Automatic ignition device of hydrogen chloride synthetic furnace

Abstract

The utility model relates to the technical field of ignition of hydrogen chloride synthetic furnaces, in particular to an automatic ignition device of a hydrogen chloride synthetic furnace, which comprises the hydrogen chloride synthetic furnace, a chlorine buffer tank and a hydrogen buffer tank, a gas inlet sleeve is fixedly communicated with the bottom of the hydrogen chloride synthetic furnace, a gas inlet inner pipe is arranged in the gas inlet sleeve, and a quartz lamp holder is fixedly communicated with the top of the gas inlet inner pipe. A chlorine conveying pipeline is fixedly communicated between a top gas outlet of the chlorine buffer tank and a bottom gas inlet of the gas inlet sleeve, a hydrogen conveying pipeline is fixedly communicated between a top gas outlet of the hydrogen buffer tank and a lower gas inlet of the gas inlet sleeve, and an upper gas outlet of the hydrogen chloride synthesis furnace is fixedly communicated with a hydrogen chloride conveying pipeline; the lower part of the hydrogen chloride synthesis furnace is fixedly communicated with an ignition furnace tube. The device is reasonable and compact in structure and convenient to use, improves the success rate of ignition, reduces the occurrence rate of production accidents, realizes full automation of ignition of the hydrogen chloride synthetic furnace, and has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of ignition of a hydrogen chloride synthesis furnace, and is an automatic ignition device for a hydrogen chloride synthesis furnace. Background Art

[0002] The main reaction in producing hydrogen chloride gas is the chemical reaction of chlorine and hydrogen. Under suitable conditions (such as light, combustion or catalyst), chlorine and hydrogen will quickly combine. The reaction formula is as follows: Cl2+H2=2HCl. Use an ignition rod to insert into the hydrogen chloride synthesis furnace for ignition. Hydrogen and chlorine will undergo a combustion reaction with the quartz lamp holder in the hydrogen chloride synthesis furnace as a catalyst to generate hydrogen chloride gas.

[0003] The existing hydrogen chloride synthesis furnace device of the 1# / 2# device in the electrolysis workshop of a certain factory is manually ignited. Before the hydrogen chloride synthesis furnace is started, 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, and a bottom-up airflow is formed in the hydrogen chloride synthesis furnace. A blind plate is installed on the hydrogen pipeline entering the hydrogen chloride synthesis furnace, and the hydrogen content in the hydrogen chloride synthesis furnace is continuously sampled and analyzed. When the hydrogen content is less than 0.07% for two consecutive times, the ignition rod is manually inserted into the hydrogen chloride synthesis furnace, the hydrogen pipeline blind plate is removed, and the valve of the hydrogen bypass pipeline is manually opened to introduce a small amount of hydrogen into the hydrogen chloride synthesis furnace. When the hydrogen in the hydrogen chloride synthesis furnace begins to burn, the valve of the chlorine bypass pipeline is manually opened to introduce chlorine into the hydrogen chloride synthesis furnace. At this time, hydrogen and chlorine burn normally, that is, ignition is successful, and then the ignition rod is taken out, and the ignition control valve is manually closed, and the ignition of the hydrogen chloride synthesis furnace is completed. The above operations are all manually operated by the staff. The following problems exist during operation:

[0004] First, before the ignition of the hydrogen chloride synthesis furnace, during the replacement and purging process of the hydrogen and chlorine gas pipelines, the operator manually opened and closed the replacement valve. The valve opening size had a great influence on the system pressure, seriously affecting the stability of the start-up system.

[0005] Second, when the operator extends the ignition rod to the hydrogen chloride synthesis furnace, the hydrogen and chlorine pipelines may leak internally, and the residual gas in the hydrogen and chlorine pipelines enters the hydrogen chloride synthesis furnace. The residual hydrogen in the hydrogen chloride synthesis furnace will flash and explode, eventually causing casualties and equipment damage. To avoid this, a blind plate needs to be installed on the hydrogen pipeline entering the synthesis furnace. If the hydrogen pipeline valve leaks internally when the blind plate is removed, it will also cause flashback and injury, posing a greater safety risk.

