Automatic furnace extinguishing protection device for hydrogen chloride graphite synthesis furnace
By introducing an interlocking system of flame detector, hydrogen regulating valve, chlorine regulating valve and nitrogen replacement valve into the hydrogen chloride graphite synthesis furnace, the problem of not being able to block the input of hydrogen and chlorine when the flame is extinguished is solved, thus achieving safe production and preventing explosions.
Patent Information
- Application Number
- CN202422653568.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing hydrogen chloride graphite synthesis furnaces cannot stop the input of hydrogen and chlorine when the flame is extinguished, which can easily cause the mixed gas to reach the explosion limit and pose an explosion risk.
An interlocking system is formed by a flame detector, a hydrogen regulating valve, a chlorine regulating valve, a nitrogen purging valve, and a PLC controller to monitor the combustion status in real time. When the flame is extinguished, the hydrogen and chlorine valves are automatically closed, and nitrogen is introduced to purge the gas mixture to prevent it from reaching the explosion limit.
It enables safety monitoring of the hydrogen chloride synthesis furnace, prevents explosions, ensures production safety, and has strong promotional value.
Smart Images
Figure CN223525600U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of chemical production, concretely relates to a hydrogen chloride graphite synthetic furnace automatic extinguishing protection device. BACKGROUND
[0002] In the current hydrogen chloride synthesis process, the main process is that the chlorine gas and hydrogen gas sent by the electrolysis post enter the chlorine gas buffer tank and hydrogen gas buffer tank respectively, the hydrogen gas damper stabilizes the pressure, and the chlorine gas and hydrogen gas are mixed and combusted at the quartz lamp head of the graphite synthetic furnace according to scientific proportioning (chlorine gas: hydrogen gas = 1:1.05~1.1) to generate hydrogen chloride gas, and the by-product steam generated by the synthetic furnace jacket is vented.
[0003] At present, in the hydrogen chloride synthesis process, chlorine gas is used as a combustion-supporting material, hydrogen gas is used as a combustible material, and stable combustion can be achieved according to scientific proportioning (chlorine gas: hydrogen gas = 1:1.05~1.1) to generate hydrogen chloride gas for subsequent use, but in daily production, the automatic extinguishing phenomenon caused by chlorine gas and hydrogen gas pressure fluctuation during the operation of the synthetic furnace is relatively common, and if the on-site operator fails to discover it in time, the hydrogen gas and chlorine gas will continue to be sent into the furnace after the synthetic furnace is extinguished, and the hydrogen gas and chlorine gas mixture is explosive within a certain concentration range, which means that if the two are mixed in a specific proportion to reach the explosion limit, an explosion will occur when encountering high temperature, open flame or appropriate ignition source in the furnace, leading to the destruction of the synthetic furnace and the attached equipment and facilities, and easily causing personnel injury and property loss. CONTENT OF THE UTILITY MODEL
[0004] The utility model provides a kind of hydrogen chloride graphite synthetic furnace automatic extinguishing protection device to solve the problem that there is no safety protection facility in the existing hydrogen chloride graphite synthetic furnace, and the input of hydrogen gas and chlorine gas cannot be blocked when flame in the furnace is extinguished, and explosion is prone to occur.
[0005] The technical scheme of the utility model is as follows: a kind of hydrogen chloride graphite synthetic furnace automatic extinguishing protection device, including hydrogen chloride synthesis furnace, quartz lamp head is arranged in hydrogen chloride synthesis furnace, gas inlet of hydrogen chloride synthesis furnace is equipped with chlorine gas pipeline and hydrogen gas pipeline, chlorine gas regulating valve is arranged on chlorine gas pipeline, hydrogen gas regulating valve is arranged on hydrogen gas pipeline, further including PLC controller and fire detector, fire detector is installed on quartz lamp head cylinder body, and PLC controller is connected with chlorine gas regulating valve, hydrogen gas regulating valve and fire detector.
[0006] As a further improvement of the utility model, two fire detectors are arranged, and the two fire detectors are symmetrically installed on the quartz lamp head cylinder body, so as to facilitate monitoring the information in the synthetic furnace.
[0007] As a further improvement of the utility model, nitrogen gas pipeline is further arranged at the gas inlet of the hydrogen chloride synthesis furnace, and nitrogen gas displacement valve is arranged on the nitrogen gas pipeline.
[0008] As a further improvement of the utility model, the nitrogen replacement valve is connected with the PLC controller.
[0009] The utility model discloses the beneficial effect is: the utility model discloses through fire detector, hydrogen gas regulating valve, chlorine gas regulating valve, nitrogen replacement valve and PLC controller form interlock system, single fire detector sends flame extinguishing signal in the operation process, and PLC system sends audible and visual alarm and reminds the staff to check, two fire detectors send flame extinguishing signal simultaneously in the operation process, and the alarm system in PLC controller sends audible and visual alarm, closes hydrogen gas regulating valve, chlorine gas regulating valve simultaneously, opens nitrogen replacement valve, and the system is automatic to the hydrogen chloride synthesis furnace and fills in nitrogen replacement, so as to prevent hydrogen, chlorine gas mixture gas reaches the explosion limit, the utility model discloses stable operation, forms hydrogen chloride synthesis furnace safety monitoring system, guarantees the safe production of hydrogen chloride synthesis furnace, has very strong popularization value. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is structure schematic diagram of the utility model.
