CN214438289U

CN214438289U - Dilute sulfuric acid preparation device

Info

Publication number: CN214438289U
Application number: CN202120269839.0U
Authority: CN
Inventors: 赖文贤; 郭露
Original assignee: Xiamen Tungsten Co Ltd
Current assignee: Xiamen Tungsten Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-10-22
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a device is prepared to dilute sulfuric acid, the device is prepared to dilute sulfuric acid includes: a storage tank; the stirring device is arranged on the storage tank and is used for stirring the liquid in the storage tank; the feed liquor pipe, the feed liquor pipe is including the feed liquor section and the play liquid section that communicate each other, the one end of feed liquor section is located outside the storage tank, it is located to go out the liquid section in the storage tank, just it is formed with a plurality of liquid outlets, a plurality of to go out the liquid section on the liquid outlet interval set up and all with the inside intercommunication of storage tank. According to the utility model discloses a device is prepared to dilute sulfuric acid, from the concentrated sulfuric acid of feed liquor pipe inflow can flow to the storage tank in with the low discharge, avoid concentrated sulfuric acid and water reaction to produce a large amount of heats and make the storage tank take place thermal expansion phenomenon to can reduce the setting of middle groove in the device is prepared to dilute sulfuric acid, and then can reduce the cost, the power consumption and the water consumption that the device was prepared to dilute sulfuric acid, be convenient for simultaneously overhaul the feed liquor pipe.

Description

Dilute sulfuric acid preparation device

Technical Field

The utility model belongs to the technical field of the sulphuric acid is prepared and specifically relates to a device is prepared to dilute sulphuric acid is related to.

Background

In the related art, an intermediate tank is usually adopted in a dilute sulfuric acid preparation device to intensively dilute concentrated sulfuric acid, a coil pipe on the outer circumferential side of the intermediate tank is used for cooling a solution in the intermediate tank, and finally, dilute sulfuric acid after primary dilution is introduced into the dilute sulfuric acid tank for secondary dilution. However, the above dilute sulfuric acid preparation method makes the manufacturing cost and extra power consumption of the dilute sulfuric acid preparation device higher, and the concentrated sulfuric acid feeding pipe communicated with the inside of the intermediate tank is easily corroded by the liquefaction of the acid gas, so that a great potential safety hazard of concentrated sulfuric acid leakage exists, and the pipeline maintenance workload is large.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a dilute sulfuric acid preparation device, which can reduce the arrangement of intermediate tanks in the dilute sulfuric acid preparation device, and reduce the manufacturing cost, power consumption and water consumption of the dilute sulfuric acid preparation device.

According to the utility model discloses device is prepared to dilute sulphuric acid, include: a storage tank; the stirring device is arranged on the storage tank and is used for stirring the liquid in the storage tank; the feed liquor pipe, the feed liquor pipe is including the feed liquor section and the play liquid section that communicate each other, the one end of feed liquor section is located outside the storage tank, it is located to go out the liquid section in the storage tank, just it is formed with a plurality of liquid outlets, a plurality of to go out the liquid section on the liquid outlet interval set up and all with the inside intercommunication of storage tank.

According to the utility model discloses device is prepared to dilute sulphuric acid, through the feed liquor section and the play liquid section that set the feed liquor pipe to communicate each other, and the one end of feed liquor section is established outside the storage tank, goes out the liquid section and establishes in the storage tank, goes out the liquid section and goes up the interval and be equipped with a plurality of liquid outlets with the storage tank intercommunication. Therefore, the concentrated sulfuric acid flowing from the liquid inlet pipe can flow into the storage tank at a small flow rate, and the phenomenon that the storage tank is thermally expanded due to the fact that the concentrated sulfuric acid reacts with water to generate a large amount of heat is avoided, so that the arrangement of an intermediate tank in the dilute sulfuric acid preparation device can be reduced, the manufacturing cost, the power consumption and the water consumption of the dilute sulfuric acid preparation device can be further reduced, and meanwhile the liquid inlet pipe is convenient to overhaul.

According to some embodiments of the present invention, each the cross-sectional diameter of the liquid outlet is D, wherein D satisfies: d is more than or equal to 10mm and less than or equal to 20 mm.

