Automatic ignition method and system for hydrogen chloride synthetic furnace

Abstract

The invention relates to the technical field of hydrogen chloride production, in particular to an automatic ignition method and system for a hydrogen chloride synthetic furnace, and the method comprises the following steps: controlling a nitrogen purging branch to purge the interior of an ignition gun, and starting an igniter of the ignition gun after purging to complete ignition of the ignition gun outside the furnace; stopping an igniter of the ignition gun when the hydrogen content in the hydrogen chloride synthetic furnace is smaller than a threshold value, and feeding a flame outlet of the ignition gun into the hydrogen chloride synthetic furnace; and the in-furnace ignition process is executed by controlling the actions of the hydrogen side pipeline branch, the chlorine side pipeline branch and the ignition inflation branch. According to the invention, the ignition operation of a traditional worker on the hydrogen chloride synthetic furnace is converted into computer control, so that the ignition automation of the hydrogen chloride synthetic furnace is realized, and the automatic ignition efficiency and stability of the hydrogen chloride synthetic furnace are improved; and the safety risk to workers caused by the processes of placing an ignition rod, disassembling and assembling a blind plate, closing a furnace door and the like due to cut-off leakage of hydrogen and chlorine in an ignition mode of a traditional hydrogen chloride synthetic furnace is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen chloride production, in particular to an automatic ignition method and system for a hydrogen chloride synthesis furnace. Background Art

[0002] The commonly used ignition method of the existing hydrogen chloride synthesis furnace is manual ignition, and the specific steps include: Before the start-up of the hydrogen chloride synthesis furnace, the furnace of the hydrogen chloride synthesis furnace should be purged and replaced with nitrogen. After the nitrogen replacement is qualified, the hydrogen chloride synthesis furnace is evacuated with negative pressure to form a bottom-up airflow in the hydrogen chloride synthesis furnace; Manually add a blind plate to the hydrogen pipeline of the hydrogen chloride synthesis furnace, and continuously sample and analyze the hydrogen content in the hydrogen chloride synthesis furnace. When the hydrogen content is less than 0.07% for two consecutive times, manually insert the ignition rod into the hydrogen chloride synthesis furnace and remove the blind plate of the hydrogen pipeline; Manually open the valve of the hydrogen bypass pipeline and introduce a small amount of hydrogen into the hydrogen chloride synthesis furnace. When the hydrogen in the hydrogen chloride synthesis furnace begins to burn, manually open the valve of the chlorine bypass pipeline and introduce chlorine into the hydrogen chloride synthesis furnace. At this time, hydrogen and chlorine burn normally, that is, ignition is successful. Then take out the ignition rod and manually close the ignition control valve. The ignition of the hydrogen chloride synthesis furnace is completed. The above operations are all manually performed by the staff.

[0003] During the manual ignition process, it is necessary to manually place the ignition rod, disassemble the blind plate, close the furnace door and other operations. If the hydrogen and chlorine shut-off valves of the hydrogen chloride synthesis furnace leak, it will cause safety risks to the staff; and the manual ignition process is to manually observe the flame of the furnace ignition, so it is not easy to observe the flame during the day, so it is impossible to effectively judge whether the ignition has failed and take effective preventive measures in time. Operational problems; further, the manual ignition process requires high workload for the staff, and it is easy to make mistakes when checking the display of process instruments, valve status, and equipment status, resulting in ignition operation errors, leakage, furnace ignition failure, safety accidents and other problems. Summary of the invention

[0004] The present invention provides an automatic ignition method and system for a hydrogen chloride synthesis furnace, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problem of easy errors in the existing manual ignition method, resulting in ignition failure and safety risks to workers.

[0005] One of the technical solutions of the present invention is achieved by the following measures: a method for automatic ignition of a hydrogen chloride synthesis furnace, the method is applied to an automatic ignition device of a hydrogen chloride synthesis furnace, the automatic ignition device of the hydrogen chloride synthesis furnace comprises a hydrogen side pipeline branch, a chlorine side pipeline branch, a nitrogen purge branch, an ignition and charging branch, an ignition gun and a flame sensor, the flame sensor is arranged on the ignition gun, the method comprises: Determine whether the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition gas charging branch and the ignition gun meet the ignition preparation conditions, wherein the ignition preparation conditions are set according to the safety requirements before the ignition of the hydrogen chloride synthesis furnace; In response to yes, it is determined whether the hydrogen content in the hydrogen chloride synthesis furnace is less than or equal to the threshold value; In response to the above, the nitrogen purge branch is controlled to purge the inside of the ignition gun, and after the purge, the igniter of the ignition gun is started, and the ignition charging branch is controlled to send hydrogen into the inside of the ignition gun to complete the ignition of the ignition gun outside the furnace; After the ignition gun is ignited, when the hydrogen content in the hydrogen chloride synthesis furnace is less than the threshold value, the ignition gun's igniter is stopped, and the flame outlet of the ignition gun is sent into the hydrogen chloride synthesis furnace; According to the set in-furnace ignition process, the actions of the hydrogen side pipeline branch, the chlorine side pipeline branch and the ignition and charging branch are controlled to execute the in-furnace ignition process, and when the in-furnace ignition fails during the execution of the in-furnace ignition process, the in-furnace ignition process is exited, and the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition and charging branch and the ignition gun are restored to a state that meets the ignition preparation conditions.

[0006] The following are further optimizations and / or improvements to the above technical solutions: The ignition and charging branch circuit includes a hydrogen inlet pipeline, a nitrogen inlet pipeline and an air inlet pipeline, and the inlet ends of the hydrogen inlet pipeline, the nitrogen inlet pipeline and the air inlet pipeline are respectively provided with a hydrogen solenoid valve, a nitrogen solenoid valve and an air solenoid valve, and the outlets of the hydrogen inlet pipeline, the nitrogen inlet pipeline and the air inlet pipeline are all connected to the ignition gun; the ignition gun ignites outside the furnace, including: Close the air solenoid valve; The ignition gun is purged, and after the purging, the ignition gun's igniter is started, wherein the purging process is to control the nitrogen solenoid valve to close for a set time and then disconnect; Close the hydrogen solenoid valve and determine whether the ignition gun has ignited successfully within the external furnace ignition time threshold based on the data collected by the flame sensor; If the response is no, the hydrogen solenoid valve and the air solenoid valve are disconnected in sequence, and then the ignition gun is purged.

[0007] The above-mentioned control of the hydrogen side pipeline branch, the chlorine side pipeline branch and the ignition and charging branch according to the set furnace ignition process to execute the furnace ignition process includes: Send the flame outlet of the ignition gun into the hydrogen chloride synthesis furnace for a set time, determine whether the ignition in the furnace is successful based on the flame sensor, and in response to yes, continue to execute the furnace ignition process, and in response to no, restore the current state of the ignition and gas charging branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; Control the actions of the hydrogen side pipeline branch, and sequentially open the hydrogen delivery, close the hydrogen exhaust, and open the hydrogen bypass. After each action, determine whether the furnace ignition is successful based on the flame sensor. If yes, continue to execute the furnace ignition process. If no, restore the current state of the ignition and charging branch and the hydrogen side pipeline branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; Controlling the actions of the chlorine side pipeline branch, sequentially opening the hydrogen delivery, closing the chlorine gas exhaust, and opening the chlorine gas bypass, and after each action, judging whether the furnace ignition is successful based on the flame sensor, and in response to yes, continuing to execute the furnace ignition process, and in response to no, restoring the current states of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to a state that meets the ignition preparation conditions, and withdrawing the ignition gun from the hydrogen chloride synthesis furnace; Control the action of the ignition and charging branch, disconnect the hydrogen solenoid valve, disconnect the air solenoid valve and close the nitrogen solenoid valve and then disconnect it after the set time in sequence, and after each action, judge whether the ignition in the furnace is successful based on the flame sensor, and in response to yes, continue to execute the ignition process in the furnace, and in response to no, restore the current status of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace.

