CN211924885U - A connecting device that is arranged in titanium white powder production acidolysis pot chimney - Google Patents
A connecting device that is arranged in titanium white powder production acidolysis pot chimney Download PDFInfo
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- CN211924885U CN211924885U CN202020215860.8U CN202020215860U CN211924885U CN 211924885 U CN211924885 U CN 211924885U CN 202020215860 U CN202020215860 U CN 202020215860U CN 211924885 U CN211924885 U CN 211924885U
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Abstract
The utility model discloses a connecting device that is arranged in titanium white powder production acidolysis pot chimney belongs to acidolysis tail gas seal technical field. The utility model discloses a liquid seal mechanism, check keep off mechanism and flexible coupling mechanism, liquid seal mechanism be annular cavity structure, contain sealing liquid in annular cavity, and in the lower extreme that check kept off the mechanism inserted sealing liquid, flexible coupling mechanism included the flexible coupling expansion joint, and flexible coupling mechanism, liquid seal mechanism and check kept off and form confined sealed area between the mechanism, and regional the intussuseption is filled with sealing gas. The utility model discloses a main aim at overcomes among the prior art sealed mode bearing pressure less, easily produces the not enough of gas leakage phenomenon, provides a connecting device that is arranged in titanium white powder production acidolysis pot chimney. The utility model discloses a set up the sealing mechanism of two parts, liquid seal mechanism and flexible coupling mechanism promptly, synthesize the pressure-bearing, both can avoid gas leakage and the occupational health danger that leads to, can effectively prolong flexible coupling mechanism life again.
Description
Technical Field
The utility model relates to an acidolysis tail gas seal technical field, more specifically say, relate to a connecting device that is arranged in titanium white powder production acidolysis pot chimney.
Background
In the sulfuric acid process, the acidolysis process converts different components in the titanium ore into soluble forms to facilitate separation of valuable TiO from impurities2. Titanium ore reacts with concentrated sulfuric acid to generate porous TiOSO4Lumps, ferrous sulfate and other metal sulfates. Then porous TiOSO4The cake is leached with water and recovered weak spent acid to facilitate separation of impurities in downstream processes.
The waste gas from acidolysis reaction is composed of air, steam, acid drops and acid mist (SO)3And H2SO4) The total discharge amount is not large, but the discharge amount per unit time is huge, the temperature is high, the acid content is large, and the total discharge gas volume is 25000m calculated by 24 tons of ore feeding amount and 40 tons of concentrated sulfuric acid in a single pot3The discharge is concentrated within 5 minutes, the requirements on the sealing property and the strength of the connecting parts such as a chimney and a pot cover of the acidolysis pot are high no matter the violent vibration during the reaction or the scouring corrosion of high-temperature acid gas, and the treatment of the tail gas of the acidolysis is still a great industrial problem up to now.
The main component of ilmenite is FeOOTiO2Thus, the main reactions of acidolysis of titanium ores are:
FeOTiO2(s)+2H2O(l)＝TiOSO4(aq+s)+2H2O(l)+FeSO4(aq+s)
the main component of the titanium slag is TiO2Also contains some Ti2O3The main reaction is as follows:
TiO2(s)+H2SO4(l)＝TiOSO4(aq+s)+H2O
Ti2O3(s)+3H2SO4(l)＝Ti2(SO4)3(aq+s)+3H2O(l)
the above reactions are exothermic reactions, and the internal temperature of the generated solid phase material is as high as 200 ℃ and 250 ℃, and is accompanied by severe vibration which can generate obvious shaking feeling for workers in the plant.
The connection mode of the pot cover and the chimney commonly used in the industry mainly comprises a water seal type and a soft connection type:
1) water-sealed:
the water-sealed connection mode is sealed by a water tank, and the gap is used for relieving violent shaking and vibration in the reaction process, so that the problem of thermal expansion stress of a chimney is solved, and the equipment is damaged slightly.