[0006] Third, when the hydrogen chloride synthesis furnace is ignited, the operator manually opens the hydrogen bypass pipeline valve. If the valve is opened too quickly, a large amount of replacement nitrogen in the hydrogen pipeline will enter the hydrogen chloride synthesis furnace, causing the flame of the ignition rod to go out, and ultimately the hydrogen chloride synthesis furnace will fail to ignite.

[0007] Fourth, after the hydrogen chloride synthesis furnace is successfully ignited, the operator manually closes the ignition valve and seals the valve outlet pipe. If the system in the furnace fluctuates abnormally, the flame will spray out from the ignition valve and cause burns and poisoning to the operator. If the valve outlet pipe is not sealed tightly, hydrogen chloride leakage will occur later, increasing the frequency of equipment maintenance and seriously affecting the long-term stable operation of the synthesis furnace.

[0008] The above problems lead to low production efficiency and high operation risk of enterprises. Therefore, it is necessary to innovate the ignition process of hydrogen chloride synthesis furnace to solve the above problems. Summary of the invention

[0009] The utility model provides an automatic ignition device for a hydrogen chloride synthesis furnace, which overcomes the deficiencies of the prior art and can effectively solve the problems of high operation risk factor and low efficiency during ignition of the prior hydrogen chloride synthesis furnace.

[0010] The technical scheme of the utility model is achieved through the following measures: an automatic ignition device for a hydrogen chloride synthesis furnace comprises a hydrogen chloride synthesis furnace, a chlorine buffer tank and a hydrogen buffer tank, the bottom of the hydrogen chloride synthesis furnace is fixedly connected with an air inlet sleeve, an air inlet inner tube is arranged inside the air inlet sleeve, the top of the air inlet inner tube is fixedly connected with a quartz lamp holder, the lower air inlet of the hydrogen buffer tank is fixedly connected with a hydrogen air inlet pipeline, the lower air inlet of the chlorine buffer tank is fixedly connected with a chlorine air inlet pipeline, a chlorine delivery pipeline is fixedly connected between the top air outlet of the chlorine buffer tank and the bottom air inlet of the air inlet sleeve, a hydrogen delivery pipeline is fixedly connected between the top air outlet of the hydrogen buffer tank and the lower air inlet of the air inlet sleeve, a hydrogen delivery pipeline is fixedly connected between the top air outlet of the hydrogen buffer tank and the lower air inlet of the air inlet sleeve, a hydrogen delivery pipeline is fixedly connected with the upper air outlet of the hydrogen chloride synthesis furnace, a falling film absorption pipeline is fixedly connected on the hydrogen chloride delivery pipeline, and an ignition furnace tube is fixedly connected at the lower part of the hydrogen chloride synthesis furnace.

[0011] The following are further optimizations and / or improvements to the above utility model technical solution:

[0012] An ignition control valve is fixedly installed on the ignition furnace tube, a hydrogen chloride delivery control valve is fixedly installed on the hydrogen chloride delivery pipeline between the falling film absorption pipeline and the hydrogen chloride delivery pipeline outlet, and a falling film absorption control valve is fixedly installed on the falling film absorption pipeline.

[0013] The hydrogen delivery pipeline is fixedly connected with a first nitrogen purge pipeline, the first nitrogen purge pipeline is fixedly connected with the chlorine delivery pipeline, a second nitrogen purge pipeline is fixedly connected with the first nitrogen purge pipeline, a first nitrogen control valve is fixedly installed on the first nitrogen purge pipeline between the second nitrogen purge pipeline and the hydrogen delivery pipeline, and a second nitrogen control valve is fixedly installed on the second nitrogen purge pipeline.

[0014] A hydrogen delivery control valve is fixedly installed on the hydrogen delivery pipeline between the top gas outlet of the above-mentioned hydrogen buffer tank and the first nitrogen purge pipeline, and a hydrogen bypass pipeline is fixedly connected to the hydrogen delivery pipeline between the inlet and outlet of the hydrogen delivery control valve, and a hydrogen bypass control valve is fixedly installed on the hydrogen bypass pipeline.

[0015] A hydrogen cut-off control valve is fixedly installed on the hydrogen delivery pipeline between the hydrogen bypass pipeline outlet and the air inlet casing.

