Sudden synthetic furnace jacket hot water leakage detection and disposal system

Abstract

The utility model discloses a sudden synthetic furnace jacket hot water leakage detection and treatment system, and relates to the technical field of synthetic furnace leakage treatment. A sudden synthetic furnace jacket hot water leakage detection and disposal system comprises a synthetic furnace, a hot water jacket and a furnace bottom acid tank, the bottom of the synthetic furnace is sleeved with the hot water jacket, the side wall of the synthetic furnace above the hot water jacket is connected with a hydrogen chloride gas pipeline, and the bottom of the synthetic furnace is connected with the furnace bottom acid tank through an acid discharge pipeline; a first pressure gauge is arranged on the acid discharge pipeline, a second pressure gauge is arranged on the hydrogen chloride gas pipeline, and a differential pressure gauge is connected between the first pressure gauge and the second pressure gauge. And through the differential pressure gauge between the first pressure gauge and the second pressure gauge, rapid reaction and prompt of ultramicro leakage and emergency interlocking furnace extinguishing treatment of the synthetic furnace are realized, so that accidents caused by insufficient combustion are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of synthesis furnace leakage treatment, in particular to a sudden synthesis furnace jacket hot water leakage detection and treatment system. Background Art

[0002] At present, most of the synthesis of hydrogen and chlorine in the chlor-alkali industry is achieved by combustion reaction in the synthesis furnace, and a large amount of heat is released during the combustion reaction of hydrogen and chlorine. At present, the industry generally uses steam or hot water synthesis furnaces. This type of synthesis furnace exchanges heat between the pressure-bearing graphite inner cylinder and the steel outer cylinder to produce hot water, which is circulated with the help of an external circulation pump. In the case of long-term operation or aging of the synthesis furnace, once the hot water jacket of the synthesis furnace leaks (because the hot water pressure is higher than the hydrogen chloride pressure in the synthesis furnace), hot water will enter the synthesis furnace. If it is not discovered in time, hydrochloric acid will submerge the quartz lamp holder, causing fluctuations in the flow of hydrogen and chlorine entering the furnace. Chlorine and hydrogen cannot be fully burned, forming explosive gas, which is dangerous. Hydrogen chloride gas containing free chlorine enters the conversion system and reacts violently with acetylene to cause an explosion.

[0003] In order to solve the above problems, the invention patent of publication number CN103389192A discloses a leakage detection device and detection process for a hydrogen chloride graphite synthesis furnace, by connecting a condensed acid collection device at the bottom of the synthesis furnace, it is found that the leaked liquid enters the condensed acid collection device to cause the liquid level to rise rapidly, and an alarm is fed back by a remote liquid level gauge to realize online detection. The remote liquid level gauge is in the form of a flange, and the installation position of the lower flange cannot be close to the bottom surface of the acid tank. Therefore, the remote liquid level gauge is approximately located at a height of 5 to 10% from the bottom surface of the acid tank. When a trace leakage occurs in the synthesis method, the liquid flowing out cannot reach the lower end of the remote liquid level gauge (lower than 5% of the total height of the furnace bottom acid tank), then the remote liquid level gauge cannot monitor the leakage, and cannot timely alarm for ultra-trace leakage, and there is a great explosion safety hazard. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a sudden synthesis furnace jacket hot water leakage detection and disposal system.

[0005] To achieve this technical purpose, the utility model adopts the following scheme: a sudden synthesis furnace jacket hot water leakage detection and disposal system, including a synthesis furnace, a hot water jacket and a furnace bottom acid tank, the bottom of the synthesis furnace is covered with a hot water jacket, the side wall of the synthesis furnace above the hot water jacket is connected to a hydrogen chloride gas pipeline, and the bottom of the synthesis furnace is connected to the furnace bottom acid tank through an acid discharge pipeline; a first pressure gauge is installed on the acid discharge pipeline, a second pressure gauge is installed on the hydrogen chloride gas pipeline, and a differential pressure gauge is connected between the first pressure gauge and the second pressure gauge.

[0006] Compared with the prior art, the beneficial effects of the utility model are as follows: A differential pressure gauge is arranged between the first pressure gauge and the second pressure gauge. The differential pressure gauge has high sensitivity. Under normal conditions, the pointer of the differential pressure gauge is located at the zero scale position. When there is liquid flowing through the acid discharge pipeline, the pointer of the differential pressure gauge will deviate. At this time, the differential pressure gauge feeds back an alarm signal to the controller. According to the size of the deviation value, the controller issues an alarm signal and even directly shuts down the furnace operation, realizing the rapid response, prompt of ultra-trace leakage and the emergency interlock furnace shutdown disposal of the synthesis furnace, thereby avoiding accidents caused by insufficient combustion.