For example, the Chinese patent application (application number: 201910484840.2, application date: 2019, 6 and 5) entitled "a water seal cover for a steam hydrolysis pot" discloses a water seal cover for a steam hydrolysis pot, which can fill gaps in the water seal cover through water and play roles in heat preservation and pressure maintaining. However, when the scheme is used for connecting the pot cover of the acidolysis pot and the chimney in titanium dioxide production, the water seal is not enough to bear the pressure during acidolysis reaction due to the limited height of the water seal, so that the gas leakage phenomenon can occur during acidolysis reaction, the environment of an operation site is poor, and occupational health hazards exist.
2) The flexible connection mode:
the soft connection type connection mode has guaranteed air tightness, can also cope with violent shaking and vibration in the reaction process, and solves the problem of thermal expansion stress of the chimney.
For example, the Chinese patent application (application No. 201910273554.1, application date: 2019, 4 and 6) entitled "Flexible expansion joint for desulfurization flue System and method for on-site installation" discloses a flexible expansion joint for desulfurization flue System and method for on-site installation, which can absorb stress or displacement generated by mechanical vibration, and which is provided with a high temperature resistance and corrosion resistance at the joint of flue and desulfurization tower. However, when the patent scheme is used for connecting the pot cover of the acidolysis pot and the chimney in the production of titanium white, when the rubber material is adopted for manufacturing, a large amount of heat can directly wash away the rubber during acidolysis reaction, so that the service life is short, and the maintenance cost is high.
Therefore, the technical personnel in the field are dedicated to develop the connecting device for the chimney of the acidolysis pot in the production of titanium dioxide, the sealing effect can be effectively improved, the service life can be prolonged, and the maintenance cost can be reduced.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model aims to overcome among the prior art that sealing means bears pressure less, easily produces the not enough of gas leakage phenomenon, provides a connecting device that is arranged in acidolysis pot chimney of titanium white powder production. The utility model discloses a set up the sealing mechanism of two parts, liquid seal mechanism and flexible coupling mechanism promptly, synthesize the pressure-bearing, both can avoid gas leakage, can effectively prolong flexible coupling mechanism life again.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a connecting device for acidolysis pot chimney in titanium white production, including liquid seal mechanism and check mechanism, the liquid seal mechanism is annular cavity structure, mainly comprises first liquid shrouding, liquid seal bottom surface and second liquid shrouding, wherein first liquid shrouding is the side wall face of acidolysis pot chimney; the annular cavity is filled with sealing liquid, and the lower end of the grid blocking mechanism is inserted into the sealing liquid; the flexible connection expansion joint is characterized by further comprising a flexible connection mechanism, the flexible connection mechanism comprises a flexible connection expansion joint, the upper end of the flexible connection expansion joint is connected with the grid blocking mechanism, the lower end of the flexible connection expansion joint is connected with the second liquid sealing plate, a sealed area is formed among the flexible connection mechanism, the liquid sealing mechanism and the grid blocking mechanism, and sealing gas is filled in the sealed area.
As a further improvement, the lattice blocking mechanism is of an integrated structure.
As a further improvement, the check keep off the mechanism and comprise first baffle and second baffle, and first baffle and second baffle pass through baffle fixed knot and construct and can dismantle the connection.
As a further improvement of the utility model, the flexible connection expansion joint is made of non-metal fabric, rubber or alloy material.
As a further improvement, the flexible coupling expansion joint is connected with the second liquid seal board through first connection structure, and the flexible coupling expansion joint is connected with the second baffle through second connection structure, and first connection structure and second connection structure are bolted connection structure or flange joint structure.
As a further improvement, the flexible connection expansion joint is made of a titanium plate and is connected with the second liquid sealing plate and the second baffle plate through welding.
As a further improvement, the distance between the first liquid sealing plate and the first baffle is greater than the distance between the second liquid sealing plate and the first baffle.
As a further improvement of the utility model, the distance between the first liquid sealing plate and the first baffle is 1.5 to 2.5 times that between the second liquid sealing plate and the first baffle.