[0016] A hydrogen exhaust pipeline is fixedly connected to the hydrogen delivery pipeline between the hydrogen delivery control valve and the hydrogen bypass pipeline outlet, and a hydrogen exhaust flowmeter and a hydrogen exhaust control valve are fixedly installed in sequence on the hydrogen exhaust pipeline along the medium flow direction.

[0017] A chlorine gas delivery control valve is fixedly installed on the chlorine gas delivery pipeline between the top gas outlet of the chlorine gas buffer tank and the second nitrogen purge pipeline, a chlorine gas bypass pipeline is fixedly connected to the chlorine gas delivery pipeline between the inlet and the outlet of the chlorine gas delivery control valve, and a chlorine gas bypass control valve is fixedly installed on the chlorine gas bypass pipeline.

[0018] A chlorine gas cut-off control valve is fixedly installed on the chlorine gas delivery pipeline between the chlorine gas bypass pipeline outlet and the air inlet casing.

[0019] A chlorine exhaust pipeline is fixedly connected to the chlorine delivery pipeline between the chlorine delivery control valve and the chlorine bypass pipeline outlet, and a chlorine exhaust flow meter and a chlorine exhaust control valve are fixedly installed in sequence on the chlorine exhaust pipeline along the medium flow direction.

[0020] The above-mentioned ignition control valve, the first nitrogen control valve, the second nitrogen control valve, the hydrogen delivery control valve, the hydrogen bypass control valve, the hydrogen cut-off control valve, the hydrogen exhaust flowmeter, the hydrogen exhaust control valve, the chlorine delivery control valve, the chlorine bypass control valve, the chlorine cut-off control valve, the chlorine exhaust flowmeter, the chlorine exhaust control valve, the hydrogen chloride delivery control valve, and the falling film absorption control valve are all electrically connected to the controller.

[0021] The utility model discloses the ignition of hydrogen chloride synthesis furnace is fully automatic, has the advantages of safety, labor saving, simplicity and high efficiency, and has the advantages of simple structure, convenient operation and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 This is a schematic diagram of the process flow of the utility model.

[0023] Attached Figure 1The 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 an ignition control valve, 12 is a hydrogen inlet pipeline, 13 is a chlorine inlet pipeline, 14 is a first nitrogen purge pipeline, 15 is a second nitrogen purge pipeline, 16 is a first nitrogen control valve, 17 is a second nitrogen control valve, 18 is a hydrogen delivery control valve, Valve, 19 is a hydrogen bypass pipeline, 20 is a hydrogen bypass control valve, 21 is a hydrogen cut-off control valve, 22 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, and 34 is a falling film absorption control valve. DETAILED DESCRIPTION

[0024] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0025] In the present invention, unless otherwise specified, the equipment and devices used are all the equipment and devices known and used in the art.

[0026] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 The layout direction is determined by the

[0027] The present invention is further described below in conjunction with the embodiments and drawings:

[0028] Embodiment 1: As attached Figure 1As shown, the automatic ignition device of the hydrogen chloride synthesis furnace comprises a hydrogen chloride synthesis furnace 1, a chlorine buffer tank 2, and a hydrogen buffer tank 3. The bottom of the hydrogen chloride synthesis furnace 1 is fixedly connected with an air inlet sleeve 4, an air inlet inner tube 5 is arranged inside the air inlet sleeve 4, and a quartz lamp holder 6 is fixedly connected to the top of the air inlet inner tube 5. The lower air inlet of the hydrogen buffer tank 3 is fixedly connected with a hydrogen air inlet pipeline 12, the lower air inlet of the chlorine buffer tank 2 is fixedly connected with a chlorine air inlet pipeline 13, a chlorine delivery pipeline 7 is fixedly connected between the top air outlet of the chlorine buffer tank 2 and the bottom air inlet of the air inlet sleeve 4, a hydrogen delivery pipeline 8 is fixedly connected between the top air outlet of the hydrogen buffer tank 3 and the lower air inlet of the air inlet sleeve 4, a hydrogen delivery pipeline 9 is fixedly connected to the upper air outlet of the hydrogen chloride synthesis furnace 1, a falling film absorption pipeline 32 is fixedly connected to the hydrogen chloride delivery pipeline 9, and an ignition furnace tube 10 is fixedly connected to the lower part of the hydrogen chloride synthesis furnace 1.