[0008] The above-mentioned hydrogen side pipeline branch includes a hydrogen delivery pipeline, a hydrogen bypass pipeline, and a hydrogen exhaust pipeline. A hydrogen delivery control valve, a first hydrogen cut-off control valve, and a second hydrogen cut-off control valve are sequentially arranged on the hydrogen delivery pipeline along the hydrogen delivery direction. The two ends of the hydrogen bypass pipeline are respectively connected to the hydrogen delivery pipelines at both ends of the hydrogen delivery control valve. A hydrogen bypass control valve is arranged on the hydrogen bypass pipeline. One end of the hydrogen exhaust pipeline is connected to the hydrogen delivery pipeline between the hydrogen delivery control valve and the first hydrogen cut-off control valve. A hydrogen exhaust control valve and a hydrogen exhaust flowmeter are arranged on the hydrogen exhaust pipeline. The control of the hydrogen side pipeline branch action sequentially opens hydrogen delivery, closes hydrogen exhaust, and opens hydrogen bypass, and after each action, determines whether the furnace ignition is successful based on the flame sensor. Specifically, the actions of opening the first hydrogen cut-off control valve, opening the second hydrogen cut-off control valve, closing the hydrogen exhaust control valve, and opening the hydrogen bypass control valve are sequentially performed, and after each action, determines whether the furnace ignition is successful based on the flame sensor. In response to yes, the furnace ignition process continues to be executed. In response to no, the current state of the ignition and charging branch and the hydrogen side pipeline branch is restored to a state that meets the ignition preparation conditions, and the ignition gun is withdrawn from the hydrogen chloride synthesis furnace.

[0009] The chlorine side pipeline branch includes a chlorine delivery pipeline, a chlorine bypass pipeline, and a chlorine exhaust pipeline. A chlorine delivery control valve and a chlorine cut-off control valve are sequentially arranged on the chlorine delivery pipeline along the chlorine delivery direction. The two ends of the chlorine bypass pipeline are respectively connected to the chlorine delivery pipelines at the two ends of the chlorine delivery control valve. A chlorine bypass control valve is arranged on the chlorine bypass pipeline. One end of the chlorine exhaust pipeline is connected to the chlorine delivery pipeline between the chlorine delivery control valve and the chlorine cut-off control valve. A chlorine exhaust control valve and a chlorine exhaust flowmeter are arranged on the chlorine exhaust pipeline. The control of the chlorine side pipeline branch action sequentially opens the chlorine delivery, closes the chlorine exhaust, and opens the chlorine bypass, and after each action, determines whether the ignition in the furnace is successful based on the flame sensor. Specifically, the actions of opening the chlorine cut-off control valve, closing the chlorine exhaust control valve, and opening the chlorine bypass control valve are sequentially performed, and after each action, determines whether the ignition in the furnace is successful based on the flame sensor. In response to yes, the furnace ignition process continues to be executed. In response to no, the current states of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch are restored to states that meet the ignition preparation conditions, and the ignition gun is withdrawn from the hydrogen chloride synthesis furnace.

[0010] The above also includes controlling the nitrogen purge branch to purge the hydrogen side pipeline branch and the chlorine side pipeline branch before judging whether the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition charging branch and the ignition gun meet the ignition preparation conditions, wherein the nitrogen purge branch includes a hydrogen nitrogen purge pipeline, a chlorine nitrogen purge pipeline, a nitrogen regulating pipeline, a first hydrogen nitrogen holding valve and a second hydrogen nitrogen holding valve, the hydrogen nitrogen purge pipeline is connected to the hydrogen delivery pipeline at the output end of the second hydrogen cut-off control valve, a hydrogen nitrogen control valve is arranged on the hydrogen nitrogen purge pipeline, and both ends of the nitrogen regulating pipeline are respectively connected to the hydrogen nitrogen purge pipeline and the first hydrogen cut-off control valve and the second hydrogen A hydrogen delivery pipeline between the hydrogen gas cut-off control valves is connected, a hydrogen nitrogen charging regulating valve is arranged on the nitrogen regulating pipeline, one end of the first hydrogen nitrogen charging holding valve is connected to the hydrogen delivery pipeline between the hydrogen evacuation pipeline and the hydrogen delivery control valve, one end of the second hydrogen nitrogen charging holding valve is connected to the hydrogen delivery pipeline between the nitrogen regulating pipeline and the second hydrogen cut-off control valve, a pressure difference detection unit is connected between the other end of the first hydrogen nitrogen charging holding valve and the other end of the second hydrogen nitrogen charging holding valve, and an automatic control is formed between the pressure difference detection unit and the hydrogen nitrogen charging regulating valve, a chlorine nitrogen charging purge pipeline is connected to the chlorine delivery pipeline at the output end of the chlorine cut-off control valve, and a chlorine nitrogen charging control valve is arranged on the chlorine nitrogen charging purge pipeline; The controlling of the nitrogen purge branch to purge the hydrogen side pipeline branch and the chlorine side pipeline branch comprises: Control the hydrogen nitrogen filling control valve and the chlorine nitrogen filling control valve to open, and purge the hydrogen delivery pipeline and the chlorine delivery pipeline; The hydrogen nitrogen filling regulating valve is controlled to open, and the hydrogen delivery pipeline between the first hydrogen cut-off control valve and the second hydrogen cut-off control valve is purged to keep the pressure difference detected by the pressure difference detection unit within a range greater than 5KPa.

[0011] The above ignition preparation conditions include: Hydrogen side pipeline branch: After purging, the difference between the pressure between the hydrogen delivery control valve and the first hydrogen cut-off control valve and the pressure between the first hydrogen cut-off control valve and the second hydrogen cut-off control valve is greater than 5KPa. The hydrogen filling and nitrogen control valve is closed, the hydrogen delivery control valve is closed, the first hydrogen cut-off control valve is closed, the second hydrogen cut-off control valve is closed, the hydrogen exhaust control valve is opened, and the hydrogen bypass control valve is closed. Hydrogen exhaust flow rate is less than 5m 3 / h; Chlorine side pipeline branch: The chlorine gas nitrogen filling control valve is closed, the chlorine gas delivery control valve is closed, the chlorine gas cut-off control valve is closed, the chlorine gas exhaust control valve is opened, and the chlorine gas bypass control valve is closed. Chlorine gas exhaust flow rate is less than 5m 3 / h; Ignition charging branch: The ignition gun is located at the exit of the hydrogen chloride synthesis furnace and is in the flameout state. The hydrogen solenoid valve, nitrogen solenoid valve and air solenoid valve are all closed; Nitrogen purge branch: The hydrogen filling nitrogen regulating valve is open.

[0012] The automatic ignition device for the hydrogen chloride synthesis furnace further comprises a furnace door control valve, which controls the furnace door control valve to open or close the furnace door of the hydrogen chloride synthesis furnace.

