Observation sight glass suitable for hydrogen chloride synthesis furnace

Abstract

The utility model relates to the technical field of hydrogen chloride synthetic furnaces, in particular to an observation sight glass suitable for a hydrogen chloride synthetic furnace, which comprises a base arranged on a furnace body and internally provided with a base cavity corresponding to the inside of the furnace body; the first glass substrate is arranged at one end of the base; the connecting flange is located on one side of the first glass base material, a connecting flange cavity is formed in the connecting flange, and the connecting flange cavity corresponds to the base cavity; the second glass substrate is arranged on one side of the connecting flange; the pressing flange is located on one side of the second glass base material, a pressing flange cavity is formed in the pressing flange, and the pressing flange cavity corresponds to the connecting flange cavity and the base cavity; according to the utility model, through the first glass substrate and the second glass substrate which are arranged in parallel, the risk of leakage of HCl gas in the furnace or invasion of external air can be effectively avoided, and the thickness value of the first glass substrate is greater than that of the second glass substrate, so that the risk of leakage of HCl gas or invasion of external air is further avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen chloride synthetic furnace technical field especially suitable for hydrogen chloride synthetic furnace's observation sight glass. BACKGROUND

[0002] Hydrogen chloride synthetic furnace is the key equipment of manufacturing hydrogen chloride in industrial production, and its working principle is mainly based on hydrogen and chlorine in the furnace mixing combustion under the action of the lamp holder at the bottom of the furnace, thereby producing hydrogen chloride.

[0003] In the combustion process, the state of the flame needs to be observed at all times. For example, is the color of the flame normal? Normal flame is pale yellow, and if it turns yellow, it indicates that the chlorine is excessive, and the excessive chlorine may cause the chlorine and acetylene to mix to generate highly explosive chloroacetylene in the subsequent process, thereby causing an explosion accident. For another example, is the flame in a normal combustion state? If the flame is accidentally extinguished, the unburned hydrogen and chlorine mixed in the furnace form an explosive gas, which also causes a dangerous event to occur.

[0004] Therefore, in order to facilitate the observation of the flame by the operator, an observation sight glass is installed on the furnace body (hydrogen chloride synthetic furnace). The existing observation sight glass mainly consists of a connecting seat and a single layer of glass, wherein the connecting seat is arranged on the furnace body, and the single layer of glass is arranged on the connecting seat. Its structure is simple, but in the running process, the single layer of glass is prone to cracking or breaking, thereby causing hydrogen chloride leakage or external air entering the furnace and mixing with hydrogen to form an explosive gas. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide an observation sight glass suitable for a hydrogen chloride synthetic furnace to solve the problems raised in the background art.

[0006] The technical scheme adopted by the utility model is:

[0007] The observation sight glass suitable for the hydrogen chloride synthetic furnace comprises:

[0008] A base is arranged on the furnace body and has a through base cavity inside, which corresponds to the inside of the furnace body;

[0009] A first glass substrate is arranged at one end of the base and coaxial with the base;

[0010] A connecting flange is located at one side of the first glass substrate and coaxial with the first glass substrate and the base, and has a through connecting flange cavity inside, which corresponds to the base cavity;

[0011] a second glass base arranged on one side of the connecting flange coaxially with the connecting flange, the first glass base and the base, and having a thickness value less than that of the first glass base;

[0012] a pressing flange arranged on one side of the second glass base coaxially with the second glass base, the connecting flange, the first glass base and the base, and having a through pressing flange cavity in the interior thereof corresponding to the connecting flange cavity and the base cavity.

[0013] Preferably, the thickness of the first glass base is 10-12 mm.

[0014] Preferably, the outer surface of the first glass base is coated with a ceramic coating.

[0015] Preferably, the thickness of the ceramic coating is 1-3 μm, and the coating is made by a sol-gel method.

[0016] Preferably, the thickness of the second glass base is 8-10 mm.

[0017] Preferably, the cleaning member is coaxial with the base and the first glass base and arranged between the base and the first glass base.

[0018] Preferably, expansion fluorine pads are arranged at the connecting positions of the base and the cleaning member, the cleaning member and the first glass base, the first glass base and the connecting flange, the connecting flange and the second glass base, and the second glass base and the pressing flange.

[0019] Preferably, the cleaning member has a through cleaning cavity in the interior thereof corresponding to the base cavity, and the cleaning member is provided with a water inlet through hole and a water outlet through hole communicating with the cleaning cavity.

[0020] Preferably, the water inlet through hole is in a ladder shape, and the water outlet end thereof is adjacent to the first glass base.

[0021] Preferably, the distance between the water inlet end of the water outlet through hole and the first glass base is greater than that between the water outlet end of the water inlet through hole and the first glass base.

