liquid level in real time to ensure a stable liquid level in the synthesis furnace jacket, providing a stable water source for steam generation. The liquid phase 3 of the steam generation section is connected to the liquid phase 4 of the steam flash tank. A temperature sensor is installed at the connection point to monitor the liquid phase material transfer temperature and optimize the steam generation and flashing process. The gas phase 5 of the steam flash tank is connected to the gas phase 6 of the steam generation section. A temperature sensor is installed at the connection point to monitor the gas phase steam circulation temperature and improve the steam system temperature monitoring. The steam flash tank outlet 7 is connected to the steam grid connection valve 8 and the steam vent valve 9. The steam vent valve and the steam grid connection valve are manual / automatic switching valves. Temperature sensors detect the temperature of the steam condensate returning to the synthesis furnace and the temperature entering the steam flash tank. Pressure sensors detect the pressure values ​​(SV value) of the steam vent valve and the pressure values ​​(PV value) of the steam grid connection valve, providing data for precise system control.

[0033] The adaptive steam control device for an industrial hydrochloric acid synthesis furnace using by-product steam comprises a steam flash tank attached to the synthesis furnace. The top of the tank is equipped with a steam vent valve, a steam grid connection valve, a pressure sensor, and a controller. The side is equipped with a temperature sensor and a feedwater regulating valve, all connected to the synthesis furnace. The steam vent valve and the steam grid connection valve are both manual / automatic switching valves. The temperature sensor detects the temperature of the condensate returning to the synthesis furnace and the temperature entering the steam flash tank. The pressure sensor detects the pressure values ​​(SV value) of the steam vent valve and the pressure values ​​(PV value) of the steam grid connection valve.

[0034] The by-product steam feedwater valve 1 is connected to the jacket section 2 of the synthesis furnace and is equipped with a liquid level sensor 16.

[0035] The liquid phase 3 of the steam generation section is connected to the liquid phase 4 of the steam flash tank and is equipped with a second temperature sensor 11.

[0036] The vapor phase 5 of the steam flash evaporator is connected to the vapor phase 6 of the steam generation section and is equipped with a first temperature sensor 10.

[0037] The steam flash tank outlet 7 is connected to the steam grid valve 8 and the steam vent valve 9, and is equipped with a pressure sensor 12.

[0038] An adaptive steam control device for an industrial hydrochloric acid synthesis furnace using by-product steam is characterized by the following features: after successful furnace ignition, the steam vent valve is fully open (100%) and in manual mode, while the steam grid connection valve is fully closed (0%) and in manual mode. When the temperature of the steam condensate returning to the synthesis furnace is ≥100℃ and the temperature of the steam flash tank is ≥100℃, the steam vent valve is put into automatic mode with a setpoint of 0.1MPa, a target setting of 0.85MPa (modifiable), a time setting of 24h (modifiable), and the start function block switch being "ON". When the SV value of the vent valve reaches 0.85MPa and the PV value is ≥0.8MPa, the controller displays a prompt asking whether steam grid connection is allowed. After user confirmation, the steam grid connection valve is set to automatic mode, and the setpoint follows the current value.

[0039] Example 3

[0040] Further explanation is provided in conjunction with Examples 1-2, such as Figure 1As shown in the diagram, in this embodiment, the adaptive steam control device connects the by-product steam feedwater valve 1 to the synthesis furnace jacket section 2, the liquid phase 3 of the steam generation section to the liquid phase 4 of the steam flash tank, the gas phase 5 of the steam flash tank to the gas phase 6 of the steam generation section, and the steam flash tank outlet 7 to the steam grid connection valve 8 and the steam vent valve 9. When the synthesis furnace is successfully ignited and the switch is ON, the flash tank temperature, pressure, and the status of all valves form a multivariable automatic control system. This system receives signals from temperature and pressure sensors, determines whether the steam temperature and pressure meet the set conditions, automatically adjusts the opening of the steam vent valve and the steam grid connection valve, and when specific conditions are met, pops up a prompt box asking whether steam grid connection is allowed. Based on the actual situation, the steam grid connection valve is set to automatic mode, and the set value follows the current value.

[0041] Example 4

[0042] Further explanation is provided in conjunction with Examples 1-2, such as Figure 1 The structure shown allows the steam vent valve to be fully opened to 100% and set to manual mode to ensure smooth steam discharge during the initial startup of the synthesis furnace and prevent abnormal pressure.

[0043] Close all steam connection valves to 0% and set them to manual mode to prevent steam from being connected to the pipeline network when not ready, thus ensuring system safety.

[0044] Waiting for the temperature of the steam condensate in the synthesis furnace to be ≥100℃ and the temperature of the steam entering the flash evaporator to be ≥100℃ indicates that the steam system has reached a stable operating foundation.

[0045] Put the steam vent valve into automatic mode, set the value to 0.1MPa, set the function block target to 0.85MPa (which can be adjusted according to actual production), set the time to 24h (which can be modified according to working conditions), and set the start function block switch to "ON".

[0046] Wait for the SV value of the vent valve to reach 0.85 MPa.

[0047] At the same time, the controller checks if the PV value of the vent valve is ≥0.8MPa. If the condition is met, a prompt box will pop up: "Do you allow steam to be connected to the pipeline network?"

[0048] After the user clicks "Yes", the controller sets the steam grid connection valve to automatic mode, and the set value follows the current value to complete the steam grid connection operation.

[0049] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. An adaptive steam control device for a hydrochloric acid synthesis furnace in a by-product steam industry, characterized in that: The by-product steam feedwater tank is connected to the synthesis furnace jacket section (2) of the industrial hydrochloric acid synthesis furnace (14) through the by-product steam feedwater valve (1); The liquid phase (4) of the steam flash evaporator (15) is connected to the liquid phase (3) of the steam generation section of the industrial hydrochloric acid synthesis furnace (14) through the second temperature sensor (11); The vapor phase (6) of the steam generation section of the industrial hydrochloric acid synthesis furnace (14) is connected to the vapor phase (5) of the steam flash tank (15) through the first temperature sensor (10); The steam flash tank (15) has a steam grid valve (8) and a steam vent valve (9) connected in parallel to its steam flash tank outlet (7).

2. The adaptive steam control device for a hydrochloric acid synthesis furnace in a by-product steam industry according to claim 1, characterized in that: A liquid level sensor (16) is also installed at the connection point between the by-product steam feedwater pipeline and the jacket section (2) of the synthesis furnace.

3. The adaptive steam control device for a hydrochloric acid synthesis furnace in a by-product steam industry according to claim 1, characterized in that: Both the steam grid connection valve (8) and the steam vent valve (9) are electric valves, or manual / electric valves.

4. The adaptive steam control device for a hydrochloric acid synthesis furnace in a by-product steam industry according to claim 1, characterized in that: It is also equipped with a control center (13), which is electrically connected to the first temperature sensor (10), the second temperature sensor (11), the by-product steam feed valve (1), the steam grid connection valve (8) and the steam vent valve (9); The control center (13) controls the steam vent valve (9) and the steam grid connection valve (8) to be in automatic mode based on temperature and pressure data.

5. The adaptive steam control device for a hydrochloric acid synthesis furnace in a by-product steam industry according to claim 1, characterized in that: A pressure sensor (12) is provided at the steam flash tank outlet (7) of the steam flash tank (15); The pressure sensor (12) is used to detect the pressure values ​​of the steam grid valve (8) and the steam vent valve (9).

6. The adaptive steam control device for a hydrochloric acid synthesis furnace in a by-product steam industry according to claim 1, characterized in that: The by-product steam feedwater valve (1) is an electric valve or a manual / electric valve.

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