[0013] The above-mentioned ignition emergency stop instruction is obtained, and the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition and charging branch and the ignition gun are restored to the state that meets the ignition preparation conditions, and the ignition gun withdraws from the hydrogen chloride synthesis furnace and the hydrogen chloride synthesis furnace door is closed.

[0014] The second technical solution of the present invention is achieved by the following measures: an automatic ignition system for a hydrogen chloride synthesis furnace, comprising: An automatic ignition device for a hydrogen chloride synthesis furnace, wherein the device comprises a hydrogen side pipeline branch, a chlorine side pipeline branch, a nitrogen purge branch, an ignition and charging branch, an ignition gun and a flame sensor, wherein the flame sensor is arranged on the ignition gun to control the device and execute automatic ignition of the hydrogen chloride synthesis furnace; The interactive device is used for the operator to communicate with the control device, so that the operator can view the automatic ignition control process of the hydrogen chloride synthesis furnace through the interactive unit and provide operating instructions to the device.

[0015] The following are further optimizations and / or improvements to the above technical solutions: The above-mentioned interactive device includes a touch display screen, a node indicator light group and an operation button group; The touch screen displays the automatic ignition control process and intermediate execution results of the hydrogen chloride synthesis furnace, obtains the operator's operation instructions, and sends them to the control device, where the operation instructions include ignition preparation instructions, external ignition instructions, internal ignition instructions, and ignition emergency stop instructions; The node indicator light group displays the node information in the automatic ignition control process of the hydrogen chloride synthesis furnace, including the indicator light for completion of ignition preparation outside the furnace, the indicator light for successful ignition outside the furnace, the indicator light for failed ignition outside the furnace, the indicator light for completion of ignition preparation inside the furnace, the indicator light for successful ignition inside the furnace, and the indicator light for failed ignition inside the furnace; The operation button group generates and sends operation instructions, including the external ignition preparation button, the external ignition start button, the internal ignition preparation button, the internal ignition start button, and the ignition emergency stop button.

[0016] The automatic ignition method of the hydrogen chloride synthesis furnace disclosed in the present invention includes four parts: ignition preparation outside the furnace, ignition outside the furnace, ignition preparation inside the furnace, and ignition inside the furnace. The traditional ignition operation of the hydrogen chloride synthesis furnace by the staff is converted into computer control, so that the automation of the ignition of the hydrogen chloride synthesis furnace is realized, the efficiency and stability of the automatic ignition of the hydrogen chloride synthesis furnace are improved, and the safety risks to the staff caused by the placement of the ignition rod, the disassembly and assembly of the blind plate, and the closing of the furnace door caused by the leakage of hydrogen and chlorine in the traditional ignition method of the hydrogen chloride synthesis furnace are avoided. It also solves the problem that whether the ignition of the hydrogen chloride synthesis furnace is successful depends on manual observation, so it is difficult to observe the flame during the day, and it is impossible to effectively judge whether the ignition fails and take effective preventive operation problems in time. Further, the automatic ignition method of the hydrogen chloride synthesis furnace effectively avoids the manual inspection of the display of each instrument, the valve status, and the equipment status during the ignition process, which are prone to omissions, resulting in ignition operation errors leading to leakage, furnace ignition failure, safety accidents and other problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 A schematic flow chart of an automatic ignition method for a hydrogen chloride synthesis furnace provided in one embodiment of the present invention.

[0018] Attached Figure 2 A schematic structural diagram of an automatic ignition device for a hydrogen chloride synthesis furnace provided in one embodiment of the present invention.

[0019] Attached Figure 3A schematic flow chart of an ignition gun out-of-furnace ignition method according to an embodiment of the present invention.

[0020] Attached Figure 4 A schematic flow chart of an ignition gun furnace ignition method according to an embodiment of the present invention.

[0021] Attached Figure 5 A schematic structural diagram of an automatic ignition system for a hydrogen chloride synthesis furnace provided in one embodiment of the present invention.

[0022] Attached Figure 1 The codes are as follows: 1 is a hydrogen chloride synthesis furnace, 2 is a chlorine buffer tank, 3 is a hydrogen buffer tank, 4 is an air inlet sleeve, 5 is an air inlet inner tube, 6 is a quartz lamp holder, 7 is a chlorine delivery pipeline, 8 is a hydrogen delivery pipeline, 9 is a hydrogen chloride delivery pipeline, 10 is an ignition furnace tube, 11 is a furnace door control valve, 12 is a hydrogen inlet pipeline, 13 is a chlorine inlet pipeline, 14 is a hydrogen filling and nitrogen purge pipeline, 15 is a chlorine filling and nitrogen purge pipeline, 16 is a hydrogen filling and nitrogen control valve, 17 is a chlorine filling and nitrogen control valve, 18 is a hydrogen delivery control valve, 19 is a hydrogen bypass pipeline, 20 is a hydrogen bypass control valve, 21 is a first hydrogen cut-off control valve, 22 is a hydrogen cut-off control valve, 23 is a hydrogen cut-off control valve, 24 is a hydrogen cut-off control valve, 25 is a hydrogen cut-off control valve, 26 is a hydrogen cut-off control valve, 27 is a hydrogen cut-off control valve, 28 is a hydrogen cut-off control valve, 29 is a hydrogen cut-off control valve, 30 is a hydrogen cut-off control valve, 31 is a hydrogen cut-off control valve, 32 is a hydrogen cut-off control valve, 33 is a hydrogen cut-off control valve, 34 is a hydrogen cut-off control valve, 35 is a hydrogen cut-off control valve, 36 is a hydrogen cut-off control valve, 37 is a hydrogen cut-off control valve, 38 is a hydrogen cut-off control valve, 39 is a hydrogen cut-off control valve, 40 is a hydrogen cut-off control valve, 41 is a hydrogen cut-off control valve, 42 is a hydrogen cut-off control valve, 43 is a hydrogen cut-off control valve, 44 is a hydrogen cut-off control valve, 45 is a hydrogen cut 2 is a hydrogen exhaust pipeline, 23 is a hydrogen exhaust flowmeter, 24 is a hydrogen exhaust control valve, 25 is a chlorine delivery control valve, 26 is a chlorine bypass pipeline, 27 is a chlorine bypass control valve, 28 is a chlorine cut-off control valve, 29 is a chlorine exhaust pipeline, 30 is a chlorine exhaust flowmeter, 31 is a chlorine exhaust control valve, 32 is a falling film absorption pipeline, 33 is a hydrogen chloride delivery control valve, 34 is a falling film absorption control valve, 35 is a second hydrogen cut-off control valve, 36 is a first hydrogen nitrogen filling holding valve, 37 is a second hydrogen nitrogen filling holding valve, 38 is a hydrogen nitrogen filling regulating valve, 39 is a pressure difference detection unit, and 40 is a nitrogen regulating pipeline 40. DETAILED DESCRIPTION

