Detection duration prolonging device for flame detector in HCL synthesis furnace

Abstract

The utility model provides a detection duration prolonging device for a flame detector in an HCL synthetic furnace, which relates to the technical field of synthetic furnace detection equipment and comprises a main delivery pipe, a first nitrogen delivery pipe and a second nitrogen delivery pipe, a switching valve is arranged on the main delivery pipe, a nitrogen supply system is arranged at one end of the main delivery pipe, and a nitrogen outlet is arranged at the other end of the main delivery pipe. A first pressure regulating valve and a first pressure gauge are sequentially arranged on the first nitrogen conveying pipe, one end of the first nitrogen conveying pipe is connected with the main conveying pipe, a second pressure regulating valve and a second pressure gauge are sequentially arranged on the second nitrogen conveying pipe, and one end of the second nitrogen conveying pipe is connected with the main conveying pipe. Two first ball valves are arranged on the first nitrogen conveying pipe, and the first pressure regulating valve and the first pressure gauge are located between the two first ball valves; the second nitrogen conveying pipe is provided with two second ball valves, and the second pressure adjusting valve and the second pressure gauge are located between the two second ball valves. According to the utility model, chloride cannot be attached to the observation sight glass of the HC l synthesis furnace, so that the flame detector is always in a normal working state.

Description

Technical Field

[0001] The utility model relates to the technical field of synthesis furnace detection equipment, in particular to a detection time extension device for a flame detector in an HCL synthesis furnace. Background Art

[0002] With the maturity of hydrogen chloride production process, the hydrogen chloride synthesis furnace burns the hydrogen and chlorine produced in the 300,000 tons of potash production process to produce HCl gas, which is used to produce VCM monomer and hydrochloric acid. The main raw materials of acetylene-based PVC are HCl gas and acetylene gas. The two react in the VCM workshop to generate VCM monomer, which is transported to the polymerization process to generate polyvinyl chloride resin, with hydrogen chloride as the main raw material.

[0003] At present, the outer sight glass of the flame detector is made of a single layer of 10cm thick high-temperature resistant glass. When the HCl synthesis furnace is running for about ten days, the chloride produced by the combustion of the lamp holder in the furnace adheres to the sight glass, and the flame observation sight glass becomes blurred. The flame detector cannot detect the combustion of the flame in the furnace through the sight glass. Due to the production process, once HCl is overchlorinated during the production of acetylene-based PVC, it will react violently with acetylene and explode. The overchlorination of hydrogen chloride is closely related to the combustion of hydrogen and chlorine in the furnace. When the HCl synthesis furnace observation sight glass is blurred, the flame detector cannot detect the combustion of the flame through the sight glass, and the interlock synthesis furnace is shut down, which poses a great hidden danger to production safety. The furnace must be turned over to clean the sight glass.

[0004] Therefore, there is an urgent need for a detection time extension device for the flame detector in the HCL synthesis furnace to solve the problem that the chloride produced by the HCl synthesis furnace adheres to the observation mirror, causing the flame detector to be unable to detect the burning condition of the flame through the mirror, and then the synthesis furnace is interlocked and shut down, which poses a great hidden danger to production safety. Utility Model Content

[0005] The utility model provides a detection time extension device for a flame detector in an HCL synthesis furnace, which solves the problem that chlorides generated in the HCl synthesis furnace adhere to an observation mirror, causing the flame detector to be unable to detect the combustion of the flame through the mirror, and then the synthesis furnace is interlocked and stopped, which causes great hidden dangers to production safety.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A detection time extension device for a flame detector in an HCL synthesis furnace, comprising:

[0008] A main delivery pipe, wherein a switch valve is provided on the main delivery pipe, and a nitrogen supply system is provided at one end of the main delivery pipe;

[0009] a first nitrogen delivery pipe, on which a first pressure regulating valve and a first pressure gauge are sequentially arranged, and one end of the first nitrogen delivery pipe is connected to the main delivery pipe;

[0010] A second nitrogen delivery pipe, on which a second pressure regulating valve and a second pressure gauge are sequentially arranged, and one end of the second nitrogen delivery pipe is connected to the main delivery pipe.