[0007] The preferred solution of the utility model is:

[0008] A liquid level gauge is arranged on the bottom acid tank of the furnace.

[0009] The bottom of the synthesis furnace is equipped with a burner head, and the burner head is respectively connected with a hydrogen gas pipeline and a chlorine gas pipeline.

[0010] The bottom of the hot water jacket is connected with a hot water supply pipeline, the top of the hot water is connected with a hot water return pipeline, and the hot water supply pipeline is also communicated with the hot water return pipeline.

[0011] The top of the synthesis furnace is connected with a circulating water supply pipeline and a circulating water return pipeline.

[0012] A flame detector is installed on the graphite sleeve of the synthesis furnace above the burner head.

[0013] A water flow sight glass is installed on the acid discharge pipeline for observing the liquid flow condition in the acid discharge pipeline. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a sudden hot water leakage detection and disposal system for a synthesis furnace jacket provided by an embodiment of the utility model;

[0015] The marks in the figure are: 1, synthesis furnace; 2, burner head; 3, hydrogen gas pipeline; 4, chlorine gas pipeline; 5, hydrogen chloride pipeline; 6, graphite sleeve; 7, hot water jacket; 8, hot water supply pipeline; 81, hot water return pipeline; 9, circulating water supply pipeline; 91, circulating water return pipeline; 10, bottom acid tank of the furnace; 11, acid discharge pipeline; 12, remote liquid level gauge; 13, second pressure gauge; 14, first pressure gauge; 15, differential pressure gauge; 16, water flow sight glass; 17, flame detector. Detailed Embodiments

[0016] To fully understand the purpose, features and effects of the utility model, the utility model will be described in detail through the following specific embodiments, but the utility model is not limited thereto.

[0017] As Figure 1As shown in the figure, a sudden synthesis furnace jacket hot water leakage detection and disposal system provided by the utility model includes a synthesis furnace 1, a graphite sleeve 6, a hot water jacket 7, a burner head 2, a hydrogen gas pipeline 3, a chlorine gas pipeline 4, a hydrogen chloride pipeline 5, a hot water supply pipeline 8, a hot water return pipeline 81, a circulating water supply pipeline 9, a circulating water return pipeline 91 and a furnace bottom acid tank 10. A graphite sleeve 6 is installed at the lower part of the synthesis furnace 1, and a hot water jacket 7 is fixed outside the graphite sleeve 6. The top of the hot water jacket 7 is connected to the hot water return pipeline 81, and the bottom of the hot water jacket 7 is connected to the hot water supply pipeline 8. The hot water supply pipeline 8 is also communicated with the hot water return pipeline 81. The upper part of the synthesis furnace 1 is respectively connected to the circulating water supply pipeline 9 and the circulating water return pipeline 91.

[0018] The bottom of the synthesis furnace 1 is connected to the furnace bottom acid tank 10 through an acid discharge pipeline 11. A manual valve is arranged on the acid discharge pipeline 11, and the manual valve is in an open state all the time, forming a disposal measure for the leakage process of the water phase in the furnace. A remote transmission liquid level gauge 12 is installed on the furnace bottom acid tank 10 for monitoring the liquid level change in the acid tank. At the same time, a water flow sight glass 16 is installed on the acid discharge pipeline 11. The water flow sight glass 16 has a real scene monitoring function for monitoring the liquid condition in the furnace bottom acid tank 10. When there is liquid flowing into the acid discharge pipeline 11 in the synthesis furnace 1, the water flow sight glass 16 monitors the liquid flowing through, and the feedback signal sends out an alarm signal through the controller.

