High-purity quartz sand chlorination purification tail gas collecting device

Abstract

The utility model relates to the technical field of quartz sand chlorination purification production, in particular to a tail gas collecting device for chlorination purification of high-purity quartz sand, which is characterized in that tail gas generated by purification equipment passes through a glass tube through a gas collecting hood, then is discharged from the top of the glass tube and enters a tail gas discharge tube; a signal is fed back to the inert gas source device, the inert gas source device starts to release inert gas, the low-temperature inert gas enters the gas sealing cover from a gas inlet in the side face of the gas sealing cover, and the low-temperature inert gas in the gas sealing cover is sucked into the glass tube through gas holes in the glass tube by negative pressure in the glass tube. The low-temperature inert gas and the high-temperature tail gas are sucked into the tail gas discharge pipe together and finally discharged into the waste gas washing tower for treatment through the fan, and the high-temperature tail gas and the low-temperature inert gas are mixed, so that the temperature of the tail gas can be effectively reduced, the influence of the temperature on the discharge pipeline is relieved, the service life of the discharge pipeline is prolonged, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of quartz sand chlorination purification production, in particular to a high-purity quartz sand chlorination purification tail gas collection device. Background Art

[0002] Chlorination purification is a common method in the deep purification process of high-purity quartz sand. Chlorine or hydrogen chloride gas is introduced into the purification equipment to produce a chlorination reaction with the quartz sand in a high-temperature environment to achieve the purpose of reducing the content of impurity elements in the quartz sand. High-temperature acidic tail gas will be produced during the chlorination reaction. At present, the tail gas produced by the chlorination purification of high-purity quartz sand is generally directly sucked into the exhaust gas washing tower through the tail gas emission pipe with a fan.

[0003] However, high-temperature exhaust gas is directly discharged into the exhaust gas emission pipe, which affects the life of the emission pipe, increases maintenance costs and safety hazards.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The utility model provides a high-purity quartz sand chlorination purification tail gas collection device, thereby effectively solving the problems in the background technology.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a high-purity quartz sand chlorination purification tail gas collection device, comprising:

[0007] A gas collecting hood, a glass tube, an exhaust gas discharge pipe, a fan, and a gas sealing hood and an inert gas source device arranged on the outer layer of the glass tube are sequentially arranged in series;

[0008] An inert gas inlet is provided on the side of the gas sealing cover, and the inert gas inlet is connected to the gas outlet of the inert gas source device;

[0009] The side wall of the glass tube is provided with a plurality of through holes, and the through holes enable the gas sealing cover to communicate with the glass tube;

[0010] A detection point is arranged in the exhaust gas discharge pipe, and the detection result of the detection point is connected to the inert gas source device.

[0011] Furthermore, the detection result of the detection point is connected to the fan.

[0012] Furthermore, the detection point is provided with at least one of a concentration sensor and a temperature sensor.

[0013] Furthermore, a trumpet structure is provided on one side of the gas collecting hood facing the tail gas discharge port of the purification equipment.

[0014] Furthermore, it also includes a support, the glass tube and the bottom of the gas sealing cover are concentrically arranged on the support, and a through hole is provided in the center of the support, and the exhaust gas enters the glass tube through the through hole.

[0015] Furthermore, the gas sealing cover and the support are sealed.

[0016] Furthermore, a pressure detection device is provided on the gas sealing cover.

[0017] Furthermore, the number of the inert gas inlets is at least two, and the inert gas inlets are symmetrically arranged on the sides of the glass tube.

[0018] Furthermore, the through holes are evenly arranged on the side wall of the glass tube.

[0019] Furthermore, the through hole is provided with a taper, and the large end of the through hole faces the gas sealing cover.