[0011] Furthermore, two first ball valves are provided on the first nitrogen delivery pipe, and the first pressure regulating valve and the first pressure gauge are located between the two first ball valves;

[0012] The second nitrogen delivery pipe is provided with two second ball valves, and the second pressure regulating valve and the second pressure gauge are located between the two second ball valves.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] In actual use, the output ends of the first nitrogen delivery pipe and the second nitrogen delivery pipe are installed at the observation mirror of the HCL synthesis furnace, and then the switch valve is opened, and nitrogen enters the first nitrogen delivery pipe and the second nitrogen delivery pipe in sequence, and then comes out to spray nitrogen on the observation mirror, thereby preventing chloride from adhering to the observation mirror, and then the flame detector can detect the internal situation of the HCL synthesis furnace through the observation mirror in real time. The use of the utility model can ensure that chloride will not adhere to the observation mirror of the HCl synthesis furnace, so that the flame detector is always in a normal working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Markings and parts names in the figure:

[0017] 1-main delivery pipe, 2-first nitrogen delivery pipe, 3-second nitrogen delivery pipe, 4-first pressure regulating valve, 5-first pressure gauge, 6-first ball valve, 7-second pressure regulating valve, 8-second pressure gauge, 9-second ball valve, 10-switch valve. DETAILED DESCRIPTION

[0018] The utility model is described in detail below in conjunction with the accompanying drawings.

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] This embodiment provides a detection time extension device for a flame detector in an HCL synthesis furnace, such as Figure 1 As shown, including:

[0021] A main delivery pipe 1, on which a switch valve 10 is provided, and one end of the main delivery pipe 1 is provided with a nitrogen supply system;

[0022] A first nitrogen delivery pipe 2, wherein a first pressure regulating valve 4 and a first pressure gauge 5 are sequentially arranged on the first nitrogen delivery pipe 2, and one end of the first nitrogen delivery pipe 2 is connected to the main delivery pipe 1; wherein the air pressure in the first nitrogen delivery pipe 2 can be observed in real time through the first pressure gauge 5.

[0023] The second nitrogen delivery pipe 3 is provided with a second pressure regulating valve 7 and a second pressure gauge 8 in sequence, and one end of the second nitrogen delivery pipe 3 is connected to the main delivery pipe 1. The air pressure in the second nitrogen delivery pipe 3 can be observed in real time through the second pressure gauge 8.

[0024] In actual use, the output ends of the first nitrogen delivery pipe 2 and the second nitrogen delivery pipe 3 are installed at the observation mirror of the HCL synthesis furnace, and then the switch valve 10 is opened, and the nitrogen enters the first nitrogen delivery pipe 2 and the second nitrogen delivery pipe 3 in sequence, and then comes out to spray the nitrogen on the observation mirror, thereby preventing chloride from adhering to the observation mirror, and then the flame detector can detect the internal situation of the HCL synthesis furnace through the observation mirror in real time. The use of the utility model can ensure that chloride will not adhere to the observation mirror of the HCl synthesis furnace, so that the flame detector is always in a normal working state.

[0025] The above embodiment is further optimized, two first ball valves 6 are provided on the first nitrogen delivery pipe 2, and the first pressure regulating valve 4 and the first pressure gauge 5 are located between the two first ball valves 6;

[0026] Two second ball valves 9 are arranged on the second nitrogen delivery pipe 3 , and the second pressure regulating valve 7 and the second pressure gauge 8 are located between the two second ball valves 9 .

[0027] The arrangement of the first ball valve 6 and the second ball valve 9 facilitates maintenance of the first pressure regulating valve or the second pressure regulating valve.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detection time extension device for a flame detector in an HCL synthesis furnace, characterized in that: include: A main delivery pipe (1), wherein a switch valve (10) is provided on the main delivery pipe (1), and a nitrogen supply system is provided at one end of the main delivery pipe (1); a first nitrogen delivery pipe (2), wherein a first pressure regulating valve (4) and a first pressure gauge (5) are sequentially arranged on the first nitrogen delivery pipe (2), and one end of the first nitrogen delivery pipe (2) is connected to the main delivery pipe (1); A second nitrogen delivery pipe (3), on which a second pressure regulating valve (7) and a second pressure gauge (8) are sequentially arranged, and one end of the second nitrogen delivery pipe (3) is connected to the main delivery pipe (1).

2. The detection time extension device for a flame detector in an HCL synthesis furnace according to claim 1, characterized in that: Two first ball valves (6) are arranged on the first nitrogen delivery pipe (2), and the first pressure regulating valve (4) and the first pressure gauge (5) are located between the two first ball valves (6); Two second ball valves (9) are arranged on the second nitrogen delivery pipe (3), and the second pressure regulating valve (7) and the second pressure gauge (8) are located between the two second ball valves (9).

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