[0022] Compared with the prior art, the utility model has the advantages of:

[0023] In the utility model, through first glass base material and second glass base material who sets up in parallel, can effectively avoid the risk of HCl gas in the furnace out of or external air invasion, furthermore, the thickness value of first glass base material is greater than the thickness value of second glass base material, improved the anti-impact and compression resistance of observation sight glass, can bear higher pressure fluctuation, further avoid the risk of HCl gas out of or external air invasion, greatly improve the safety and reliable performance of the observation sight glass in the use process. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating labor.

[0025] Figure 1 It is a cross-sectional structure schematic view of the present application;

[0026] Figure 2 It is Figure 1 Structure schematic view at A in the figure.

[0027] Reference signs:

[0028] 1, base;11, base cavity;

[0029] 2, first glass base material;

[0030] 3, connecting flange;31, connecting flange cavity;

[0031] 4, second glass base material;

[0032] 5, compression flange;51, compression flange cavity;

[0033] 6, cleaning piece;61, cleaning cavity;62, water inlet through hole;621, water outlet end;63, water outlet through hole;631, water inlet end;

[0034] 7, four fluorine gasket;8, stud. DETAILED DESCRIPTION

[0035] In the following, only some exemplary embodiments are simply described.As those skilled in the art can realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application.As such, the drawings and description are considered to be exemplary in nature and not limiting.

[0036] In view of the prior art, single-layer glass is prone to cracking or breaking, which leads to hydrogen chloride leakage or external air entering the furnace to mix with hydrogen to form explosive gas.

[0037] As Figures 1-2 shown, the utility model embodiment provides the observation sight mirror suitable for hydrogen chloride synthesis furnace, include: base 1, first glass base material 2, connecting flange 3, second glass base material 4 and compact flange 5 and so on several parts.

[0038] Wherein, base 1 is arranged on the furnace body, and its inside has the cavity that passes through, and the cavity is called base cavity 11, and base cavity 11 corresponds with the inside of furnace body, that is, the flame condition in the inside of furnace body can be observed through base cavity 11.

[0039] First glass base material 2 is arranged at the end of the end of base 1 away from the furnace body, and is coaxial with base 1, and its size is adapted to base 1, and is made of quartz glass or sapphire glass. Preferably, first glass base material 2 in the embodiment is made of quartz glass, and its thickness is about 10-12mm. First glass base material 2 is configured to directly bear the corrosion and thermal shock of high-temperature HCl gas in the furnace.

[0040] Connecting flange 3 is located at the side of first glass base material 2 away from base 1, and is coaxial with first glass base material 2 and base 1, and has a through connecting flange cavity 31 in its inside, and connecting flange cavity 31 corresponds with base cavity 11. Connecting flange 3 is connected with base 1 by double-end bolt 8. Connecting flange 3 is configured to realize fixed connection between first glass base material 2 and base 1 through mechanical structure.

[0041] Second glass base material 4 is arranged at the side of connecting flange 3 away from first glass base material 2, and is coaxial with connecting flange 3, first glass base material 2 and base 1, and second glass base material 4 is made of quartz glass or sapphire glass. Preferably, second glass base material 4 in the embodiment is made of quartz glass, and its thickness is about 8-10mm. Second glass base material 4 is configured to enhance the overall mechanical strength, reduce the risk of deformation and improve safety performance, when first glass base material 2 breaks, second glass base material 4 remains intact, second glass base material 4 prevents the splashing of fragments while avoiding the leakage of HCl gas or the invasion of external air.

[0042] The pressing flange 5 is coaxial with the second glass substrate 4, the connecting flange 3, the first glass substrate 2 and the base 1, and is located on the side of the second glass substrate 4 away from the connecting flange 3. The pressing flange 5 has a through pressing flange cavity 51 inside, which corresponds to the connecting flange cavity 31 and the base cavity 11, so as to facilitate observation of the flame in the furnace. The pressing flange 5 is also connected to the connecting flange 3 by the stud bolt 8, that is, a part of the connecting holes on the connecting flange 3 is used to connect the base 1, and the other part is used to connect the pressing flange 5. The pressing flange 5 is configured to achieve fixed connection between the second glass substrate 4 and the connecting flange 3 through a mechanical structure.

[0043] Further, in order to improve the corrosion resistance of the first glass substrate 2 and prolong the service life of the first glass substrate 2, in the embodiment, the outer surface of the first glass substrate 2 is coated with a ceramic coating (not shown in the figure), which is coated by sol-gel method, that is, nano-alumina sol is spin-coated on the surface of the first glass substrate 2, and a dense ceramic film is formed by high-temperature sintering at 500°C. More specifically, the thickness of the ceramic coating is about 1-3 μm. The ceramic coating resists chemical corrosion of the first glass substrate 2 by high-temperature HCl gas and condensate.

[0044] Further, in order to maintain the long-term light transmittance of the first glass substrate 2, the observation sight glass further comprises a cleaning member 6, which is coaxial with the base 1 and the first glass substrate 2 and is located between the first glass substrate 2 and the base 1.