[0020] The beneficial effects of the utility model are as follows: the utility model provides a gas collecting hood, a glass tube, an exhaust gas exhaust pipe, a fan, a gas sealing hood and an inert gas source device, the exhaust gas generated by the purification equipment enters the glass tube through the gas collecting hood, the exhaust gas enters from the bottom of the glass tube, passes through the glass tube, is discharged from the top of the glass tube, and enters the exhaust gas exhaust pipe, when the detection point in the exhaust gas exhaust pipe detects the exhaust gas, the signal is fed back to the inert gas source device, the inert gas source device starts to release the inert gas, and the low-temperature inert gas enters the gas sealing hood from the air inlet on the side of the gas sealing hood, the negative pressure in the glass tube sucks the low-temperature inert gas in the gas sealing hood into the glass tube through the air holes on the glass tube, and is sucked into the exhaust gas exhaust pipe together with the high-temperature exhaust gas, and finally is discharged to the exhaust gas washing tower for treatment through the fan, and by mixing the high-temperature exhaust gas with the low-temperature inert gas, the temperature of the exhaust gas can be effectively reduced, the influence of the temperature on the exhaust pipe can be mitigated, the service life of the exhaust pipe can be extended, and the cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of a high-purity quartz sand chlorination purification tail gas collection device;

[0023] Figure 2 It is a schematic diagram of the structure of the glass tube and the gas sealing cover;

[0024] Figure 3 Schematic diagram of the structure of the through hole on the glass tube.

[0025] Reference numerals: 1, gas collecting cover; 2, glass tube; 21, through hole; 3, exhaust pipe; 4, fan; 5, gas sealing cover; 51, support; 52, inert gas inlet; 6, inert gas source device; 7, detection point;

[0026] 01. Purification equipment. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figures 1 to 3 As shown, a high-purity quartz sand chlorination purification tail gas collection device comprises:

[0031] A gas collecting hood 1, a glass tube 2, an exhaust gas exhaust pipe 3, a fan 4, and a gas sealing hood 5 and an inert gas source device 6 arranged on the outer layer of the glass tube 2 are sequentially arranged in series;

[0032] An inert gas inlet 52 is provided on the side of the gas sealing cover 5, and the inert gas inlet 52 is connected to the gas outlet of the inert gas source device 6;

[0033] The side wall of the glass tube 2 is provided with a plurality of through holes 21, and the through holes 21 allow the gas sealing cover 5 and the glass tube 2 to communicate with each other;

[0034] A detection point 7 is provided in the exhaust gas discharge pipe 3 , and the detection result of the detection point 7 is connected to the inert gas source device 6 .

[0035] By setting up a gas collecting hood 1, a glass tube 2, an exhaust gas discharge pipe 3, a fan 4, a gas sealing hood 5 and an inert gas source device 6, the exhaust gas generated by the purification equipment 01 enters the glass tube 2 through the gas collecting hood 1, and the exhaust gas enters from the bottom of the glass tube 2, passes through the glass tube 2, and is discharged from the top of the glass tube 2 to enter the exhaust gas discharge pipe 3. When the detection point in the exhaust gas discharge pipe 3 detects the exhaust gas, the signal is fed back to the inert gas source device 6, and the inert gas source device 6 starts to release the inert gas, and the low-temperature inert gas enters the gas sealing hood 5 from the inert gas inlet 52 on the side of the gas sealing hood 5. The negative pressure in the glass tube 2 draws the low-temperature inert gas in the gas sealing hood 5 into the glass tube 2 through the air holes on the glass tube 2, and is sucked into the exhaust gas discharge pipe 3 together with the high-temperature exhaust gas, and finally discharged to the exhaust gas washing tower for treatment through the fan 4. By mixing the high-temperature exhaust gas with the low-temperature inert gas, the temperature of the exhaust gas can be effectively reduced, the influence of the temperature on the discharge pipeline can be alleviated, the service life of the discharge pipeline can be extended, and the cost can be reduced.

[0036] The detection point 7 is set to automatically feedback and control the switch of the inert gas source device 6, so as to automatically adjust the release of the inert gas according to the actual exhaust gas situation and improve the automation level of the device.

