Acid gas protection device for quartz sand purification

Abstract

The utility model discloses a quartz sand purification acid gas protection device, and belongs to the technical field of quartz sand purification acid gas protection. The protection device comprises a cover body, and a circulation cavity is formed in the cover body; the air inlet is communicated with the circulation cavity; the sand outlet communicates with the circulation cavity and is lower than the air inlet, and the sand outlet pipe extends into the circulation cavity through the air inlet and is located above the sand outlet; the air collection opening is communicated with the circulation cavity and is higher than the air inlet, the air collection opening is communicated with a negative pressure assembly, and the technical problem that pollution or corrosion is caused by backflow of acid gas in the current quartz sand purification process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of quartz sand purification acid gas protection, in particular to a quartz sand purification acid gas protection device. Background Art

[0002] Quartz sand acid washing and purification is a commonly used purification method, which mainly uses the characteristics of quartz sand that it is insoluble in acids other than hydrofluoric acid, while impurity minerals can be dissolved by acid to purify quartz sand.

[0003] Before pickling, the quartz sand is temporarily stored in the storage hopper and put into the pickling device after being dried by the drying device. The discharge hopper, drying device and pickling device are connected by pipes. During the pickling process, the prepared pickling liquid is usually put into the pickling device first, and then the quartz sand is put in for pickling. The input of quartz sand usually takes a certain amount of time. During the input process, the pickling liquid has begun to react with impurities. The reaction process may generate heat, causing the pickling liquid to volatilize and produce acidic gas to escape, and the pickling liquid itself also has a certain volatility.

[0004] Acidic gases may flow back along the pipes between the above devices and corrode the connecting pipes and devices, thus shortening their service life and polluting the working environment. Utility Model Content

[0005] The main purpose of the utility model is to provide a quartz sand purification acid gas protection device, aiming to solve the current technical problem of acid gas reflux in the quartz sand acid soaking process.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a quartz sand acid gas purification protection device, which is sleeved on the sand outlet pipe and includes:

[0007] A cover body, wherein the cover body is provided with a flow cavity;

[0008] An air inlet, the air inlet being connected to the flow cavity;

[0009] A sand outlet, the sand outlet is connected to the circulation cavity and is lower than the air inlet, the sand outlet pipe extends into the circulation cavity through the air inlet and is located above the sand outlet;

[0010] An air collecting port, the air collecting port is connected to the circulation cavity and is higher than the air inlet, and the air collecting port is connected to the negative pressure component.

[0011] Optionally, in an embodiment of the present invention, the cover body includes a cylindrical portion, and the cylindrical portion opens the air inlet.

[0012] Optionally, in an embodiment of the utility model, the diameter of the cylindrical portion is greater than the diameter of the sand production pipe, and the sand production pipe is suspended in the cylindrical portion.

[0013] Optionally, in an embodiment of the utility model, the cover body includes a sand outlet portion, the sand outlet portion is gradually tightened along the direction from the air collecting port to the sand outlet, and the sand outlet is opened at the lowest end of the sand outlet portion.

[0014] Optionally, in an embodiment of the present utility model, the sand outlet is a strip-shaped sand outlet.

[0015] Optionally, in an embodiment of the utility model, the cover body includes a guide portion, the guide portion is provided with the air collecting port, and the guide portion is gradually tightened along the direction from the sand outlet to the air collecting port.

[0016] Optionally, in an embodiment of the present utility model, the guide portion and the sand discharge portion have a common wall portion.

[0017] Optionally, in an embodiment of the present invention, the cover body is made of quartz glass.

