Furnace ignition failure protection device for hydrogen chloride synthesis furnace
By introducing a chlorine bypass pipe, a hydrogen bypass pipe, and a nitrogen shut-off valve interlocked with a PLC controller in the hydrogen chloride synthesis furnace, the problems of gas leakage and equipment damage caused by furnace ignition failure were solved, achieving safe and reliable automated monitoring and handling, and ensuring production safety.
Patent Information
- Application Number
- CN202422653577.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-10-31
AI Technical Summary
In the process of hydrogen chloride synthesis, failure of manual ignition often leads to gas leakage, which endangers human health and the environment, and may also damage equipment. Existing technologies are difficult to effectively monitor and handle ignition failures.
A hydrogen chloride synthesis furnace ignition failure protection device was designed. Through the interlocking system of chlorine bypass pipe, hydrogen bypass pipe and nitrogen shut-off valve with PLC controller, the device can automatically monitor and handle ignition failure. This includes the linkage control of chlorine regulating valve, hydrogen regulating valve, chlorine ignition valve, hydrogen ignition valve and flame detector to ensure successful ignition and automatically cut off the gas supply in case of failure.
It effectively reduces the probability of ignition failure, ensures equipment safety, prevents gas leaks, protects personnel health and the environment, and forms a safe and reliable ignition failure handling system.
Smart Images
Figure CN223610171U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of chemical production, and particularly relates to a hydrogen chloride synthesis furnace point furnace failure protection device. BACKGROUND
[0002] In the current hydrogen chloride synthesis process of chemical industry, the main process is that the chlorine gas and hydrogen gas sent by the electrolysis post enter a chlorine gas buffer tank and a hydrogen gas buffer tank respectively, the hydrogen gas is stabilized by a hydrogen gas fire barrier, and the chlorine gas and hydrogen gas are mixed and combusted at a scientific ratio (chlorine gas: hydrogen gas = 1:1.05-1.1) at a graphite synthesis furnace quartz lamp head to generate hydrogen chloride gas, and the by-product steam generated by a synthesis furnace jacket is vented.
[0003] At present, in the daily production of hydrogen chloride synthesis, manual point furnace is needed, in the original design of the synthesis furnace, the nominal diameters of the hydrogen gas pipe and the chlorine gas pipe are large, the blind area of the valve is large, and it is difficult to realize accurate operation of the valve opening degree in the process of manual point furnace, and the situation of point furnace failure often occurs, the point furnace failure can cause leakage of the chlorine gas, hydrogen gas or other by-products which are not completely combusted in the furnace, these gases have serious harm to human health and the environment, and meanwhile, the point furnace failure can cause unstable temperature control in the furnace, local overheating or uneven cooling, and can cause thermal stress damage to the furnace material (such as heat-resistant steel, refractory material and the like), such as deformation, cracking or even rupture. UTILITY MODEL CONTENTS
[0004] The utility model provides a kind of hydrogen chloride synthesis furnace point furnace failure protection device to solve the problem that current point furnace failure is not easy to be found, can cause gas leakage, and seriously affect equipment, personnel safety and environment.
[0005] The technical scheme of the utility model is as follows: a kind of hydrogen chloride synthesis furnace point furnace failure protection device, including hydrogen chloride synthesis furnace, the gas inlet end of hydrogen chloride synthesis furnace is equipped with chlorine gas pipe and hydrogen gas pipe, chlorine gas regulating valve is installed on chlorine gas pipe, hydrogen gas regulating valve is installed on hydrogen gas pipe, it further includes chlorine gas bypass pipe and hydrogen gas bypass pipe, chlorine gas bypass pipe is connected at the two ends of chlorine gas regulating valve, chlorine gas ignition valve is installed on chlorine gas bypass pipe, hydrogen gas bypass pipe is connected at the two ends of hydrogen gas regulating valve, hydrogen gas ignition valve is installed on hydrogen gas bypass pipe, nitrogen gas pipe is further connected on the gas inlet end of hydrogen chloride synthesis furnace, nitrogen gas cut valve is installed on nitrogen gas pipe.
[0006] As a further improvement of the utility model, chlorine gas regulating valve, chlorine gas ignition valve, hydrogen gas regulating valve, hydrogen gas ignition valve and nitrogen gas cut valve are connected with PLC controller PLC controller, with the functions of audible and visual alarm and emergency cut-off.
[0007] As a further improvement of the utility model, the hydrogen chloride synthesis furnace is provided with a fire detector on the side wall, the fire detector corresponds to the position of the quartz lamp head in the hydrogen chloride synthesis furnace, the fire detector is connected with the PLC controller, and the fire detector is connected with the PLC controller through a signal to facilitate monitoring of information in the synthesis furnace.
[0008] The utility model discloses the beneficial effect is: the utility model constitutes interlock system through PLC controller and hydrogen ignition valve, chlorine ignition valve, nitrogen cut -out valve, fire detector, and the small -flow pipeline of bypass pipe helps synthesis furnace to utilize ignition success, and the probability of effectively reducing the failure of the stove failure; when the hydrogen chloride synthesis furnace is extinguished in the stove failure, automatically cut -out chlorine regulating valve, chlorine ignition valve, hydrogen regulating valve and hydrogen ignition valve, and simultaneously open nitrogen cut -out valve and carry out the purging of synthesis furnace, and the fire detector interlock alarm system in PLC controller sends audible -visual alarm, the utility model discloses stable operation, formed the security monitoring and one -key disposal system of hydrogen chloride synthesis furnace stove failure, guarantee the safe production of hydrogen chloride synthesis furnace, has very strong popularization value. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is the structural schematic diagram of the utility model.