According to some embodiments of the utility model, it is a plurality of the even interval of liquid outlet sets up.

According to some embodiments of the utility model, every liquid outlet department is equipped with the hydrojet pipe.

According to some embodiments of the utility model, go out the liquid section and be cyclic annular or straight line shape, it arranges to go out the liquid section level upper portion in the storage tank.

According to some embodiments of the invention, the liquid inlet section is formed in a curved shape.

According to some embodiments of the invention, the feed liquor pipe is a 254SMO piece.

According to some embodiments of the invention, the dilute sulfuric acid preparation device further comprises: the mounting bracket is arranged in the storage tank, and at least one part of the liquid outlet section is supported on the mounting bracket.

According to some embodiments of the invention, the mounting bracket comprises: the upper end of the first support section is connected with the top wall in the storage tank; the second support section is connected with the lower end of the first support section and extends towards the direction of the central axis of the storage tank, and at least one part of the liquid outlet section is supported on the second support section.

According to some embodiments of the invention, the stirring device comprises: the driver is arranged outside the storage tank; the stirring shaft, the (mixing) shaft with the driver links to each other, the free end of (mixing) shaft stretches into in the storage tank, be equipped with on the (mixing) shaft along two at least stirring vane that the axial interval of (mixing) shaft set up.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a dilute sulfuric acid make-up apparatus according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A circled in FIG. 1;

fig. 3 is a front view of a liquid inlet pipe of a dilute sulfuric acid preparation device according to an embodiment of the present invention;

fig. 4 is a top view of a liquid inlet pipe of a dilute sulfuric acid preparation device according to an embodiment of the present invention.

Reference numerals:

100: a dilute sulfuric acid preparation device;

1: a storage tank; 2: a stirring device; 21: a driver;

22: a stirring shaft; 23: a stirring blade; 3: a liquid inlet pipe;

31: a liquid inlet section; 32: a liquid outlet section; 321: a liquid outlet;

33: a liquid spraying pipe; 4: mounting a bracket; 41: a first support section;

42: a second stent section.

Detailed Description

A dilute sulfuric acid dispensing apparatus 100 according to an embodiment of the present invention is described below with reference to fig. 1-4.

As shown in fig. 1-4, a dilute sulfuric acid preparation apparatus 100 according to an embodiment of the present invention includes a storage tank 1, a stirring device 2, and a liquid inlet pipe 3.

Specifically, the stirring device 2 is provided on the tank 1, and the stirring device 2 is used to stir the liquid in the tank 1. For example, in the example of fig. 1, one end of the stirring device 2 protrudes into the tank 1. When the dilute sulfuric acid preparation device 100 works, after sufficient concentrated sulfuric acid is added into the storage tank 1, an operator can start the stirring device 2 to stir the concentrated sulfuric acid and water in the storage tank 1, so that the concentrated sulfuric acid can be fully mixed with the water to dilute the concentrated sulfuric acid into the dilute sulfuric acid.

Feed liquor pipe 3 is outside being located storage tank 1 including feed liquor section 31 and the play liquid section 32 that communicate each other, feed liquor section 31's one end, conveniently adds concentrated sulfuric acid to feed liquor section 31 in, makes things convenient for operating personnel to overhaul feed liquor pipe 3 simultaneously. The liquid outlet section 32 is located in the storage tank 1, and a plurality of liquid outlets 321 are formed on the liquid outlet section 32, and in the description of the present invention, "a plurality" means two or more. A plurality of liquid outlets 321 set up at intervals and all communicate with storage tank 1 is inside. The plurality of liquid outlets 321 can divide the concentrated sulfuric acid in the liquid outlet section 32, so that the concentrated sulfuric acid flowing to the liquid outlet section 32 can be divided into a plurality of strands of concentrated sulfuric acids with small flow, and the plurality of strands of concentrated sulfuric acids with small flow can flow into the storage tank 1 from the corresponding liquid outlets 321, thereby effectively avoiding the phenomenon that the large-flow concentrated sulfuric acid is injected into the storage tank 1 and is mixed with water in the storage tank 1 to generate a large amount of heat so as to cause the storage tank 1 to generate thermal expansion. Therefore, compared with the traditional dilute sulfuric acid preparation device, the dilute sulfuric acid preparation device 100 reduces the arrangement of intermediate tanks, can effectively reduce the manufacturing cost of the dilute sulfuric acid preparation device 100, for example, save the investment of equipment by about 190000 yuan, can reduce the power consumption and the water consumption of the dilute sulfuric acid preparation device 100, for example, save the power consumption of 4092 yuan/year and the water consumption of 1500 yuan/year, simultaneously, the temperature of the solution in the storage tank 1 is lower, and the thermal expansion phenomenon does not occur in the storage tank 1.