As a further improvement, the third liquid sealing plate is further arranged on the second liquid sealing plate, and the distance from the third liquid sealing plate to the first baffle is less than the distance from the second liquid sealing plate to the first baffle.
As a further improvement of the utility model, the distance from the second liquid sealing plate to the first baffle is 1.5 to 2.5 times the distance from the third liquid sealing plate to the first baffle.
As a further improvement, the utility model has at least two continuous acidolysis pot chimney connection devices, wherein the lower part fixed connection of the liquid seal mechanism of the acidolysis pot chimney connection device's of acidolysis pot chimney connection device's the upper portion of blocking mechanism and the adjacent top of the acidolysis pot chimney connection device of below.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a connecting device for acidolysis pot chimney in titanium white production, through setting up the sealing mechanism of two parts, namely liquid seal mechanism and flexible coupling mechanism, synthesize the pressure-bearing, can effectively avoid gas leakage, effectively avoid operation site environment difference and occupational health harm; simultaneously through set up liquid seal mechanism before soft coupling mechanism, avoid inside heat and flue gas and soft coupling mechanism's direct contact, can effectively prolong soft coupling mechanism life, effectively reduce the maintenance cost, also solved rocking of acidolysis pot simultaneously, chimney thermal energy stress scheduling problem, the utility model has the advantages of reasonable design, the principle is simple, convenient to popularize and use.
(2) The utility model discloses a connecting device for acidolysis pot chimney in titanium white powder production, the distance through controlling first liquid shrouding and first baffle is greater than the distance of second liquid shrouding and first baffle to and be provided with third liquid shrouding, thereby outside liquid level highly rises more and produce bigger pressure differential when inside liquid level descends equally high, can further prevent the emergence of the gas leakage condition of liquid seal mechanism.
(3) The utility model discloses a connecting device for acid hydrolysis pot chimney in titanium white powder production, through the acid hydrolysis pot chimney connecting device of a plurality of continuous settings, can bear bigger thermal operating mode, the load of every device reduces, further improves the device effect, also is favorable to further improving the reliability of device and the life-span of extension fixture.
Drawings
FIG. 1 is a schematic view of a connecting device of an acidolysis pot chimney;
FIG. 2 is a schematic view of a bolt connection mode of the soft connection structure;
FIG. 3 is a schematic view of a welding connection of the flexible connection structure;
FIG. 4 is a schematic view of a flange connection manner of the flexible connection structure;
FIG. 5 is a schematic view of one embodiment of an acidolysis pot chimney coupling;
FIG. 6 is a schematic view of one embodiment of an acidolysis pot chimney coupling;
FIG. 7 is a schematic structural diagram of a device with two acidolysis pot chimney connection devices.
The reference numerals in the schematic drawings illustrate: 100. a liquid seal mechanism; 110. a first liquid seal plate; 120. a liquid seal bottom surface; 130. a second liquid seal plate; 131. a third liquid seal plate; 200. a blocking mechanism; 210. a first baffle plate; 220. a second baffle; 230. a baffle plate fixing structure; 300. a flexible connection mechanism; 310. a first connecting structure; 320. flexibly connecting an expansion joint; 330. a second connecting structure; 400. sealing the liquid; 500. sealing the gas; 600. flue gas.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
The structure, proportion, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention has no technical essence, and any structural modification, proportion relation change or size adjustment should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
Example 1
Referring to fig. 1, the connecting device for the chimney of the acidolysis pot in titanium dioxide production according to the present embodiment includes a liquid sealing mechanism 100 and a blocking mechanism 200, where the liquid sealing mechanism 100 is an annular cavity structure and mainly includes a first liquid sealing plate 110, a liquid sealing bottom surface 120 and a second liquid sealing plate 130, and the blocking mechanism 200 is a flue of the chimney. In operation, the flue gas 600 moves upward in the inner area of the chimney, and passes through the inner area surrounded by the connecting device of this embodiment.