[0010] In the drawing: 1-chlorine pipeline, 2-chlorine regulating valve, 3-chlorine bypass pipe, 4-chlorine ignition valve, 5-hydrogen pipeline, 6-hydrogen regulating valve, 7-hydrogen bypass pipe, 8-hydrogen ignition valve, 9-hydrogen chloride synthesis furnace, 10-quartz lamp head, 11-fire detector, 12-steam pipeline, 13-hydrogen chloride pipeline, 14-hydrogen chloride cooler, 15-nitrogen pipeline, 16-nitrogen cut -out valve, 17-PLC controller. DETAILED DESCRIPTION
[0011] The utility model will be further explained in detail in combination with the drawings and specific embodiments.
[0012] As Figure 1 Shown, a kind of hydrogen chloride synthesis furnace stove failure protection device, existing including hydrogen chloride synthesis furnace 9, the gas inlet end of hydrogen chloride synthesis furnace 9 is equipped with chlorine pipeline 1 and hydrogen pipeline 5, chlorine pipeline 1 is equipped with chlorine regulating valve 2, hydrogen pipeline 5 is equipped with hydrogen regulating valve 6.
[0013] A kind of hydrogen chloride synthesis furnace stove failure protection device further includes chlorine bypass pipe 3 and hydrogen bypass pipe 7, chlorine bypass pipe 3 is connected at the two ends of chlorine regulating valve 2, chlorine bypass pipe 3 is equipped with chlorine ignition valve 4, hydrogen bypass pipe 7 is connected at the two ends of hydrogen regulating valve 6, hydrogen bypass pipe 7 is equipped with hydrogen ignition valve 8, the gas inlet end of hydrogen chloride synthesis furnace 9 is also connected with nitrogen pipeline 15, nitrogen pipeline 15 is equipped with nitrogen cut -out valve 16.
[0014] The chlorine regulating valve 2, the chlorine ignition valve 4, the hydrogen regulating valve 6, the hydrogen ignition valve 8 and the nitrogen cut-off valve 16 are connected with the PLC controller 17.
[0015] The hydrogen chloride synthesis furnace 9 is provided with a fire detector 11 on the side wall, which corresponds to the position of the quartz lamp head 10 in the hydrogen chloride synthesis furnace 9. The fire detector 11 is connected with the PLC controller 17. The instrument accuracy grade of the fire detector 11 is at least 0.05 grade. The fire detector 11 has the functions of optical detection, feature recognition and real-time feedback, which facilitates the monitoring of the information in the synthesis furnace.
[0016] In use, all the pipes and fittings need to be pressurized and leak tested first. The pressure is about 0.1 MPA to avoid gas leakage. The PLC controller 17 is used to open the chlorine regulating valve 2 and the hydrogen regulating valve 6. The purity and content of hydrogen and chlorine in the gas inlet of the hydrogen chloride synthesis furnace 9 are analyzed. The chlorine purity is required to be greater than or equal to 85%, the hydrogen purity is required to be greater than or equal to 99%, and the hydrogen oxygen content is required to be less than or equal to 0.3%. The first time of starting the furnace needs to analyze the chlorine hydrogen content. After the above test items are qualified, the furnace is started. The PLC controller 17 is used to start the furnace program. When the fire detector 11 sends out the successful display of starting the furnace, the PLC controller 17 automatically controls the opening of the hydrogen ignition valve 8 and the chlorine ignition valve 4. The hydrogen chloride synthesis furnace 9 is abnormally extinguished. The fire detector 11 interlocks the PLC controller 17 to send out sound and light alarm. At the same time, the hydrogen ignition valve 8 and the chlorine ignition valve 4 are automatically cut off. The nitrogen cut-off valve 16 is opened to blow the synthesis furnace. The protection program of the failed starting of the furnace is completed.
Claims
1. A hydrogen chloride synthesis furnace point furnace failure protection device, comprising a hydrogen chloride synthesis furnace (9), the gas inlet end of the hydrogen chloride synthesis furnace (9) is provided with a chlorine gas pipeline (1) and a hydrogen gas pipeline (5), a chlorine gas regulating valve (2) is installed on the chlorine gas pipeline (1), and a hydrogen gas regulating valve (6) is installed on the hydrogen gas pipeline (5), characterized in that: Also include chlorine bypass pipe (3) and hydrogen bypass pipe (7), the chlorine bypass pipe (3) is connected at both ends of chlorine regulating valve (2), chlorine bypass pipe (3) is equipped with chlorine ignition valve (4), hydrogen bypass pipe (7) is connected at both ends of hydrogen regulating valve (6), hydrogen bypass pipe (7) is equipped with hydrogen ignition valve (8), the gas inlet end of hydrogen chloride synthesis furnace (9) is also connected with nitrogen pipeline (15), nitrogen pipeline (15) is equipped with nitrogen cut-off valve (16).
2. A point of failure protection device for a hydrogen chloride synthesis furnace as claimed in claim 1, characterized in that: The chlorine regulating valve (2), chlorine ignition valve (4), hydrogen regulating valve (6), hydrogen ignition valve (8) and nitrogen cut-off valve (16) are connected with the PLC controller (17).
3. A point of failure protection device for a hydrogen chloride synthesis furnace as claimed in claim 2, characterized in that: The hydrogen chloride synthesis furnace (9) is equipped with a fire detector (11) on the side wall, the fire detector (11) corresponds to the position of the quartz lamp holder (10) in the hydrogen chloride synthesis furnace (9), and the fire detector (11) is connected with the PLC controller (17).