[0023] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0024] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1: As attached Figure 1 As shown, an embodiment of the present invention discloses an automatic ignition method for a hydrogen chloride synthesis furnace, which is applied to an automatic ignition device for a hydrogen chloride synthesis furnace, wherein the automatic ignition device for a hydrogen chloride synthesis furnace comprises a hydrogen side pipeline branch, a chlorine side pipeline branch, a nitrogen purge branch, an ignition and charging branch, an ignition gun, and a flame sensor, wherein the flame sensor is arranged on the ignition gun, and the method comprises: Step S110, judging whether the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition charging branch and the ignition gun meet the ignition preparation conditions, wherein the ignition preparation conditions are set according to the safety requirements before the ignition of the hydrogen chloride synthesis furnace; Step S120, if the response is yes, it is determined whether the hydrogen content in the hydrogen chloride synthesis furnace is less than the threshold value, and if the response is no, an alarm is issued, and it is further determined whether the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition and charging branch, and the ignition gun meet the ignition preparation conditions; Step S130, in response to "yes", the nitrogen purge branch is controlled to purge the inside of the ignition gun, after the purge, the igniter of the ignition gun is started, and the ignition charging branch is controlled to send hydrogen into the inside of the ignition gun to complete the ignition of the ignition gun outside the furnace; Step S140, after the ignition gun is ignited, when the hydrogen content in the hydrogen chloride synthesis furnace is less than the threshold value, the ignition gun's igniter is stopped, and the flame outlet of the ignition gun is sent into the hydrogen chloride synthesis furnace; Step S150, controlling the actions of the hydrogen side pipeline branch, the chlorine side pipeline branch and the ignition and charging branch according to the set in-furnace ignition process, executing the in-furnace ignition process, and exiting the in-furnace ignition process when the in-furnace ignition fails during the execution of the in-furnace ignition process, and restoring the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition and charging branch and the ignition gun to a state that meets the ignition preparation conditions.

[0025] The furnace ignition process set here is the furnace ignition process set according to the process and production requirements.

[0026] The above-mentioned automatic ignition method of the hydrogen chloride synthesis furnace disclosed in the embodiment of the present invention comprises four parts: external ignition preparation, external ignition, internal ignition preparation and internal ignition. The traditional ignition operation of the hydrogen chloride synthesis furnace by the staff is converted into computer control, the automation of the ignition of the hydrogen chloride synthesis furnace is realized, the efficiency and stability of the automatic ignition of the hydrogen chloride synthesis furnace are improved, and the safety risks to the staff caused by the placement of the ignition rod, the disassembly and installation of the blind plate, the closing of the furnace door, etc. caused by the leakage of hydrogen and chlorine in the traditional ignition method of the hydrogen chloride synthesis furnace are avoided.

[0027] Embodiment 2: As attached Figure 2 As shown, in this embodiment, the automatic ignition device and ignition gun of the hydrogen chloride synthesis furnace used in the automatic ignition method of the hydrogen chloride synthesis furnace are described as follows: The automatic ignition device of the hydrogen chloride synthesis furnace has been partially improved on the basis of the utility model patent with the authorization announcement number CN222164872U, including a hydrogen side pipeline branch, a chlorine side pipeline branch, a nitrogen purge branch, an ignition and charging branch, an ignition gun, a flame sensor, a furnace door control valve and a hydrogen detection sensor. The flame sensor is arranged on the ignition gun, the furnace door control valve is arranged at the furnace door of the hydrogen chloride synthesis furnace, and the hydrogen detection sensor is arranged on the hydrogen chloride synthesis furnace to detect the hydrogen content in the hydrogen chloride synthesis furnace, as follows: (I) The ignition and charging branch circuit includes a hydrogen intake pipeline, a nitrogen intake pipeline and an air intake pipeline. A hydrogen solenoid valve, a nitrogen solenoid valve and an air solenoid valve are respectively provided at the intake ends of the hydrogen intake pipeline, the nitrogen intake pipeline and the air intake pipeline. The outlets of the hydrogen intake pipeline, the nitrogen intake pipeline and the air intake pipeline are all connected to the ignition gun.

[0028] It should be noted that the ignition gun is shown in the utility model patent with authorization announcement number CN222164872U.

[0029] (ii) The hydrogen side pipeline branch includes a hydrogen delivery pipeline, a hydrogen bypass pipeline 19, and a hydrogen exhaust pipeline 22. A hydrogen delivery control valve 18, a first hydrogen cut-off control valve 21, and a second hydrogen cut-off control valve 35 are sequentially arranged on the hydrogen delivery pipeline along the hydrogen delivery direction. Both ends of the hydrogen bypass pipeline 19 are respectively connected to the hydrogen delivery pipeline at both ends of the hydrogen delivery control valve 18. A hydrogen bypass control valve 20 is arranged on the hydrogen bypass pipeline 19. One end of the hydrogen exhaust pipeline 22 is connected to the hydrogen delivery pipeline between the hydrogen delivery control valve 18 and the first hydrogen cut-off control valve 21. A hydrogen exhaust control valve 24 and a hydrogen exhaust flowmeter 23 are arranged on the hydrogen exhaust pipeline 22.

[0030] (III) The chlorine side pipeline branch includes a chlorine gas delivery pipeline, a chlorine gas bypass pipeline 26, and a chlorine gas exhaust pipeline 29. A chlorine gas delivery control valve 25 and a chlorine gas cut-off control valve 28 are sequentially arranged on the chlorine gas delivery pipeline along the chlorine gas delivery direction. Both ends of the chlorine gas bypass pipeline 26 are respectively connected to the chlorine gas delivery pipeline at both ends of the chlorine gas delivery control valve 25. A chlorine gas bypass control valve 27 is arranged on the chlorine gas bypass pipeline 26. One end of the chlorine gas exhaust pipeline 29 is connected to the chlorine gas delivery pipeline between the chlorine gas delivery control valve 25 and the chlorine gas cut-off control valve 28. A chlorine gas exhaust control valve 31 and a chlorine gas exhaust flowmeter 30 are arranged on the chlorine gas exhaust pipeline 29.

[0031] (IV) The nitrogen purge branch includes a hydrogen-nitrogen purge pipeline 14, a chlorine-nitrogen purge pipeline 15, a nitrogen regulating pipeline 40, a first hydrogen-nitrogen holding valve 36 and a second hydrogen-nitrogen holding valve 37. The hydrogen-nitrogen purge pipeline 14 is connected to the hydrogen delivery pipeline at the output end of the second hydrogen cut-off control valve 35. A hydrogen-nitrogen control valve 16 is provided on the hydrogen-nitrogen purge pipeline 14. Both ends of the nitrogen regulating pipeline 40 are respectively connected to the hydrogen-nitrogen purge pipeline 14 and the hydrogen delivery pipeline between the first hydrogen cut-off control valve 21 and the second hydrogen cut-off control valve 35. A hydrogen-nitrogen regulating valve 38 is provided on the nitrogen regulating pipeline 40. One end of the holding valve 36 is connected to the hydrogen delivery pipeline between the hydrogen exhaust pipeline 22 and the hydrogen delivery control valve 18, one end of the second hydrogen nitrogen charging holding valve 37 is connected to the hydrogen delivery pipeline between the nitrogen regulating pipeline 40 and the second hydrogen cut-off control valve 35, a pressure difference detection unit 39 is connected between the other end of the first hydrogen nitrogen charging holding valve 36 and the other end of the second hydrogen nitrogen charging holding valve 37, and automatic control is formed between the pressure difference detection unit 39 and the hydrogen nitrogen charging regulating valve 38, the chlorine nitrogen charging purge line 15 is connected to the chlorine delivery pipeline at the output end of the chlorine cut-off control valve 28, and a chlorine nitrogen charging control valve 17 is arranged on the chlorine nitrogen charging purge line 15.