When the dilute sulfuric acid preparation device 100 works, the concentrated sulfuric acid may flow to the liquid outlet section 32 through the one end of the liquid inlet section 31, and the concentrated sulfuric acid in the liquid outlet section 32 may be divided into a plurality of strands of concentrated sulfuric acid with small flow rate, and flow into the storage tank 1 through the plurality of liquid outlets 321. When a sufficient amount of concentrated sulfuric acid is added into the storage tank 1, an operator can start the stirring device 2 to sufficiently mix the water and the concentrated sulfuric acid in the storage tank 1, so that the concentrated sulfuric acid is diluted into dilute sulfuric acid.

According to the utility model discloses device 100 is prepared to dilute sulfuric acid through the feed liquor pipe 3 set to feed liquor section 31 and the play liquid section 32 that communicate each other, and the one end of feed liquor section 31 is established outside storage tank 1, goes out the liquid section 32 and establishes in storage tank 1 to make be equipped with on the play liquid section 32 separate each other and with a plurality of liquid outlets 321 of the inside intercommunication of storage tank 1. Therefore, the concentrated sulfuric acid flowing from the liquid inlet pipe 3 can flow into the storage tank 1 at a small flow rate, so that the phenomenon that the storage tank 1 is thermally expanded due to the fact that the concentrated sulfuric acid reacts with water to generate a large amount of heat is avoided, the arrangement of an intermediate tank in the dilute sulfuric acid preparation device 100 can be reduced, the manufacturing cost, the power consumption and the water consumption of the dilute sulfuric acid preparation device 100 can be further reduced, and meanwhile, the liquid inlet pipe 3 is convenient to overhaul.

According to some embodiments of the utility model, the cross section diameter of every liquid outlet 321 is D, and wherein D satisfies: d is more than or equal to 10mm and less than or equal to 20 mm. When D is less than 10mm, the diameter of the liquid outlet 321 is small, which may be unfavorable for the outflow of concentrated sulfuric acid in the liquid outlet section 32. When D is greater than 20mm, the diameter of the liquid outlet 321 is large, the concentrated sulfuric acid in the liquid outlet section 32 may simultaneously flow into the storage tank 1 in a large flow rate, and react with the water in the storage tank 1 to generate a large amount of heat, and the storage tank 1 may easily expand and deform. Therefore, when D is more than or equal to 10mm and less than or equal to 20mm, the concentrated sulfuric acid in the liquid outlet section 32 can flow into the storage tank 1 at a small flow rate, and the deformation caused by the expansion of the storage tank 1 can be effectively avoided.

In some alternative embodiments, the plurality of liquid outlets 321 are evenly spaced. For example, in the example of fig. 4, when the liquid outlet section 32 is annular, one liquid outlet 321 may be provided on the liquid outlet section 32 at intervals of 15 °, and in this case, 25 liquid outlets 321 may be uniformly provided on the liquid outlet section 32. So set up for concentrated sulfuric acid in the play liquid section 32 can be evenly from corresponding liquid outlet 321 outflow and with the water reaction in the storage tank 1, can effectively avoid local water and concentrated sulfuric acid reaction in the storage tank 1 too big heat that produces and make storage tank 1 produce the thermal energy, simultaneously, a plurality of liquid outlets 321 that even interval set up make the structure of going out liquid section 32 simpler, convenient processing.