[0029] As required, the air inlet sleeve 4 and the air inlet inner tube 5 are arranged as concentric circles. 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. 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.

[0030] The automatic ignition device of the hydrogen chloride synthesis furnace can be further optimized and / or improved according to actual needs:

[0031] As attached Figure 1 As shown, an ignition control valve 11 is fixedly installed on the ignition furnace tube 10, a hydrogen chloride delivery control valve 33 is fixedly installed on the hydrogen chloride delivery pipeline 9 between the falling film absorption pipeline 32 and the outlet of the hydrogen chloride delivery pipeline 9, and a falling film absorption control valve 34 is fixedly installed on the falling film absorption pipeline 32.

[0032] As attached Figure 1 As shown, the hydrogen delivery pipeline 8 is fixedly connected with a first nitrogen purge pipeline 14, the first nitrogen purge pipeline 14 is fixedly connected with the chlorine delivery pipeline 7, a second nitrogen purge pipeline 15 is fixedly connected with the first nitrogen purge pipeline 14 between the second nitrogen purge pipeline 15 and the hydrogen delivery pipeline 8, and a second nitrogen control valve 17 is fixedly installed on the second nitrogen purge pipeline 15.

[0033] As required, before the hydrogen chloride synthesis furnace 1 is automatically ignited, the device system may be purged with nitrogen through the first nitrogen purge line 14 and the second nitrogen purge line 15 in consideration of the influence of the residual mixed gas in the device system on the ignition of the hydrogen chloride synthesis furnace 1 .

[0034] According to needs, before the hydrogen chloride synthesis furnace 1 is automatically ignited, after the nitrogen purge of the device system is completed, the downstream falling film absorption process system draws negative pressure to 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.

[0035] As attached Figure 1 As shown, a hydrogen delivery control valve 18 is fixedly installed on the hydrogen delivery pipeline 8 between the top outlet of the hydrogen buffer tank 3 and the first nitrogen purge pipeline 14, a hydrogen bypass pipeline 19 is fixedly connected to the hydrogen delivery pipeline 8 between the inlet and outlet of the hydrogen delivery control valve 18, and a hydrogen bypass control valve 20 is fixedly installed on the hydrogen bypass pipeline 19.

[0036] As attached Figure 1 As shown, a hydrogen cut-off control valve 21 is fixedly installed on the hydrogen delivery pipeline 8 between the outlet of the hydrogen bypass pipeline 19 and the air inlet casing 4 .

[0037] As attached Figure 1 As shown, a hydrogen exhaust pipeline 22 is fixedly connected to the hydrogen delivery pipeline 8 between the hydrogen delivery control valve 18 and the outlet of the hydrogen bypass pipeline 19, and a hydrogen exhaust flowmeter 23 and a hydrogen exhaust control valve 24 are fixedly installed in sequence on the hydrogen exhaust pipeline 22 along the medium flow direction.

[0038] As attached Figure 1 As shown, a chlorine delivery control valve 25 is fixedly installed on the chlorine delivery pipeline 7 between the top gas outlet of the chlorine buffer tank 2 and the second nitrogen purge pipeline 15, a chlorine bypass pipeline 26 is fixedly connected to the chlorine delivery pipeline 7 between the inlet and the outlet of the chlorine delivery control valve 25, and a chlorine bypass control valve 27 is fixedly installed on the chlorine bypass pipeline 26.

[0039] As attached Figure 1 As shown, a chlorine gas cut-off control valve 28 is fixedly installed on the chlorine gas delivery pipeline 7 between the outlet of the chlorine gas bypass pipeline 26 and the gas inlet casing 4 .

[0040] As attached Figure 1 As shown, a chlorine exhaust pipeline 29 is fixedly connected to the chlorine delivery pipeline 7 between the chlorine delivery control valve 25 and the outlet of the chlorine bypass pipeline 26, and a chlorine exhaust flow meter 30 and a chlorine exhaust control valve 31 are fixedly installed in sequence on the chlorine exhaust pipeline 29 along the flow direction of the medium.