[0032] It should be noted that the pressure difference detection unit 39 is used to detect the difference between the pressure between the hydrogen delivery control valve 18 and the first hydrogen cut-off control valve 21 and the pressure between the first hydrogen cut-off control valve 21 and the second hydrogen cut-off control valve 35. Therefore, the pressure difference detection unit 39 may include but is not limited to a first pressure sensor, a second pressure sensor and a pressure difference control module. The first pressure sensor collects the pressure between the hydrogen delivery control valve 18 and the first hydrogen cut-off control valve 21, and the second pressure sensor collects the pressure between the first hydrogen cut-off control valve 21 and the second hydrogen cut-off control valve 35. The pressure difference control module calculates the pressure difference by subtracting the collected value of the first pressure sensor from the collected value of the second pressure sensor, and forms self-control with the hydrogen nitrogen filling regulating valve 38, and adjusts the hydrogen nitrogen filling regulating valve 38 based on the pressure difference.

[0033] It should also be noted that the air inlet sleeve 4 and the air inlet inner tube 5 are concentrically arranged sleeves, the chlorine in the chlorine delivery pipeline 7 enters the hydrogen chloride synthesis furnace 1 through the air inlet inner tube 5 and the quartz lamp holder 6, and the hydrogen in the hydrogen delivery pipeline 8 enters the hydrogen chloride synthesis furnace 1 through the interlayer between the air inlet sleeve 4 and the air inlet inner tube 5. The chlorine and hydrogen burn at the quartz lamp holder 6 in the hydrogen chloride synthesis furnace 1 to produce hydrogen chloride gas. The quartz lamp holder 6 can be a round shell sphere made of quartz, and one or more round holes can be set on the round shell sphere. And before the hydrogen chloride synthesis furnace 1 is automatically ignited, after the nitrogen purge is completed, the downstream falling film absorption process system draws negative pressure on the hydrogen chloride synthesis furnace 1 through the hydrogen chloride delivery pipeline 9 and the falling film absorption pipeline 32, and a negative pressure airflow from bottom to top is formed in the hydrogen chloride synthesis furnace 1, which can improve the success rate of automatic ignition of the hydrogen chloride synthesis furnace 1.

[0034] Embodiment 3: The embodiment of the present invention is a further optimization of the above embodiment, which also includes controlling the nitrogen purge branch to purge the hydrogen side pipeline branch and the chlorine side pipeline branch before judging whether the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition charging branch and the ignition gun meet the ignition preparation conditions, including: Step S210, controlling the hydrogen nitrogen filling control valve 16 and the chlorine nitrogen filling control valve 17 to open, and purging the hydrogen delivery pipeline and the chlorine delivery pipeline; Step S220, control the hydrogen nitrogen filling regulating valve 38 to open, purge the hydrogen delivery pipeline between the first hydrogen cut-off control valve 21 and the second hydrogen cut-off control valve 35, and maintain the pressure difference detected by the pressure difference detection unit 39 within a range greater than 5KPa.

[0035] Embodiment 4: The embodiment of the present invention is a further optimization of the above embodiment, wherein before the ignition outside the furnace, it is necessary to perform the ignition preparation outside the furnace, including: Step S310, judging whether the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition charging branch and the ignition gun meet the ignition preparation conditions, wherein the ignition preparation conditions are set according to the safety requirements before ignition of the hydrogen chloride synthesis furnace, including: (1) Hydrogen side pipeline branch: After purging, the difference between the pressure between the hydrogen delivery control valve 18 and the first hydrogen cut-off control valve 21 and the pressure between the first hydrogen cut-off control valve 21 and the second hydrogen cut-off control valve 35 is greater than 5 KPa. The hydrogen filling control valve 16 is closed, the hydrogen delivery control valve 18 is closed, the first hydrogen cut-off control valve 21 is closed, the second hydrogen cut-off control valve 35 is closed, the hydrogen exhaust control valve 24 is opened, and the hydrogen bypass control valve 20 is closed. Hydrogen exhaust flow rate is less than 5m 3 / h; (2) Chlorine side pipeline branch: The chlorine gas nitrogen filling control valve 17 is closed, the chlorine gas delivery control valve 25 is closed, the chlorine gas cut-off control valve 28 is closed, the chlorine gas emptying control valve 31 is opened, and the chlorine gas bypass control valve 27 is closed. Chlorine gas exhaust flow rate is less than 5m 3 / h; (3) Ignition and charging branch: The ignition gun is located at the exit of the hydrogen chloride synthesis furnace and is in the flameout state. The hydrogen solenoid valve, nitrogen solenoid valve and air solenoid valve are all closed; (4) Nitrogen purge branch: The hydrogen-nitrogen charging regulating valve 38 is opened.

[0036] In addition to the above conditions, the structure based on the hydrogen chloride synthesis furnace may also include the hydrogen chloride synthesis furnace door being opened, the falling film absorption control valve being opened, the fan being operated, etc.

[0037] Step S320: In response to yes, it is determined whether the hydrogen content in the hydrogen chloride synthesis furnace is less than or equal to the threshold value.

[0038] The threshold value of the hydrogen content in the above-mentioned hydrogen chloride synthesis furnace may be 0.07%.

[0039] Embodiment 5: As attached Figure 3 As shown, the embodiment of the present invention is a further optimization of the above embodiment, wherein the ignition gun furnace ignition process specifically controls the nitrogen purge branch to purge the inside of the ignition gun, starts the igniter of the ignition gun after purge, controls the ignition gas charging branch to feed hydrogen into the ignition gun, and completes the ignition gun furnace ignition, including: Step S410, closing the air solenoid valve; Step S420, purging the ignition gun, and starting the igniter of the ignition gun after purging, wherein the purging process is to control the nitrogen solenoid valve to close for a set time and then disconnect, where the set closing time of the nitrogen solenoid valve can be 3s, and starting the igniter of the ignition gun after purging can control the igniter of the ignition gun to continuously ignite; Step S430, closing the hydrogen solenoid valve, and judging whether the ignition gun has ignited successfully within the ignition time threshold outside the furnace based on the data collected by the flame sensor, where the time threshold may be 15s; Step S440, in response to yes, the ignition gun furnace ignition is completed; Step S450, in response to "no", the hydrogen solenoid valve and the air solenoid valve are disconnected in sequence, and the ignition gun is purged. The purging process here is to control the nitrogen solenoid valve to close after a set time and then disconnect. The set closing time of the nitrogen solenoid valve can be 3s.

[0040] Embodiment 6: The embodiment of the present invention is a further optimization of the above embodiment, wherein the ignition preparation in the furnace includes: Step S410, determining whether the hydrogen content in the hydrogen chloride synthesis furnace is less than or equal to a threshold value, where the threshold value of the hydrogen content in the hydrogen chloride synthesis furnace may be 0.07%; Step S420, close the hydrogen nitrogen filling regulating valve 38, and stop the igniter of the ignition gun.

[0041] Embodiment 7: As attached Figure 4 As shown, the embodiment of the present invention is a further optimization of the above embodiment, wherein the ignition gun furnace ignition process outside is specifically to control the hydrogen side pipeline branch, the chlorine side pipeline branch and the ignition charging branch according to the set furnace ignition process, and execute the ignition gun furnace ignition process, including: Step S510, send the flame outlet of the ignition gun into the hydrogen chloride synthesis furnace for a set time, and determine whether the ignition in the furnace is successful based on the flame sensor. In response to yes, continue to execute the furnace ignition process. In response to no, restore the current state of the ignition and air charging branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace.