In some alternative embodiments, a spray tube 33 is provided at each exit port 321. Referring to fig. 3, one end (e.g., the upper end in fig. 3) of the liquid spraying pipe 33 may be connected to the corresponding liquid outlet 321 by welding, and the other end (e.g., the lower end in fig. 3) of the liquid spraying pipe 33 may extend vertically downward in a direction toward the center of the storage tank 1, so that the concentrated sulfuric acid at the liquid outlet 321 may flow into the storage tank 1 along a specific flow path, and the concentrated sulfuric acid is effectively prevented from splashing at the liquid outlet 321 to corrode the liquid outlet section 32.

Alternatively, the liquid outlet section 32 may be in a ring shape (as shown in fig. 4) or a straight shape (not shown), and the liquid outlet section 32 may be horizontally disposed at an upper portion of the storage tank 1. From this, through arranging liquid outlet section 32 level in the upper portion of storage tank 1, can guarantee effectively that the concentrated sulfuric acid of a plurality of liquid outlets 321 departments of liquid outlet section 32 can flow to the storage tank 1 in with roughly the same velocity of flow, can increase the distance between liquid outlet section 32 and the storage tank 1 bottom simultaneously for dilute sulfuric acid preparation device 100 can once prepare a large amount of dilute sulfuric acid, improves the preparation efficiency of dilute sulfuric acid.

According to some embodiments of the present invention, the inlet section 31 is formed in a curved shape. Referring to fig. 1 and 3, the inlet section 31 is generally S-shaped. So set up, can effectively avoid the vapor that has the acid feed liquid to get into feed liquor section 31 and corrode feed liquor section 31 to can reduce the hidden danger that concentrated sulfuric acid revealed effectively, prolong feed liquor section 31's life, and then can reduce the maintenance that dilute sulfuric acid prepared device 100.

In some alternative embodiments, the liquid inlet pipe 3 is a 254SMO piece. 254SMO is an austenitic stainless steel, and 254SMO has good corrosion resistance due to the fact that 254SMO contains a large amount of chemical substances such as nickel, chromium, molybdenum and the like. From this, through setting feed liquor pipe 3 to 254SMO spare, can guarantee effectively that feed liquor pipe 3's anticorrosive performance for feed liquor pipe 3 can not produce because of corroding when using and reveal, guarantees that feed liquor pipe 3 behaviour in service is good.

Alternatively, the liquid inlet section 31 and the liquid outlet section 32 may be connected by flanges to facilitate installation and maintenance of the liquid inlet pipe 3.

Alternatively, the tank 1 may be a piece of PPH (Polyproplyene-Homo, Homo polypropylene). The PPH has the advantages of good chemical corrosion resistance, wear resistance, high temperature resistance, corrosion resistance, ageing resistance and the like, can prolong the service life of the storage tank 1 to the maximum extent, and has low cost and high cost performance.

According to some embodiments of the present invention, the dilute sulfuric acid preparation device 100 further comprises a mounting bracket 4, the mounting bracket 4 is disposed in the storage tank 1, and at least a portion of the liquid outlet section 32 is supported on the mounting bracket 4. For example, in the example of fig. 1 and 2, the dilute sulfuric acid preparation device 100 may include a plurality of mounting brackets 4, the plurality of mounting brackets 4 may be disposed at intervals along the circumference of the storage tank 1, each mounting bracket 4 may have a substantially L-shape, the mounting bracket 4 may include a first bracket section 41 and a second bracket section 42, and an upper end of the first bracket section 41 is connected to a top wall inside the storage tank 1 to fix the mounting brackets 4 inside the storage tank 1. The second bracket section 42 is connected to the lower end of the first bracket section 41 and extends in the direction of the central axis of the storage tank 1, and at least a part of the liquid outlet section 32 is supported on the second bracket section 42. For example, each mounting bracket 4 may be located between two adjacent liquid outlets 321 of the liquid outlet section 32, and the liquid spraying pipe 33 at two adjacent liquid outlets 321 may limit the mounting bracket 4. Therefore, the liquid outlet section 32 can be effectively and stably fixed on the upper part of the storage tank 1, meanwhile, the liquid outlet section 32 is convenient to mount and dismount, and the assembly efficiency can be effectively improved.