The annular cavity contains the sealing liquid 400, which mainly functions to isolate the smoke 600 inside, and the lower end of the blocking mechanism 200 is inserted into the sealing liquid 400 at a position which is properly deep inside the sealing liquid 400.
Preferably, the sealing liquid 400 is water.
The connection device of this embodiment further comprises a flexible connection mechanism 300, wherein the flexible connection mechanism 300 comprises a flexible connection expansion joint 320, the upper end of the flexible connection expansion joint 320 is connected with the blocking mechanism 200, and the lower end of the flexible connection expansion joint 320 is connected with the second liquid sealing plate 130, so that a closed sealing area is formed among the flexible connection mechanism 300, the liquid sealing mechanism 100 and the blocking mechanism 200, and the area is filled with sealing gas 500.
Preferably, the sealing gas 500 is air, which mainly acts to balance the liquid level difference of the sealing liquid 400 between the inside and the outside of the liquid seal mechanism 100 by the pressure difference between the sealing gas 500 and the flue gas 600, and on the other hand, the pressure of the sealing gas 500 itself is increased when the sealing gas 500 is compressed, thereby further improving the reliability of the sealing performance of the liquid seal mechanism 100. The soft joint expansion joint 320 will naturally lock air after installation, and this air will form the sealing gas 500.
Preferably, the catch mechanism 200 is a unitary structure.
Preferably, the blocking mechanism 200 is composed of a first blocking plate 210 and a second blocking plate 220, the first blocking plate 210 and the second blocking plate 220 are fixedly connected by a blocking plate fixing structure 230, and the blocking plate fixing structure 230 ensures that the first blocking plate 210 and the second blocking plate 220 are sealed. The flexible expansion joint 320 is connected to the second plate 130 by a first connecting structure 310 and the flexible expansion joint 320 is connected to the second baffle 220 by a second connecting structure 330. Baffle fixed knot constructs 230 is detachable, can conveniently dismantle, change flexible coupling expansion joint 320 and second baffle 220, and the maintenance of the later stage of being convenient for reduces the maintenance cost.
Preferably, the flexible connecting expansion joint 320 is made of non-metal fabric, rubber or alloy material.
Referring to fig. 2 and 4, preferably, the flexible expansion joint 320 is connected to the second hydraulic sealing plate 130 through a first connecting structure 310, the flexible expansion joint 320 is connected to the second baffle 220 through a second connecting structure 330, and the first connecting structure 310 and the second connecting structure 330 are bolt connecting structures, flange connecting structures, or other existing connecting methods that can ensure sealing performance.
Referring to fig. 3, preferably, the flexible connecting expansion joint 320 is made of a titanium plate, and the flexible connecting expansion joint 320 is connected with the second liquid sealing plate 130 and the second baffle 220 by welding, and the structure may be a C-shaped titanium plate, which is corrosion resistant and can achieve a longer service life.
Preferably, the flexible connecting expansion joint 320 is made of a pre-vulcanized butyl rubber plate, the surfaces of the base body and the rubber plate are polished by a grinder during installation, attachments on the surfaces of the base body and the rubber plate are thoroughly removed, the surface of the base body presents certain roughness, the adhesive is coated in batches, the pre-vulcanized butyl rubber plate is sequentially adhered to the base body in blocks, the adhesive is well cured, and the pre-vulcanized butyl rubber plate is firmly adhered to the base body. And finally, reinforcing the connecting position of the pre-vulcanized butyl rubber plate and the base body in a hoop holding mode and the like.