[0042] Step S520, controlling the actions of the hydrogen side pipeline branch, sequentially opening the hydrogen delivery, closing the hydrogen exhaust, and opening the hydrogen bypass, and after each action, judging whether the furnace ignition is successful based on the flame sensor, and in response to yes, continuing to execute the furnace ignition process, and in response to no, restoring the current states of the ignition and charging branch and the hydrogen side pipeline branch to the state that meets the ignition preparation conditions, and withdrawing the ignition gun from the hydrogen chloride synthesis furnace; In this step, the first hydrogen cut-off control valve 21, the second hydrogen cut-off control valve 35, the hydrogen exhaust control valve 24, and the hydrogen bypass control valve 20 are opened in sequence, which specifically include: Open the first hydrogen cut-off control valve 21, determine whether the furnace ignition is successful based on the flame sensor, and in response to yes, continue to execute the furnace ignition process, and in response to no, restore the current state of the ignition and charging branch and the hydrogen side pipeline branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; Open the second hydrogen cut-off control valve 35, determine whether the furnace ignition is successful based on the flame sensor, and in response to yes, continue to execute the furnace ignition process, and in response to no, restore the current state of the ignition and charging branch and the hydrogen side pipeline branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; Close the hydrogen exhaust control valve 24, and determine whether the furnace ignition is successful based on the flame sensor. In response to yes, continue to execute the furnace ignition process. In response to no, restore the current state of the ignition and charging branch and the hydrogen side pipeline branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; Open the hydrogen bypass control valve 20, and determine whether the ignition in the furnace is successful based on the flame sensor. In response to yes, continue to execute the ignition process in the furnace. In response to no, restore the current status of the ignition and charging branch and the hydrogen side pipeline branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; here it is further necessary to set the opening time of the hydrogen bypass control valve 20, which can be set to 15s.

[0043] Step S530, controlling the actions of the chlorine side pipeline branch, sequentially performing the actions of opening hydrogen delivery, closing chlorine evacuation, and opening chlorine bypass, and after each action, judging whether the furnace ignition is successful based on the flame sensor, and in response to yes, continuing to execute the furnace ignition process, and in response to no, restoring the current states of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to the state that meets the ignition preparation conditions, and withdrawing the ignition gun from the hydrogen chloride synthesis furnace; In this step, the actions of opening the chlorine gas cut-off control valve 28, closing the chlorine gas exhaust control valve 31, and opening the chlorine gas bypass control valve 27 are performed in sequence, which specifically include: Open the chlorine gas cut-off control valve 28, and judge whether the ignition in the furnace is successful based on the flame sensor. If yes, continue to execute the ignition process in the furnace. If no, restore the current states of the ignition gas charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to the state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; Close the chlorine gas exhaust control valve 31, determine whether the furnace ignition is successful based on the flame sensor, and in response to yes, continue to execute the furnace ignition process, and in response to no, restore the current states of the ignition gas charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to the state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; Open the chlorine bypass control valve 27, and determine whether the ignition in the furnace is successful based on the flame sensor. In response to yes, continue to execute the ignition process in the furnace. In response to no, restore the current status of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; here it is further necessary to set the opening time of the chlorine bypass control valve 27, which can be set to 15s.

[0044] Step S540, controls the action of the ignition and charging branch, and sequentially performs the actions of disconnecting the hydrogen solenoid valve, disconnecting the air solenoid valve, and closing the nitrogen solenoid valve and disconnecting after a set time, and after each action, determines whether the ignition in the furnace is successful based on the flame sensor, and in response to yes, continues to execute the ignition process in the furnace, and in response to no, restores the current status of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to a status that meets the ignition preparation conditions, and withdraws the ignition gun from the hydrogen chloride synthesis furnace.

[0045] This step specifically includes: Disconnect the hydrogen solenoid valve, determine whether the ignition in the furnace is successful based on the flame sensor, and in response to yes, continue to execute the ignition process in the furnace, and in response to no, restore the current states of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; Disconnect the air solenoid valve, determine whether the ignition in the furnace is successful based on the flame sensor, and in response to yes, continue to execute the ignition process in the furnace, and in response to no, restore the current states of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to the state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; The nitrogen solenoid valve is closed and then disconnected after a set time, and whether the ignition in the furnace is successful is determined based on the flame sensor. In response to yes, the furnace ignition process is continued. In response to no, the current states of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch are restored to states that meet the ignition preparation conditions, and the ignition gun is withdrawn from the hydrogen chloride synthesis furnace. Further, the set time here can be 3s, and then within 10s after the disconnection, it is determined based on the flame sensor whether the ignition in the furnace is successful.

[0046] In this embodiment, after the ignition in the furnace fails, the current states of the ignition gas branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch are restored to a state that meets the ignition preparation conditions, and the ignition gun is withdrawn from the hydrogen chloride synthesis furnace, specifically including: (1) Disconnect the hydrogen solenoid valve, disconnect the air solenoid valve, close the nitrogen solenoid valve and then disconnect after a set time (the set time can be 3s), then withdraw the ignition gun from the hydrogen chloride synthesis furnace, close the furnace door, and generate and send a hydrogen chloride synthesis furnace shutdown signal.

[0047] (2) Close the chlorine bypass control valve 27 and the hydrogen bypass control valve 20.

[0048] (3) Close the chlorine gas cut-off control valve 28.

[0049] (4) Close the hydrogen cut-off control valve.

[0050] Embodiment 8: The embodiment of the present invention is a further optimization of the above embodiment, which also includes obtaining an ignition emergency stop instruction, then restoring the current status of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition and charging branch and the ignition gun to a state that meets the ignition preparation conditions, and the ignition gun exits the hydrogen chloride synthesis furnace and closes the hydrogen chloride synthesis furnace door.

[0051] Embodiment 9: As attached Figure 5 As shown, the embodiment of the present invention discloses an automatic ignition system for a hydrogen chloride synthesis furnace, comprising: An automatic ignition device for a hydrogen chloride synthesis furnace, wherein the device comprises a hydrogen side pipeline branch, a chlorine side pipeline branch, a nitrogen purge branch, an ignition and charging branch, an ignition gun and a flame sensor, wherein the flame sensor is arranged on the ignition gun, and the specific structure is as described in the above embodiment; A control device for executing the automatic ignition method of the hydrogen synthesis furnace described in the above embodiment; The interactive device is used for the operator to communicate with the control device, so that the operator can view the automatic ignition control process of the hydrogen chloride synthesis furnace through the interactive unit and provide operating instructions to the device.

[0052] The interactive device includes a touch display screen, a node indicator light group and an operation button group; The touch screen displays the automatic ignition control process and intermediate execution results of the hydrogen chloride synthesis furnace, obtains the operator's operation instructions, and sends them to the control device, where the operation instructions include ignition preparation instructions, external ignition instructions, internal ignition instructions, and ignition emergency stop instructions; The node indicator light group displays the node information in the automatic ignition control process of the hydrogen chloride synthesis furnace, including the indicator light for completion of ignition preparation outside the furnace, the indicator light for successful ignition outside the furnace, the indicator light for failed ignition outside the furnace, the indicator light for completion of ignition preparation inside the furnace, the indicator light for successful ignition inside the furnace, and the indicator light for failed ignition inside the furnace; The operation button group generates and sends operation instructions, including the external ignition preparation button, the external ignition start button, the internal ignition preparation button, the internal ignition start button, and the ignition emergency stop button.

[0053] The interactive device here includes a touch display screen, a node indicator light group and an operation button group, providing two interactive modes to avoid lag in one of the interactive modes and provide guarantee for the stable operation of the automatic ignition method of the hydrogen chloride synthesis furnace.