[0018] Compared with the prior art, the utility model can at least achieve the following beneficial effects. During the acid purification process of quartz sand, the quartz sand is put into a pickling device filled with pickling liquid. The pickling liquid itself has a certain volatility, and under the influence of temperature, the pickling liquid will volatilize a certain amount of acidic gas into the environment. Part of these acidic gases will reflux through the sand outlet pipe. The refluxed acidic gas will pollute the quartz sand and corrode other devices in the upstream process. This scheme proposes a protective device, which is sleeved on the sand outlet pipe through the air inlet, and the quartz sand flowing out of the sand outlet pipe enters the pickling device through the sand outlet. When the acidic gas rises, part of the acidic gas will enter the circulation cavity through the sand outlet, and because a negative pressure component is connected to the air collecting port, the air pressure at the air collecting port in the circulation cavity is smaller, and the acidic gas flows toward the air collecting port to prevent the acidic gas from entering the sand outlet pipe and reflux. In addition, after the protective device cover is installed on the sand outlet pipe, only a small amount of acid gas will enter the flow cavity, and the acid gas entering the flow cavity will also flow toward the air collecting port, reducing the possibility of acid gas flowing back to the sand outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of a quartz sand acid gas purification protection device of the utility model;

[0021] Figure 2 The utility model is a schematic diagram of the structure of a quartz sand acid gas purification protection device after assembly.

[0022] Description of Figure Numbers:

[0023] 100, cover body; 200, cylindrical portion; 210, air inlet; 300, sand outlet; 310, sand outlet; 400, flow guide portion; 410, air collecting port; 500, sand outlet pipe;

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] Reference Figure 1~Figure 2 The utility model provides a quartz sand purification acid gas protection device, which is sleeved on the sand outlet pipe 500 and includes:

[0030] The cover body 100 is provided with a flow cavity;

[0031] An air inlet 210, the air inlet 210 is connected to the flow cavity;

[0032] A sand outlet 310, the sand outlet 310 is connected to the circulation cavity and is lower than the air inlet 210, and the sand outlet pipe 500 extends into the circulation cavity through the air inlet 210 and is located above the sand outlet 310;

[0033] The air collecting port 410 is connected to the circulation cavity and is higher than the air inlet 210 . The air collecting port 410 is connected to the negative pressure component.

[0034] During the acid purification process of quartz sand, the quartz sand is put into a pickling device filled with pickling liquid. The pickling liquid itself has a certain volatility, and under the influence of temperature, the pickling liquid will volatilize a certain amount of acidic gas into the environment. Part of these acidic gases will reflux through the sand outlet pipe 500. The refluxed acidic gas will pollute the quartz sand and corrode other devices in the upstream process. This scheme proposes a protective device, which is sleeved on the sand outlet pipe 500 through the air inlet 210, and the quartz sand flowing out of the sand outlet pipe 500 enters the pickling device through the sand outlet 310. When the pickling gas rises, part of the acidic gas will enter the circulation cavity through the sand outlet 310, and because the air collecting port 410 is connected with a negative pressure component, the air pressure at the air collecting port 410 in the circulation cavity is smaller, and the acidic gas flows toward the air collecting port 410 to prevent the acidic gas from entering the sand outlet pipe 500 and reflux. In addition, after the protective device cover is installed on the sand outlet pipe 500 , only a small amount of acid gas will enter the flow cavity, and the acid gas entering the flow cavity will also flow toward the air collecting port 410 , reducing the possibility of acid gas flowing back to the sand outlet pipe 500 .

[0035] Furthermore, the cover body 100 includes a cylindrical portion 200 , the cylindrical portion 200 is provided with an air inlet 210 , and the diameter of the cylindrical portion 200 is greater than the diameter of the sand outlet pipe 500 , and the sand outlet pipe 500 is suspended in the cylindrical portion 200 .

[0036] In one embodiment, the sand outlet pipe 500 is for rotating sand outlet, that is, the sand outlet pipe 500 outlets sand while rotating around its own axis. In order to prevent the protective device from affecting the operation of the sand outlet pipe 500, the sand outlet pipe 500 is arranged to be opened in the cylindrical part 200, and the diameter of the cylindrical part 200 is larger than the diameter of the sand outlet pipe 500, so that the sand outlet pipe 500 can be suspended in the cylindrical part 200 without generating friction with the inner wall of the cover body 100.

[0037] In addition, since the sand outlet pipe 500 is rotating to outlet sand, the air pressure at the air inlet 210 is slightly lower than the normal air pressure. Under the effect of natural flow and low pressure, some acidic gases will also flow through the air inlet 210 to the air collecting port 410 .