Example 2
With reference to fig. 5, the basic structure of the connecting device for the chimney of the acidolysis pot in titanium dioxide production according to the present embodiment is the same as that of embodiment 1, and the improvement is as follows:
the distance between the first liquid sealing plate 110 and the first baffle 210 is larger than that between the second liquid sealing plate 130 and the first baffle 210. By adopting the arrangement mode, when the liquid level of the sealing liquid 400 at the inner side of the liquid sealing mechanism 100 is lowered, the height of the liquid level of the sealing liquid 400 at the outer side of the liquid sealing mechanism 100, which is increased correspondingly, is increased, so that when the liquid level of the sealing liquid 400 at the inner side of the liquid sealing mechanism 100 is lowered by the same height, the liquid level difference generated by the sealing liquid 400 of the liquid sealing mechanism 100 is increased, a larger internal and external pressure difference is generated to balance the pressure increase caused by the high temperature of the flue gas 600 inside, and good sealing performance is ensured.
Preferably, the distance between the first hydraulic sealing plate 110 and the first baffle 210 is 1.5-2.5 times that between the second hydraulic sealing plate 130 and the first baffle 210, and such an arrangement mode does not change the original structure and connection mode too much, and can effectively improve the sealing performance of the connection device.
Example 3
With reference to fig. 6, the basic structure of the connecting device for the chimney of the acidolysis pot in titanium dioxide production according to the present embodiment is the same as that of embodiment 1, and the improvement is as follows:
the third liquid sealing plate 131 is further arranged on the upper portion of the second liquid sealing plate 130, the distance from the third liquid sealing plate 131 to the first baffle plate 210 is smaller than the distance from the second liquid sealing plate 130 to the first baffle plate 210, and the structure can enable the liquid of the sealing liquid 400 to enter an area defined by the third liquid sealing plate 131 and the first baffle plate 210 when the liquid level of the sealing liquid 400 on the outer side of the liquid sealing mechanism 100 rises, and the bottom area of the area is smaller than the area defined by the second liquid sealing plate 130 and the first baffle plate 210, so that when the liquid level of the sealing liquid 400 on the inner side of the liquid sealing mechanism 100 falls to the same height, the liquid level difference generated by the sealing liquid 400 of the liquid sealing mechanism 100 is increased, a larger inner and outer pressure difference is generated to balance the pressure increase caused by the high temperature of the smoke 600 inside, and good sealing performance is ensured.
It should be noted that the connection device of the present embodiment may also be improved on the basis of embodiment 2, and the same improvement may further improve the sealing performance of the connection device.
Preferably, the distance from the second liquid sealing plate 130 to the first baffle 210 is 1.5 to 2.5 times the distance from the third liquid sealing plate 131 to the first baffle 210.
Example 4
With reference to fig. 7, the basic structure of the connecting device for the chimney of the acidolysis pot in titanium dioxide production according to the present embodiment is the same as that of embodiment 1, and the improvement is as follows:
the acidolysis pot chimney connection device is provided with a plurality of continuously arranged acidolysis pot chimney connection devices, wherein the upper part of the grid blocking mechanism 200 of the acidolysis pot chimney connection device below is fixedly connected with the lower part of the liquid sealing mechanism 100 of the acidolysis pot chimney connection device above and adjacent to the grid blocking mechanism, so that a continuous connection device is formed, the working condition of larger heat can be borne, meanwhile, the load of each device is reduced, the effect of the device is further improved, and the reliability of the device is further improved, and the service life of the device is prolonged.
Preferably, the device is provided with two continuously arranged acidolysis pot chimney connecting devices, the two connecting devices can mutually supplement and share the pressure, and the complexity of the whole connecting device is balanced, the reliability of the device is ensured, and the service life of the device is prolonged.
Preferably, a plurality of the continuously arranged acidolysis pot chimney connecting devices can be arranged according to the requirement.