[0037] The use of inert gas can not only improve safety, but also reduce the energy consumption of the system to a certain extent. By mixing low-temperature inert gas into the exhaust gas, the temperature of the exhaust gas discharged into the exhaust gas washing tower can be reduced, the processing energy consumption in the exhaust gas washing tower can be reduced, and the cost of exhaust gas treatment can be reduced.

[0038] The glass tube 2 is made of high-purity quartz sand. Compared with commonly used metal pipes or plastic pipes, it has the advantages of high temperature resistance and corrosion resistance, which can extend the service life of the pipe and ensure production safety.

[0039] The inert gas in the inert gas source device 6 may be nitrogen, argon or the like.

[0040] As a preferred embodiment of the above, the detection result of the detection point 7 is connected to the fan 4. Specifically, once exhaust gas is detected, the system can automatically start the fan 4, and the automatic control can improve the efficiency of the system, ensuring that the fan 4 can be started in time when the exhaust gas needs to be discharged; since the start of the fan 4 is related to the actual existence of the exhaust gas, the device will not waste energy in the absence of exhaust gas, which helps to save energy and reduce the cost of system operation.

[0041] In this embodiment, the detection point 7 is provided with a concentration sensor and a temperature sensor, or at least one of them. The concentration sensor monitors the concentration of a specific compound in the exhaust gas and / or the temperature sensor monitors the temperature of the exhaust gas, and the release amount of the inert gas is automatically adjusted according to the change of the concentration value or the temperature value to maintain the appropriate temperature of the exhaust gas. The concentration sensor and the temperature sensor can be used alone or in combination.

[0042] After the detection point 7 detects the exhaust gas, the detection result is transmitted to the control system by means of signal transmission. The control system controls the switch of the inert gas source device 6 and the fan 4. Through the coordinated work of the detection point 7 and the control system, real-time monitoring of the exhaust gas state and automatic control of the inert gas source device 6 are realized, which not only improves the automation level of the device, but also enables the system to flexibly adjust the release of inert gas according to the actual exhaust gas situation to achieve more effective exhaust gas treatment.

[0043] Among them, a trumpet structure is provided on the side of the gas collecting hood 1 facing the tail gas discharge port of the purification device 01. The trumpet structure can effectively guide and gather the tail gas flow and concentrate it into the collection device. This helps to improve the efficiency of tail gas collection and ensure that more tail gas is effectively captured.

[0044] As a preferred embodiment of the above embodiment, a support 51 is further included, and the bottoms of the glass tube 2 and the gas sealing cover 5 are concentrically arranged on the support 51, and a through hole is arranged in the center of the support 51, and the exhaust gas passes through the through hole and enters the glass tube 2. Specifically, the support 51, as a supporting point at the bottom, can effectively support and balance the weight of the glass tube 2 and the gas sealing cover 5. The glass tube 2 and the gas sealing cover 5 are concentrically arranged on the support 51, which can ensure that the space of the interlayer between the glass tube 2 and the gas sealing cover 5 is equal, which is conducive to the uniform entry of the inert gas into the glass tube 2, the uniform cooling of the exhaust gas in the glass tube 2, and the improvement of the exhaust gas cooling rate.

[0045] In this embodiment, a sealed connection is adopted between the gas sealing cover 5 and the support 51. The sealed connection helps to reduce gas leakage, thereby reducing energy waste.

[0046] Among them, a pressure detection device is provided on the gas sealing cover 5. The pressure detection device can provide real-time monitoring of the gas sealing cover 5 in the system. When the pressure in the cover exceeds the set range, the system can issue an alarm to notify the operator to check and maintain the glass tube 2, replace the glass tube 2, or clean the glass tube 2 to ensure the smooth flow of the through hole 21 on the side wall of the glass tube 2 and reduce the risk of accidents.