[0045] Specifically, the cleaning member 6 has a through cavity inside, which is called a cleaning cavity 61, and the cleaning cavity 61 corresponds to the base cavity 11. The cleaning member 6 has a water inlet through hole 62 and a water outlet through hole 63 at the radially opposite ends, which communicate with the cleaning cavity 61.

[0046] The water inlet through hole 62 is ladder-shaped, which helps to form a gentle flow field, so that the water flow passes more smoothly, thereby reducing the impact and turbulence of the water flow. The water outlet end 621 of the water inlet through hole 62 is adjacent to the first glass substrate 2, thereby improving the coverage of the cleaning liquid on the first glass substrate 2. The cleaning liquid flowing out of the water outlet end 621 is distributed on the surface of the first glass substrate 2 under the action of inertia, and then flows down along the surface of the first glass substrate 2 under the action of gravity, thereby carrying away the deposits on the surface of the first glass substrate 2 due to the chemical reaction in the furnace.

[0047] The water outlet through hole 63 is located below the water inlet through hole 62, and the distance between the water inlet end 631 of the water outlet through hole 63 and the first glass substrate 2 is much greater than the distance between the water outlet end 621 of the water inlet through hole 62 and the first glass substrate 2, thereby facilitating complete collection of the cleaning liquid and preventing the cleaning liquid from flowing into the furnace through the base cavity 11.

[0048] The cleaning liquid flows to the surface of the first glass substrate 2 through the water inlet through hole 62, and under the action of gravity, the cleaning liquid flows down along the surface of the first glass substrate 2, and carries away the deposits on the surface of the first glass substrate 2, and then extends along the bottom wall of the cleaning cavity 61 until the water outlet through hole 63, and then the cleaning liquid is discharged through the water outlet through hole 63.

[0049] Further, in order to improve the sealing of the observation mirror, in the embodiment, expansion Teflon gaskets 7 are arranged at the connecting positions of the base 1 and the cleaning piece 6, the cleaning piece 6 and the first glass substrate 2, the first glass substrate 2 and the connecting flange 3, the connecting flange 3 and the second glass substrate 4, and the second glass substrate 4 and the pressing flange 5, and the expansion Teflon gasket 7 is a high-performance sealing material with multiple excellent properties.

[0050] In use, first, the base 1, the cleaning piece 6, the first glass substrate 2, the connecting flange 3, the second glass substrate 4 and the pressing flange 5 are arranged in sequence in the direction away from the furnace body, and then the base 1 and the connecting flange 3, and the connecting flange 3 and the pressing flange 5 are connected through the double-end bolt 8 to form the observation mirror in the embodiment.

[0051] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A sight glass suitable for use in a hydrogen chloride synthesis furnace, characterized in that The application relates to a glass base, which comprises a base arranged on a furnace body, an internal through base cavity corresponding to the inside of the furnace body, a first glass base arranged at one end of the base coaxially with the base, a connecting flange arranged at one side of the first glass base coaxially with the first glass base and the base, an internal through connecting flange cavity corresponding to the base cavity, a second glass base arranged at one side of the connecting flange coaxially with the connecting flange, the first glass base and the base, the thickness of the second glass base being smaller than that of the first glass base, and a pressing flange arranged at one side of the second glass base coaxially with the second glass base, the connecting flange, the first glass base and the base, an internal through pressing flange cavity corresponding to the connecting flange cavity and the base cavity. The thickness of the first glass base is 10-12 mm.

2. The viewing mirror of claim 1, wherein, The outer surface of the first glass base is coated with a ceramic coating.

3. An observation mirror according to claim 1 or 2, characterised in that The thickness of the ceramic coating is 1-3 microns, and the coating is prepared by a sol-gel method.

4. The viewing mirror of claim 3, wherein, The thickness of the second glass base is 8-10 mm.

5. The viewing mirror of claim 1, wherein, The application further comprises a cleaning part coaxial with the base and the first glass base and arranged between the base and the first glass base.

6. The viewing mirror of claim 1, wherein, Expansion fluorine pads are arranged at the connecting positions of the base and the cleaning part, the cleaning part and the first glass base, the first glass base and the connecting flange, the connecting flange and the second glass base, and the second glass base and the pressing flange.

7. The viewing mirror of claim 6, wherein, The cleaning part has an internal through cleaning cavity corresponding to the base cavity, and water inlet and outlet through holes are arranged on the cleaning part and communicated with the cleaning cavity.

8. The viewing mirror of claim 6, wherein, The water inlet through hole is in a ladder shape, and the water outlet end is adjacent to the first glass base.

9. The viewing mirror of claim 8, wherein, The distance between the water inlet end of the water outlet through hole and the first glass base is much larger than that between the water outlet end of the water inlet through hole and the first glass base.

10. The viewing mirror of claim 9, wherein, ​

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