[0019] Both the hydrogen gas pipeline 3 and the chlorine gas pipeline 4 are connected to the burner head 2. The burner head 2 is installed at the bottom of the synthesis furnace 1, and a flame detector 17 is installed on the graphite sleeve 6 above the burner head 2 for detecting the ignition condition in the synthesis furnace. The hydrogen chloride pipeline 5 is connected to the upper part of the synthesis furnace 1. A second pressure gauge 13 is installed on the hydrogen chloride pipeline 5, and a first pressure gauge 14 is also installed on the acid discharge pipeline 11. A differential pressure gauge 15 is connected between the first pressure gauge 14 and the second pressure gauge 13. The differential pressure gauge 15 is in communication connection with the controller, and quickly judges the medium passing condition in the acid discharge pipeline 11 when there is hot water leakage by comparing the pressure difference between the upper gas phase in the synthesis furnace 1 and the bottom of the synthesis furnace 1. The leakage of ultra-trace amount can have an obvious numerical change of the differential pressure gauge 15, indirectly reflecting the leakage problem of the synthesis furnace 1. Under normal conditions, the pointer of the differential pressure gauge 15 is at the zero scale position.

[0020] Process flow:

[0021] Hydrogen and chlorine respectively enter the synthesis furnace 1 through the furnace inlet hydrogen gas pipeline 3 and the furnace inlet chlorine gas pipeline 4, burn and synthesize in the burner head 2 to generate hydrogen chloride gas, and are transported to the downstream process through the furnace outlet hydrogen chloride pipeline 5. A large amount of heat is released during the hydrogen chloride synthesis reaction process. The furnace body part removes heat through the hot water supply pipeline 8 and the hot water return pipeline 81 in a cycle between the hot water jacket 7 and the graphite sleeve 6 of the synthesis furnace, and exchanges heat at the cooler of the synthesis furnace through the circulating water supply pipeline 9 and the circulating water return pipeline 91.

[0022] Under normal conditions, the pointer of the differential pressure gauge 15 is at the zero scale position. When there is a liquid leakage in the synthesis furnace 1, the liquid flows into the bottom acid tank 10 through the acid discharge pipe 11. Once there is liquid flowing through the acid discharge pipe 11 and the differential pressure gauge 15 shows a numerical fluctuation, it will feedback an alarm message to the controller. Depending on the situation, the controller issues an alarm signal or directly interlocks to shut down the furnace operation to achieve a rapid response to micro-flow leakage. To increase the sensitivity, the water flow sight glass 16 on the acid discharge pipe 11 also has a monitoring and alarm function. When liquid flow is detected in the water flow sight glass 16, it will feedback an alarm message to the controller, and the controller issues subsequent operation instructions according to the flow rate.

[0023] Finally, it should be noted that the above-listed are only the preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and its equivalent technologies, they should all be considered within the protection scope of the present invention.

Claims

1. A sudden synthetic furnace jacket hot water leakage detection and disposal system, comprising a synthetic furnace, a hot water jacket and a bottom furnace acid tank. The bottom of the synthetic furnace is sleeved with the hot water jacket. A hydrogen chloride gas pipeline is connected to the side wall of the synthetic furnace above the hot water jacket. The bottom of the synthetic furnace is connected to the bottom furnace acid tank through an acid discharge pipeline; it is characterized in that, A first pressure gauge is installed on the acid discharge pipeline, a second pressure gauge is installed on the hydrogen chloride gas pipeline, and a differential pressure gauge is connected between the first pressure gauge and the second pressure gauge.

2. The sudden synthesis furnace jacket hot water leakage detection and disposal system according to claim 1, characterized in that, A liquid level gauge is set for the acid tank at the furnace bottom.

3. The sudden synthesis furnace jacket hot water leakage detection and disposal system according to claim 1, characterized in that, A burner is installed at the bottom of the synthesis furnace, and the burner is respectively connected with a hydrogen gas pipeline and a chlorine gas pipeline.

4. The sudden synthesis furnace jacket hot water leakage detection and disposal system according to claim 1, characterized in that, The bottom of the hot water jacket is connected with a hot water supply pipeline, the top of the hot water is connected with a hot water return pipeline, and the hot water supply pipeline is also communicated with the hot water return pipeline.

5. The sudden synthesis furnace jacket hot water leakage detection and disposal system according to claim 1, characterized in that, The top of the synthesis furnace is connected with a circulating water supply pipeline and a circulating water return pipeline.

6. The sudden synthesis furnace jacket hot water leakage detection and disposal system according to claim 1, characterized in that A flame detector is installed on the graphite sleeve of the synthesis furnace above the burner.

7. The sudden synthesis furnace jacket hot water leakage detection and disposal system according to claim 1, characterized in that, A water flow sight glass is installed on the acid discharge pipeline for observing the liquid flow in the acid discharge pipeline.

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