According to some embodiments of the present invention, as shown in fig. 1, the stirring device 2 includes a driver 21 and a stirring shaft 22, the driver 21 is disposed outside the storage tank 1, so as to prevent the sulfuric acid in the storage tank 1 from corroding the driver 21. The stirring shaft 22 is connected to the driver 21, for example, the stirring shaft 22 may be connected to the driver 21 by a coupling. The free end of the stirring shaft 22 extends into the storage tank 1, and at least two stirring blades 23 which are arranged along the axial direction of the stirring shaft 22 at intervals are arranged on the stirring shaft 22. When the stirring device 2 works, the at least two stirring blades 23 can stir the water and the concentrated sulfuric acid in the storage tank 1, so that the concentrated sulfuric acid and the water in the storage tank 1 can be mixed more sufficiently, the preparation time of the dilute sulfuric acid can be shortened, and the production efficiency of the dilute sulfuric acid preparation device 100 is improved.

Alternatively, the stirring shaft 22 and the stirring blade 23 may be Q235 pieces, and the outer surfaces of the stirring shaft 22 and the stirring blade 23 may be wrapped with a layer of glass fiber reinforced plastic. With this arrangement, the cost of the stirring apparatus 2 can be reduced while the corrosion resistance of the stirring shaft 22 and the stirring blades 23 is ensured, so that the manufacturing cost of the dilute sulfuric acid preparation apparatus 100 can be further reduced.

Two stirring blades 23 are shown in fig. 1 for illustrative purposes, but it is obvious to those skilled in the art after reading the technical solution of the present application that the solution can be applied to three or more stirring blades 23, which also falls within the protection scope of the present invention.

Alternatively, the driver 21 may be a planetary cycloidal pin gear reducer. But is not limited thereto.

Other configurations and operations of the dilute sulfuric acid dispensing apparatus 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A dilute sulfuric acid preparation device is characterized by comprising:

a storage tank;

the stirring device is arranged on the storage tank and is used for stirring the liquid in the storage tank;

the feed liquor pipe, the feed liquor pipe is including the feed liquor section and the play liquid section that communicate each other, the one end of feed liquor section is located outside the storage tank, it is located to go out the liquid section in the storage tank, just it is formed with a plurality of liquid outlets, a plurality of to go out the liquid section on the liquid outlet interval set up and all with the inside intercommunication of storage tank.

2. The dilute sulfuric acid preparation apparatus according to claim 1, wherein each of said liquid outlets has a cross-sectional diameter D, wherein D satisfies: d is more than or equal to 10mm and less than or equal to 20 mm.

3. The dilute sulfuric acid preparation apparatus as recited in claim 1, wherein said plurality of liquid outlets are uniformly spaced.

4. The dilute sulfuric acid preparation apparatus according to claim 1, wherein a liquid spray pipe is provided at each of said liquid outlets.

5. The dilute sulfuric acid preparation apparatus as claimed in claim 1, wherein the liquid outlet section is annular or linear, and the liquid outlet section is horizontally arranged at the upper part of the storage tank.

6. The dilute sulfuric acid preparation apparatus according to any one of claims 1 to 5, wherein the inlet section is formed in a curved shape.

7. The dilute sulfuric acid preparation apparatus according to any one of claims 1 to 5, wherein the liquid inlet pipe is a 254SMO piece.

8. The dilute sulfuric acid preparation apparatus according to any one of claims 1 to 5, further comprising:

the mounting bracket is arranged in the storage tank, and at least one part of the liquid outlet section is supported on the mounting bracket.

9. The dilute sulfuric acid preparation apparatus of claim 8, wherein the mounting bracket comprises:

the upper end of the first support section is connected with the top wall in the storage tank;

the second support section is connected with the lower end of the first support section and extends towards the direction of the central axis of the storage tank, and at least one part of the liquid outlet section is supported on the second support section.

10. The dilute sulfuric acid preparation apparatus according to any one of claims 1 to 5, wherein the stirring device comprises:

the driver is arranged outside the storage tank;

the stirring shaft, the (mixing) shaft with the driver links to each other, the free end of (mixing) shaft stretches into in the storage tank, be equipped with on the (mixing) shaft along two at least stirring vane that the axial interval of (mixing) shaft set up.