[0041] As attached Figure 1As shown, the ignition control valve 11, the first nitrogen control valve 16, the second nitrogen control valve 17, the hydrogen delivery control valve 18, the hydrogen bypass control valve 20, the hydrogen cut-off control valve 21, the hydrogen exhaust flowmeter 23, the hydrogen exhaust control valve 24, the chlorine delivery control valve 25, the chlorine bypass control valve 27, the chlorine cut-off control valve 28, the chlorine exhaust flowmeter 30, the chlorine exhaust control valve 31, the hydrogen chloride delivery control valve 33, and the falling film absorption control valve 34 are all electrically connected to the controller.

[0042] According to the needs, before the hydrogen chloride synthesis furnace 1 is ignited, the hydrogen cut-off control valve 21 and the chlorine cut-off control valve 28 are selected to replace the blind plate cut-off in the original process. The cut-off type control valve can prevent the gas leakage in the pipeline and completely prevent the residual gas in the hydrogen delivery pipeline 8 and the chlorine delivery pipeline 7 from entering the hydrogen chloride synthesis furnace 1.

[0043] According to the needs, the controller can be a DCS controller, and the model of the DCS controller can be a CS3000 controller produced by Yokogawa Corporation of Japan. The pipelines and equipment of the automatic ignition device of the hydrogen chloride synthesis furnace can also be provided with conventional valves, thermometers and pressure gauges known in the art according to production needs.

[0044] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

[0045] The use process of the embodiment of the utility model is as follows: first, before the hydrogen chloride synthesis furnace 1 is automatically ignited, nitrogen is input into the device system through the first nitrogen purge pipeline 14 and the second nitrogen purge pipeline 15 for purge, the residual gas in the hydrogen chloride synthesis furnace 1 is discharged from the device system through the hydrogen chloride delivery pipeline 9 and the falling film absorption pipeline 32, and the residual gas in the chlorine delivery pipeline 7 and the hydrogen delivery pipeline 8 is discharged from the device system through the hydrogen emptying pipeline 22 and the chlorine emptying pipeline 29; then, after the nitrogen purge of the device system is qualified, the downstream falling film absorption process system draws negative pressure to the hydrogen chloride synthesis furnace 1 through the hydrogen chloride delivery pipeline 9 and the falling film absorption pipeline 32, and a bottom-up airflow is formed in the hydrogen chloride synthesis furnace 1; finally, the hydrogen in the hydrogen buffer tank 3 is introduced into the hydrogen chloride synthesis furnace 1 through the hydrogen delivery pipeline 8 and the hydrogen bypass pipeline 19. Low-pressure hydrogen. At this time, the staff inserts the ignition rod (fire source) into the ignition furnace tube 10. When the hydrogen in the lower part of the hydrogen chloride synthesis furnace 1 begins to burn, the chlorine in the chlorine buffer tank 2 enters the hydrogen chloride synthesis furnace 1 through the chlorine delivery pipeline 7 and the chlorine bypass pipeline 26. The hydrogen and chlorine in the hydrogen chloride synthesis furnace 1 burn to generate hydrogen chloride gas, which is transported to the downstream process through the hydrogen chloride delivery pipeline 9 for use.

Claims

1. An automatic ignition device for a hydrogen chloride synthesis furnace, characterized in that The invention comprises a hydrogen chloride synthesis furnace, a chlorine buffer tank and a hydrogen buffer tank. The bottom of the hydrogen chloride synthesis furnace is fixedly connected with an air inlet sleeve, an air inlet inner tube is arranged inside the air inlet sleeve, the top of the air inlet inner tube is fixedly connected with a quartz lamp holder, the lower air inlet of the hydrogen buffer tank is fixedly connected with a hydrogen air inlet pipeline, the lower air inlet of the chlorine buffer tank is fixedly connected with a chlorine air inlet pipeline, a chlorine delivery pipeline is fixedly connected between the top air outlet of the chlorine buffer tank and the bottom air inlet of the air inlet sleeve, a hydrogen delivery pipeline is fixedly connected between the top air outlet of the hydrogen buffer tank and the lower air inlet of the air inlet sleeve, the upper air outlet of the hydrogen chloride synthesis furnace is fixedly connected with a hydrogen chloride delivery pipeline, the hydrogen chloride delivery pipeline is fixedly connected with a falling film absorption pipeline, and the lower part of the hydrogen chloride synthesis furnace is fixedly connected with an ignition furnace tube.