[0038] Furthermore, the cover body 100 includes a sand outlet portion 300 , which is gradually tightened along the direction from the air collecting port 410 to the sand outlet 310 , and the sand outlet 310 is opened at the lowest end of the sand outlet portion 300 .

[0039] The sand outlet 300 is most tightly closed at the sand outlet 310 to facilitate the outflow of quartz sand. The quartz sand flowing out of the sand outlet pipe 500 does not fall accurately to the sand outlet 310, and some of the quartz sand falls on the inner wall of the sand outlet 300, and then gradually slides to the sand outlet 310 to complete the sand outlet.

[0040] When the quartz sand is put into the pickling device, it needs to enter the pickling device as evenly as possible to ensure that the quartz sand can be completely contacted with the pickling liquid for purification. To this end, the shape of the sand outlet 310 is designed to be a strip sand outlet 310. Compared with the circular sand outlet 310, the sand outlet shape of the strip sand outlet 310 is curtain-shaped sand outlet, which can make the quartz sand enter the pickling device more evenly.

[0041] Furthermore, the cover body 100 is provided with a guide part 400, and the guide part 400 is provided with an air collecting port 410. The guide part 400 is gradually tightened toward the air collecting port 410, so that the acid gas can smoothly enter the air collecting port 410. In addition, the air collecting port 410 can be connected to an acid gas treatment device such as a treatment tower to realize acid gas recovery and purification.

[0042] In certain working environments, the quartz sand discharged from the sand outlet pipe 500 is high-temperature quartz sand, so the protective device needs to meet the requirements of high-temperature resistance and acid gas corrosion resistance.

[0043] Preferably, the material of the cover 100 is quartz glass to meet the above requirements. Quartz glass has an extremely high softening point temperature of about 1730°C, can be used at 1100°C for a long time, and the maximum use temperature for a short time can even reach 1450°C. And because it has good thermal stability and can withstand drastic temperature changes, it can directly receive high-temperature quartz sand without preheating it.

[0044] The acid resistance of quartz glass is 30 times that of ceramics and 150 times that of stainless steel. In particular, its chemical stability at high temperatures is unmatched by other engineering materials.

[0045] In addition, the installation of the protective device can be carried out in a variety of ways, such as hoisting or supporting. The installation methods are common knowledge to those skilled in the art and will not be described in detail here.

[0046] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A quartz sand acid gas purification protection device, sleeved on the sand outlet pipe, characterized in that: include: A cover body, wherein the cover body is provided with a flow cavity; An air inlet, the air inlet being connected to the flow cavity; A sand outlet, the sand outlet is connected to the circulation cavity and is lower than the air inlet, the sand outlet pipe extends into the circulation cavity through the air inlet and is located above the sand outlet; An air collecting port, the air collecting port is connected to the circulation cavity and is higher than the air inlet, and the air collecting port is connected to the negative pressure component.

2. The quartz sand acid gas purification protection device according to claim 1, characterized in that: The cover body includes a cylindrical portion, and the cylindrical portion is provided with the air inlet.

3. The quartz sand acid gas purification protection device according to claim 2, characterized in that: The diameter of the cylindrical part is greater than the diameter of the sand production pipe, and the sand production pipe is suspended in the cylindrical part.

4. The quartz sand acid gas purification protection device according to claim 2, characterized in that: The cover body comprises a sand outlet portion, which is gradually tightened along the direction from the air collecting port to the sand outlet port, and the sand outlet port is arranged at the lowest end of the sand outlet portion.

5. The quartz sand acid gas purification protection device according to claim 4, characterized in that: The sand outlet is a strip-shaped sand outlet.

6. The quartz sand acid gas purification protection device according to claim 4, characterized in that: The cover body comprises a guide portion, the guide portion is provided with the air collecting port, and the guide portion is gradually tightened along the direction from the sand outlet to the air collecting port.

7. The quartz sand acid gas purification protection device according to claim 6, characterized in that: The flow guide portion and the sand discharge portion have a common wall portion.

8. The quartz sand acid gas purification protection device according to any one of claims 1 to 7, characterized in that: The cover body is made of quartz glass.

Images