It should be noted that the connection device of the present embodiment can also be improved on the basis of embodiments 2 and 3, and the same improvement can be made, so that the sealing performance of the connection device can be further improved.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (11)
1. A connecting device for an acidolysis pot chimney in titanium dioxide production comprises a liquid seal mechanism (100) and a blocking mechanism (200), wherein the liquid seal mechanism (100) is of an annular cavity structure and mainly comprises a first liquid seal plate (110), a liquid seal bottom surface (120) and a second liquid seal plate (130), wherein the first liquid seal plate (110) is a side wall surface of the acidolysis pot chimney; sealing liquid (400) is contained in the annular cavity, and the lower end of the grid blocking mechanism (200) is inserted into the sealing liquid (400); the method is characterized in that: the flexible connection structure further comprises a flexible connection mechanism (300), the flexible connection mechanism (300) comprises a flexible connection expansion joint (320), the upper end of the flexible connection expansion joint (320) is connected with the blocking mechanism (200), the lower end of the flexible connection expansion joint (320) is connected with the second liquid sealing plate (130), so that a closed sealing area is formed among the flexible connection mechanism (300), the liquid sealing mechanism (100) and the blocking mechanism (200), and sealing gas (500) is filled in the area.
2. The connecting device for the chimney of the acidolysis pot in titanium dioxide production as claimed in claim 1, wherein: the blocking mechanism (200) is of an integrated structure.
3. The connecting device for the chimney of the acidolysis pot in titanium dioxide production as claimed in claim 1, wherein: the blocking mechanism (200) is formed by detachably connecting a first baffle plate (210) and a second baffle plate (220).
4. The connecting device for the chimney of the acidolysis pot in titanium dioxide production as claimed in claim 3, wherein: the flexible connection expansion joint (320) is made of non-metal fabric, rubber or alloy materials.
5. The connecting device for the chimney of the acidolysis pot in titanium dioxide production as claimed in claim 4, wherein: the flexible connection expansion joint (320) is connected with the second hydraulic sealing plate (130) through a first connecting structure (310), the flexible connection expansion joint (320) is connected with the second baffle plate (220) through a second connecting structure (330), and the first connecting structure (310) and the second connecting structure (330) are bolt connecting structures or flange connecting structures.
6. The connecting device for the chimney of the acidolysis pot in titanium dioxide production as claimed in claim 3, wherein: the flexible connection expansion joint (320) is made of a titanium plate, and the flexible connection expansion joint (320) is connected with the second liquid sealing plate (130) and the second baffle plate (220) through welding.
7. The connecting device for the chimney of the acidolysis pot in titanium dioxide production as claimed in claim 6, wherein: the distance between the first liquid sealing plate (110) and the first baffle plate (210) is larger than that between the second liquid sealing plate (130) and the first baffle plate (210).
8. The connecting device for the chimney of the acidolysis pot in titanium dioxide production as claimed in claim 7, wherein: the distance between the first liquid sealing plate (110) and the first baffle plate (210) is 1.5 to 2.5 times that between the second liquid sealing plate (130) and the first baffle plate (210).
9. The connecting device for the chimney of the acidolysis pot in titanium dioxide production as claimed in claim 8, wherein: and a third liquid sealing plate (131) is further arranged on the upper part of the second liquid sealing plate (130), and the distance from the third liquid sealing plate (131) to the first baffle plate (210) is smaller than the distance from the second liquid sealing plate (130) to the first baffle plate (210).
10. The connecting device for the chimney of the acidolysis pot in titanium dioxide production as claimed in claim 9, wherein: the distance between the second liquid sealing plate (130) and the first baffle plate (210) is 1.5-2.5 times of the distance between the third liquid sealing plate (131) and the first baffle plate (210).
11. The connecting device for the chimney of the acidolysis pot in titanium dioxide production as claimed in any one of claims 1 to 10, wherein: the device is provided with at least two continuously arranged acidolysis pot chimney connecting devices, wherein the upper part of the grid blocking mechanism (200) of the acidolysis pot chimney connecting device at the lower part is fixedly connected with the lower part of the liquid sealing mechanism (100) of the acidolysis pot chimney connecting device at the adjacent upper part.
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| CN202020215860.8U CN211924885U (en) | 2020-02-25 | 2020-02-25 | A connecting device that is arranged in titanium white powder production acidolysis pot chimney |
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