2. The automatic ignition device for hydrogen chloride synthesis furnace according to claim 1, characterized in that An ignition control valve is fixedly installed on the ignition furnace tube, a hydrogen chloride delivery control valve is fixedly installed on the hydrogen chloride delivery pipeline between the falling film absorption pipeline and the hydrogen chloride delivery pipeline outlet, and a falling film absorption control valve is fixedly installed on the falling film absorption pipeline.

3. The automatic ignition device for a hydrogen chloride synthesis furnace according to claim 1 or 2, characterized in that A first nitrogen purge pipeline is fixedly connected to the hydrogen delivery pipeline, a second nitrogen purge pipeline is fixedly connected between the first nitrogen purge pipeline and the chlorine delivery pipeline, a first nitrogen control valve is fixedly installed on the first nitrogen purge pipeline between the second nitrogen purge pipeline and the hydrogen delivery pipeline, and a second nitrogen control valve is fixedly installed on the second nitrogen purge pipeline.

4. The automatic ignition device for hydrogen chloride synthesis furnace according to claim 3, characterized in that A hydrogen delivery control valve is fixedly installed on the hydrogen delivery pipeline between the top gas outlet of the hydrogen buffer tank and the first nitrogen purge pipeline, a hydrogen bypass pipeline is fixedly connected to the hydrogen delivery pipeline between the inlet and outlet of the hydrogen delivery control valve, and a hydrogen bypass control valve is fixedly installed on the hydrogen bypass pipeline.

5. The automatic ignition device for hydrogen chloride synthesis furnace according to claim 4, characterized in that A hydrogen cut-off control valve is fixedly installed on the hydrogen delivery pipeline between the hydrogen bypass pipeline outlet and the air inlet casing.

6. The automatic ignition device for a hydrogen chloride synthesis furnace according to claim 4 or 5, characterized in that A hydrogen exhaust pipeline is fixedly connected to the hydrogen delivery pipeline between the hydrogen delivery control valve and the hydrogen bypass pipeline outlet, and a hydrogen exhaust flowmeter and a hydrogen exhaust control valve are fixedly installed in sequence on the hydrogen exhaust pipeline along the medium flow direction.

7. The automatic ignition device for hydrogen chloride synthesis furnace according to claim 6, characterized in that A chlorine gas delivery control valve is fixedly installed on the chlorine gas delivery pipeline between the top gas outlet of the chlorine gas buffer tank and the second nitrogen purge pipeline, a chlorine gas bypass pipeline is fixedly connected to the chlorine gas delivery pipeline between the inlet and the outlet of the chlorine gas delivery control valve, and a chlorine gas bypass control valve is fixedly installed on the chlorine gas bypass pipeline.

8. The automatic ignition device for hydrogen chloride synthesis furnace according to claim 7, characterized in that A chlorine gas cut-off control valve is fixedly installed on the chlorine gas delivery pipeline between the chlorine gas bypass pipeline outlet and the air inlet casing.

9. The automatic ignition device for a hydrogen chloride synthesis furnace according to claim 7 or 8, characterized in that A chlorine exhaust pipeline is fixedly connected to the chlorine delivery pipeline between the chlorine delivery control valve and the chlorine bypass pipeline outlet, and a chlorine exhaust flow meter and a chlorine exhaust control valve are fixedly installed in sequence on the chlorine exhaust pipeline along the medium flow direction.

10. The automatic ignition device for a hydrogen chloride synthesis furnace according to claim 9, characterized in that The ignition control valve, the first nitrogen control valve, the second nitrogen control valve, the hydrogen delivery control valve, the hydrogen bypass control valve, the hydrogen cut-off control valve, the hydrogen exhaust flowmeter, the hydrogen exhaust control valve, the chlorine delivery control valve, the chlorine bypass control valve, the chlorine cut-off control valve, the chlorine exhaust flowmeter, the chlorine exhaust control valve, the hydrogen chloride delivery control valve, and the falling film absorption control valve are all electrically connected to the controller.

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