[0054] The control device may be an electronic device, which may be applied to a DCS system, and includes a processor and a memory, wherein a computer program is stored in the memory, and the computer program is loaded and executed by the processor to realize the automatic ignition method of the hydrogen chloride synthesis furnace.

[0055] The processor may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an ASIC, an FPGA, or other programmable logic devices. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of the present invention. It may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The memory may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory, a mobile hard disk, a magnetic disk, or an optical disk.

[0056] It should be understood by those skilled in the art that the embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes. The solutions in the embodiments of the present invention may be implemented in various computer languages, for example, object-oriented programming language Java and interpreted scripting language JavaScript, etc.

[0057] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0058] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0059] The above content is only a specific implementation mode of the present invention, which has strong adaptability and implementation effect, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered within the protection scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A method for automatic ignition of a hydrogen chloride synthesis furnace, the method being applied to an automatic ignition device for a hydrogen chloride synthesis furnace, the automatic ignition device for a hydrogen chloride synthesis furnace comprising a hydrogen side pipeline branch, a chlorine side pipeline branch, a nitrogen purge branch, an ignition and charging branch, an ignition gun and a flame sensor, wherein the flame sensor is arranged on the ignition gun, and is characterized in that: The method comprises: Determine whether the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition gas charging branch and the ignition gun meet the ignition preparation conditions, wherein the ignition preparation conditions are set according to the safety requirements before the ignition of the hydrogen chloride synthesis furnace; In response to yes, it is determined whether the hydrogen content in the hydrogen chloride synthesis furnace is less than or equal to the threshold value; In response to the above, the nitrogen purge branch is controlled to purge the inside of the ignition gun, and after the purge, the igniter of the ignition gun is started, and the ignition charging branch is controlled to send hydrogen into the inside of the ignition gun to complete the ignition of the ignition gun outside the furnace; After the ignition gun is ignited, when the hydrogen content in the hydrogen chloride synthesis furnace is less than the threshold value, the ignition gun's igniter is stopped, and the flame outlet of the ignition gun is sent into the hydrogen chloride synthesis furnace; According to the set in-furnace ignition process, the actions of the hydrogen side pipeline branch, the chlorine side pipeline branch and the ignition and charging branch are controlled to execute the in-furnace ignition process, and when the in-furnace ignition fails during the execution of the in-furnace ignition process, the in-furnace ignition process is exited, and the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition and charging branch and the ignition gun are restored to a state that meets the ignition preparation conditions.

2. The automatic ignition method of a hydrogen chloride synthesis furnace according to claim 1, characterized in that: The ignition and charging branch circuit includes a hydrogen inlet pipeline, a nitrogen inlet pipeline and an air inlet pipeline, and the inlet ends of the hydrogen inlet pipeline, the nitrogen inlet pipeline and the air inlet pipeline are respectively provided with a hydrogen solenoid valve, a nitrogen solenoid valve and an air solenoid valve, and the outlets of the hydrogen inlet pipeline, the nitrogen inlet pipeline and the air inlet pipeline are all connected to the ignition gun; the ignition gun ignites outside the furnace, including: Close the air solenoid valve; The ignition gun is purged, and after the purging, the ignition gun's igniter is started, wherein the purging process is to control the nitrogen solenoid valve to close for a set time and then disconnect; Close the hydrogen solenoid valve and determine whether the ignition gun has ignited successfully within the external furnace ignition time threshold based on the data collected by the flame sensor; If the response is no, the hydrogen solenoid valve and the air solenoid valve are disconnected in sequence, and then the ignition gun is purged.

3. The automatic ignition method of a hydrogen chloride synthesis furnace according to claim 2, characterized in that: The method controls the actions of the hydrogen side pipeline branch, the chlorine side pipeline branch and the ignition and charging branch according to the set furnace ignition process to execute the furnace ignition process, including: Send the flame outlet of the ignition gun into the hydrogen chloride synthesis furnace for a set time, determine whether the ignition in the furnace is successful based on the flame sensor, and in response to yes, continue to execute the furnace ignition process, and in response to no, restore the current state of the ignition and gas charging branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; Control the actions of the hydrogen side pipeline branch, and sequentially open the hydrogen delivery, close the hydrogen exhaust, and open the hydrogen bypass. After each action, determine whether the furnace ignition is successful based on the flame sensor. If yes, continue to execute the furnace ignition process. If no, restore the current state of the ignition and charging branch and the hydrogen side pipeline branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace; Controlling the actions of the chlorine side pipeline branch, sequentially opening the hydrogen delivery, closing the chlorine gas exhaust, and opening the chlorine gas bypass, and after each action, judging whether the furnace ignition is successful based on the flame sensor, and in response to yes, continuing to execute the furnace ignition process, and in response to no, restoring the current states of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to a state that meets the ignition preparation conditions, and withdrawing the ignition gun from the hydrogen chloride synthesis furnace; Control the action of the ignition and charging branch, disconnect the hydrogen solenoid valve, disconnect the air solenoid valve and close the nitrogen solenoid valve and then disconnect it after the set time in sequence, and after each action, judge whether the ignition in the furnace is successful based on the flame sensor, and in response to yes, continue to execute the ignition process in the furnace, and in response to no, restore the current status of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch to a state that meets the ignition preparation conditions, and withdraw the ignition gun from the hydrogen chloride synthesis furnace.

4. The automatic ignition method of a hydrogen chloride synthesis furnace according to claim 3, characterized in that: The hydrogen side pipeline branch includes a hydrogen delivery pipeline, a hydrogen bypass pipeline, and a hydrogen exhaust pipeline. A hydrogen delivery control valve, a first hydrogen cut-off control valve, and a second hydrogen cut-off control valve are sequentially arranged on the hydrogen delivery pipeline along the hydrogen delivery direction. Both ends of the hydrogen bypass pipeline are respectively connected to the hydrogen delivery pipelines at both ends of the hydrogen delivery control valve. A hydrogen bypass control valve is arranged on the hydrogen bypass pipeline. One end of the hydrogen exhaust pipeline is connected to the hydrogen delivery pipeline between the hydrogen delivery control valve and the first hydrogen cut-off control valve. A hydrogen exhaust control valve and a hydrogen exhaust flowmeter are arranged on the hydrogen exhaust pipeline. The control of the hydrogen side pipeline branch action sequentially opens hydrogen delivery, closes hydrogen exhaust, and opens hydrogen bypass, and after each action, determines whether the furnace ignition is successful based on the flame sensor. Specifically, the actions of opening the first hydrogen cut-off control valve, opening the second hydrogen cut-off control valve, closing the hydrogen exhaust control valve, and opening the hydrogen bypass control valve are sequentially performed, and after each action, determines whether the furnace ignition is successful based on the flame sensor. In response to yes, the furnace ignition process continues to be executed. In response to no, the current state of the ignition and charging branch and the hydrogen side pipeline branch is restored to a state that meets the ignition preparation conditions, and the ignition gun is withdrawn from the hydrogen chloride synthesis furnace.