[0047] As a preferred embodiment, the number of the inert gas inlet ports 52 is at least two, and the inert gas inlet ports 52 are symmetrically arranged on the side of the glass tube 2. This helps the inert gas to quickly fill the interlayer between the gas sealing cover 5 and the glass tube 2, and the periphery of the glass tube 2 is surrounded by the inert gas. The negative pressure in the glass tube 2 presses the inert gas into the glass tube 2 evenly, cools the high-temperature exhaust gas in the glass tube 2, and accelerates the cooling rate.

[0048] In this embodiment, the through holes 21 are evenly arranged on the side wall of the glass tube 2 to ensure that the low-temperature inert gas can be evenly pressed into the glass tube 2 and mixed with the high-temperature exhaust gas in the glass tube 2 to cool the exhaust gas inside and increase the exhaust gas cooling speed.

[0049] Among them, the through hole 21 is provided with a taper, and the large end of the through hole 21 faces the gas sealing cover 5. Specifically, the through hole 21 is provided with a taper, so that one end portion of the through hole 21 is large and the other end portion is small, and the side with the large mouth is arranged to face outward. Under the action of the negative pressure inside the glass tube 2, it is convenient to press the low-temperature inert gas into the glass tube 2. The larger opening area of ​​the mouth at the large end is helpful to capture more low-temperature inert gas and improve the gas pressing efficiency. The mouth at the small end makes the low-temperature inert gas injected into the glass tube 2 faster and injected farther, ensuring that the exhaust gas in the central area of ​​the glass can also be cooled, thereby improving the overall cooling rate.

[0050] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-purity quartz sand chlorination purification tail gas collection device, It is characterized in that It comprises a gas collecting hood, a glass tube, an exhaust gas exhaust pipe, a fan, and a gas sealing hood and an inert gas source device arranged on the outer layer of the glass tube in series; An inert gas inlet is provided on the side of the gas sealing cover, and the inert gas inlet is connected to the gas outlet of the inert gas source device; The side wall of the glass tube is provided with a plurality of through holes, and the through holes enable the gas sealing cover to communicate with the glass tube; A detection point is arranged in the exhaust gas discharge pipe, and the detection result of the detection point is connected to the inert gas source device.

2. The high-purity quartz sand chlorination purification tail gas collection device according to claim 1, It is characterized in that The detection result of the detection point is connected to the fan.

3. The high-purity quartz sand chlorination purification tail gas collection device according to claim 1, It is characterized in that The detection point is provided with at least one of a concentration sensor and a temperature sensor.

4. The high-purity quartz sand chlorination purification tail gas collection device according to claim 1, It is characterized in that A trumpet structure is provided on one side of the gas collecting hood facing the tail gas discharge port of the purification equipment.

5. The high-purity quartz sand chlorination purification tail gas collection device according to claim 1, It is characterized in that It also includes a support, the glass tube and the bottom of the gas sealing cover are concentrically arranged on the support, and a through hole is arranged at the center of the support, and the exhaust gas enters the glass tube through the through hole.

6. The high-purity quartz sand chlorination purification tail gas collection device according to claim 5, It is characterized in that The gas sealing cover and the support are sealed.

7. The high-purity quartz sand chlorination purification tail gas collection device according to claim 1, It is characterized in that The gas sealing cover is provided with a pressure detection device.

8. The high-purity quartz sand chlorination purification tail gas collection device according to claim 1, It is characterized in that The number of the inert gas inlets is at least two, and the inert gas inlets are symmetrically arranged on the sides of the glass tube.

9. The high-purity quartz sand chlorination purification tail gas collection device according to claim 1, It is characterized in that The through holes are evenly arranged on the side wall of the glass tube.

10. The high-purity quartz sand chlorination purification tail gas collection device according to claim 1, It is characterized in that The through hole is provided with a taper, and the large end of the through hole faces the gas sealing cover.

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