[0011] In the drawing: 1-hydrogen chloride synthesis furnace, 2-quartz lamp holder, 3-chlorine gas regulating valve, 4-hydrogen gas regulating valve, 5-nitrogen replacement valve, 6-PLC controller, 7-steam release pipe, 8-hydrogen chloride output pipeline, 9-hydrogen chloride cooler, 10-chlorine pipeline, 11-hydrogen pipeline, 12-nitrogen pipeline, 13-fire detector. DETAILED DESCRIPTION
[0012] The utility model will be further explained in detail in combination with the drawings and specific implementation.
[0013] As Figure 1 Shown, a kind of hydrogen chloride graphite synthesis furnace automatic extinguishing protection device, existing and including hydrogen chloride synthesis furnace 1, hydrogen chloride synthesis furnace 1 is equipped with quartz lamp holder 2, the gas inlet of hydrogen chloride synthesis furnace 1 is equipped with chlorine pipeline 10 and hydrogen pipeline 11, chlorine pipeline 10 is equipped with chlorine gas regulating valve 3, hydrogen pipeline 11 is equipped with hydrogen gas regulating valve 4.
[0014] A kind of hydrogen chloride graphite synthesis furnace automatic extinguishing protection device further includes PLC controller 6 and fire detector 13, fire detector 13 is installed on the cylinder of quartz lamp holder 2, and PLC controller 6 is connected with chlorine gas regulating valve 3, hydrogen gas regulating valve 4 and fire detector 13.
[0015] Fire detector 13 is equipped with two, two fire detectors 13 are symmetrically installed on the cylinder of quartz lamp holder 2, and the instrument accuracy grade of fire detector is at least 0.05 level, has optical detection, feature recognition, real-time feedback etc., and it is convenient to monitor information in synthesis furnace.
[0016] The hydrogen chloride synthesis furnace 1 is further provided with a nitrogen pipeline 12 at the gas inlet, and the nitrogen pipeline 12 is provided with a nitrogen replacement valve 5.
[0017] The nitrogen replacement valve 5 is connected with a PLC controller 6.
[0018] In use, all pipeline pipes need to be pressurized and leaked first, and the pressure is about 0.1MPA, so as to avoid gas leakage. The PLC controller 6 is controlled to open the chlorine control valve 3 and the hydrogen control valve 4. The purity and content of hydrogen and chlorine at the gas inlet of the hydrogen chloride synthesis furnace 1 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 hydrogen content of chlorine needs to be analyzed for the first time. After the above test items are qualified, the furnace is started. The hydrogen and chlorine are mixed at the quartz lamp head 2 in the hydrogen chloride synthesis furnace 1 to generate hydrogen chloride gas. The steam generated by the hydrogen chloride synthesis furnace 1 is discharged through the steam release pipe 7. The hydrogen chloride gas is transported to the hydrogen chloride cooler 9 through the hydrogen chloride output pipeline 8 for subsequent production. At this time, the two side fire detectors 13 start to work synchronously. The fire detector 13 is mainly used for real-time monitoring of the combustion condition in the furnace, and confirming whether the flame is stably burned. When the fire detector 13 sends a signal that the flame is extinguished during operation, the PLC controller 6 receives the signal and sends an audible and light alarm to remind the operator to check. Check whether the hydrogen chloride synthesis furnace 1 is extinguished. When the two fire detectors 13 send signals that the flame is extinguished during operation, the PLC controller 6 sends an audible and light alarm and automatically closes the hydrogen regulating valve 4, the chlorine regulating valve 3 and opens the nitrogen replacement valve 5. The system automatically fills the nitrogen replacement into the synthesis furnace 1 to prevent the hydrogen and chlorine mixed gas from reaching the explosion limit. In the case of extinguishing the synthesis furnace, the automatic extinguishing program can be automatically executed to form safety protection.
Claims
1. A hydrogen chloride graphite synthesis furnace automatic extinguishing protection device, comprising a hydrogen chloride synthesis furnace (1), a quartz lamp head (2) is arranged in the hydrogen chloride synthesis furnace (1), a chlorine gas pipeline (10) and a hydrogen gas pipeline (11) are arranged at the gas inlet of the hydrogen chloride synthesis furnace (1), a chlorine gas regulating valve (3) is arranged on the chlorine gas pipeline (10), and a hydrogen gas regulating valve (4) is arranged on the hydrogen gas pipeline (11), characterized in that: Also include PLC controller (6) and fire detector (13), fire detector (13) is installed on the quartz lamp head (2) cylinder, PLC controller (6) is connected with chlorine regulating valve (3), hydrogen regulating valve (4) and fire detector (13). 2. The automatic extinguishing protection device for hydrogen chloride graphite synthesis furnace according to claim 1, characterized in that: The fire detector (13) is provided with two, and the two fire detectors (13) are symmetrically installed on the quartz lamp head (2) cylinder.
3. The automatic extinguishing protection device for hydrogen chloride graphite synthesis furnace according to claim 1, characterized in that: The hydrogen chloride synthesis furnace (1) is further provided with a nitrogen pipeline (12) at the gas inlet, and the nitrogen pipeline (12) is provided with a nitrogen replacement valve (5).
4. The automatic extinguishing protection device for hydrogen chloride graphite synthesis furnace according to claim 3, characterized in that: The nitrogen replacement valve (5) is connected with the PLC controller (6).