5. The automatic ignition method of a hydrogen chloride synthesis furnace according to claim 4, characterized in that: The chlorine side pipeline branch comprises a chlorine delivery pipeline, a chlorine bypass pipeline, and a chlorine exhaust pipeline. A chlorine delivery control valve and a chlorine cut-off control valve are sequentially arranged on the chlorine delivery pipeline along the chlorine delivery direction. Two ends of the chlorine bypass pipeline are respectively connected to the chlorine delivery pipelines at two ends of the chlorine delivery control valve. A chlorine bypass control valve is arranged on the chlorine bypass pipeline. One end of the chlorine exhaust pipeline is connected to the chlorine delivery pipeline between the chlorine delivery control valve and the chlorine cut-off control valve. A chlorine exhaust control valve and a chlorine exhaust flowmeter are arranged on the chlorine exhaust pipeline. The control of the chlorine side pipeline branch action sequentially opens the chlorine delivery, closes the chlorine exhaust, and opens the chlorine bypass, and after each action, determines whether the ignition in the furnace is successful based on the flame sensor. Specifically, the actions of opening the chlorine cut-off control valve, closing the chlorine exhaust control valve, and opening the chlorine bypass control valve are sequentially performed, and after each action, determines whether the ignition in the furnace is successful based on the flame sensor. In response to yes, the furnace ignition process continues to be executed. In response to no, the current states of the ignition and charging branch, the hydrogen side pipeline branch, and the chlorine side pipeline branch are restored to states that meet the ignition preparation conditions, and the ignition gun is withdrawn from the hydrogen chloride synthesis furnace.

6. The automatic ignition method of a hydrogen chloride synthesis furnace according to claim 5, characterized in that: The method also includes controlling the nitrogen purge branch to purge the hydrogen side pipeline branch and the chlorine side pipeline branch before judging whether the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition charging branch and the ignition gun meet the ignition preparation conditions, wherein the nitrogen purge branch includes a hydrogen nitrogen filling purge pipeline, a chlorine nitrogen filling purge pipeline, a nitrogen regulating pipeline, a first hydrogen nitrogen filling holding valve and a second hydrogen nitrogen filling holding valve, the hydrogen nitrogen filling purge pipeline is connected to the hydrogen delivery pipeline at the output end of the second hydrogen cut-off control valve, a hydrogen nitrogen filling control valve is arranged on the hydrogen nitrogen filling purge pipeline, and both ends of the nitrogen regulating pipeline are respectively connected to the hydrogen nitrogen filling purge pipeline and the first hydrogen cut-off control valve and the second hydrogen The hydrogen delivery pipeline between the cut-off control valves is connected, a hydrogen nitrogen charging regulating valve is arranged on the nitrogen regulating pipeline, one end of the first hydrogen nitrogen charging holding valve is connected to the hydrogen delivery pipeline between the hydrogen evacuation pipeline and the hydrogen delivery control valve, one end of the second hydrogen nitrogen charging holding valve is connected to the hydrogen delivery pipeline between the nitrogen regulating pipeline and the second hydrogen cut-off control valve, a pressure difference detection unit is connected between the other end of the first hydrogen nitrogen charging holding valve and the other end of the second hydrogen nitrogen charging holding valve, and automatic control is formed between the pressure difference detection unit and the hydrogen nitrogen charging regulating valve, a chlorine nitrogen charging purge pipeline is connected to the chlorine delivery pipeline at the output end of the chlorine cut-off control valve, and a chlorine nitrogen charging control valve is arranged on the chlorine nitrogen charging purge pipeline; The controlling of the nitrogen purge branch to purge the hydrogen side pipeline branch and the chlorine side pipeline branch comprises: Control the hydrogen nitrogen filling control valve and the chlorine nitrogen filling control valve to open, and purge the hydrogen delivery pipeline and the chlorine delivery pipeline; The hydrogen nitrogen filling regulating valve is controlled to open, and the hydrogen delivery pipeline between the first hydrogen cut-off control valve and the second hydrogen cut-off control valve is purged to keep the pressure difference detected by the pressure difference detection unit within a range greater than 5KPa.

7. The automatic ignition method of a hydrogen chloride synthesis furnace according to claim 6, characterized in that: The ignition preparation conditions include: Hydrogen side pipeline branch: After purging, the difference between the pressure between the hydrogen delivery control valve and the first hydrogen cut-off control valve and the pressure between the first hydrogen cut-off control valve and the second hydrogen cut-off control valve is greater than 5KPa. The hydrogen filling and nitrogen control valve is closed, the hydrogen delivery control valve is closed, the first hydrogen cut-off control valve is closed, the second hydrogen cut-off control valve is closed, the hydrogen exhaust control valve is opened, and the hydrogen bypass control valve is closed. Hydrogen exhaust flow rate is less than 5m 3 / h; Chlorine side pipeline branch: The chlorine gas nitrogen filling control valve is closed, the chlorine gas delivery control valve is closed, the chlorine gas cut-off control valve is closed, the chlorine gas exhaust control valve is opened, and the chlorine gas bypass control valve is closed. Chlorine gas exhaust flow rate is less than 5m 3 / h; Ignition charging branch: The ignition gun is located at the exit of the hydrogen chloride synthesis furnace and is in the flameout state. The hydrogen solenoid valve, nitrogen solenoid valve and air solenoid valve are all closed; Nitrogen purge branch: The hydrogen filling nitrogen regulating valve is open.

8. The automatic ignition method of a hydrogen chloride synthesis furnace according to claim 6, characterized in that: The automatic ignition device for the hydrogen chloride synthesis furnace also includes a furnace door control valve, which controls the furnace door control valve to open or close the furnace door of the hydrogen chloride synthesis furnace; or / and, When the ignition emergency stop command is obtained, the current states of the hydrogen side pipeline branch, the chlorine side pipeline branch, the nitrogen purge branch, the ignition charging branch and the ignition gun are restored to a state that meets the ignition preparation conditions, and the ignition gun exits the hydrogen chloride synthesis furnace and the hydrogen chloride synthesis furnace door is closed.

9. An automatic ignition system for a hydrogen chloride synthesis furnace, characterized in that: include: An automatic ignition device for a hydrogen chloride synthesis furnace, wherein the device comprises a hydrogen side pipeline branch, a chlorine side pipeline branch, a nitrogen purge branch, an ignition and charging branch, an ignition gun and a flame sensor, wherein the flame sensor is arranged on the ignition gun, and the specific structure is as described in claims 1 to 8; A control device for executing the automatic ignition method of the hydrogen synthesis furnace according to claims 1 to 8; The interactive device is used for the operator to communicate with the control device, so that the operator can view the automatic ignition control process of the hydrogen chloride synthesis furnace through the interactive unit and provide operating instructions to the device.

10. The automatic ignition system for hydrogen chloride synthesis furnace according to claim 9, characterized in that: The interactive device includes a touch display screen, a node indicator light group and an operation button group; The touch screen displays the automatic ignition control process and intermediate execution results of the hydrogen chloride synthesis furnace, obtains the operator's operation instructions, and sends them to the control device, where the operation instructions include ignition preparation instructions, external ignition instructions, internal ignition instructions, and ignition emergency stop instructions; The node indicator light group displays the node information in the automatic ignition control process of the hydrogen chloride synthesis furnace, including the indicator light for completion of ignition preparation outside the furnace, the indicator light for successful ignition outside the furnace, the indicator light for failed ignition outside the furnace, the indicator light for completion of ignition preparation inside the furnace, the indicator light for successful ignition inside the furnace, and the indicator light for failed ignition inside the furnace; The operation button group generates and sends operation instructions, including the external ignition preparation button, the external ignition start button, the internal ignition preparation button, the internal ignition start button, and the ignition emergency stop button.

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