CN107963616B - Evaporator for sulfuric acid concentration - Google Patents
Evaporator for sulfuric acid concentration Download PDFInfo
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- CN107963616B CN107963616B CN201711498885.2A CN201711498885A CN107963616B CN 107963616 B CN107963616 B CN 107963616B CN 201711498885 A CN201711498885 A CN 201711498885A CN 107963616 B CN107963616 B CN 107963616B
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/88—Concentration of sulfuric acid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention provides an evaporator for sulfuric acid concentration, and belongs to the technical field of anti-corrosion equipment. The evaporator for sulfuric acid concentration comprises an anti-corrosion evaporator shell, a plurality of silicon carbide heating sleeves and an anti-corrosion tube plate, wherein the anti-corrosion tube plate is arranged on the anti-corrosion evaporator shell, and an electric heating wire assembly is arranged in each silicon carbide heating sleeve and is installed on the anti-corrosion tube plate and positioned in the anti-corrosion evaporator shell. The evaporator for sulfuric acid concentration uses the silicon carbide heating sleeve, has the characteristics of high heat conductivity, high strength, high temperature resistance, acid and alkali corrosion resistance, is suitable for environments such as high temperature, high pressure, strong acid, strong alkali and the like, has good concentration effect, can prolong the service life of equipment, and reduces the production cost.
Description
Technical Field
The invention relates to the technical field of anti-corrosion equipment, in particular to an evaporator for sulfuric acid concentration.
Background
In the chemical medicine production process, the random environmental protection policy is becoming tighter and tighter, waste acid produced by enterprises is required to be treated or recovered by themselves, and sulfuric acid concentration is a more sulfuric acid recovery method.
In the sulfuric acid concentration process, there are generally two schemes for achieving sulfuric acid concentration of over 85%: scheme one: forced external circulation evaporation concentration is carried out under the vacuum condition; scheme II: the concentration was evaporated under vacuum with a horizontal evaporator submerged under heat.
When the sulfuric acid concentration process needs to meet the condition that the sulfuric acid concentration is over 85 percent, the existing concentration equipment has the problems of difficult material selection and high manufacturing cost; the more the sulfuric acid concentration is required to be high, the less the choice of materials used by manufacturing equipment is, even noble metals such as metallic tantalum are required to be used as heat exchanger materials, the forced circulation pump can only adopt an imported high silicon cast iron pump; the high equipment investment greatly limits the popularization of the sulfuric acid concentration system in the chemical industry.
Disclosure of Invention
The invention aims to provide an evaporator for sulfuric acid concentration, which uses a silicon carbide heating sleeve, has the characteristics of high heat conductivity, high strength, high temperature resistance, acid and alkali corrosion resistance, is suitable for environments such as high temperature, high pressure, strong acid, strong alkali and the like, has a good concentration effect, can prolong the service life of equipment, and reduces the production cost.
The invention is realized by adopting the following technical scheme:
the utility model provides an evaporator for sulfuric acid concentration, includes anticorrosive evaporator shell, many carborundum heating sleeve pipe and anticorrosive tube sheet, and anticorrosive tube sheet sets up in anticorrosive evaporator shell, and every carborundum heating sleeve pipe sets up in anticorrosive tube sheet and is located anticorrosive evaporator shell.
Further, in a preferred embodiment of the present invention, the evaporator for concentrating sulfuric acid further includes a plurality of sealing structures, and each silicon carbide heating sleeve is disposed on the corrosion-preventing tube plate through one sealing structure.
Further, in a preferred embodiment of the present invention, each of the sealing structures includes a compression nut, an anti-corrosion gasket and an anti-corrosion sealing ring, a through hole is provided on the anti-corrosion tube plate, the compression nut is disposed in the through hole, the anti-corrosion gasket is disposed between the compression nut and the anti-corrosion tube plate, a silicon carbide heating sleeve is disposed in the compression nut, and the anti-corrosion sealing ring is disposed between the silicon carbide heating sleeve and the compression nut.
Further, in a preferred embodiment of the present invention, each of the silicon carbide heating sleeves includes a silicon carbide sleeve, an electric heating wire, and an electric heating wire connection element, the silicon carbide sleeve is disposed in the compression nut, the electric heating wire is disposed in the silicon carbide sleeve, and the electric heating wire connection element is connected to one end of the electric heating wire.
Further, in a preferred embodiment of the present invention, the evaporator for concentrating sulfuric acid further includes a fixing structure, where the fixing structure includes a first flange and a second flange, and the first flange and the second flange are both disposed on the shell of the anticorrosion evaporator and are located on two sides of the anticorrosion tube plate.
Further, in a preferred embodiment of the present invention, the fixing structure further includes a first gasket and a second gasket, the first gasket is disposed between the corrosion-preventing tube plate and the first flange, and the second gasket is disposed between the corrosion-preventing tube plate and the second flange.
Further, in the preferred embodiment of the present invention, the above-mentioned anticorrosive evaporator shell and the silicon carbide heating sleeve are both horizontally arranged, the anticorrosive evaporator shell is provided with a steam outlet, a dilute sulfuric acid inlet and a concentrated sulfuric acid outlet, the steam outlet is located at the upper end of the anticorrosive evaporator shell, the concentrated sulfuric acid outlet is located at the lower end of the anticorrosive evaporator shell, and the dilute sulfuric acid inlet is located between the steam outlet and the concentrated sulfuric acid outlet.
Further, in a preferred embodiment of the present invention, the anticorrosive evaporator shell has a first end and a second end along a length direction of the anticorrosive evaporator shell, the first end is provided with an anticorrosive tube plate, the dilute sulfuric acid inlet is close to the first end, and the concentrated sulfuric acid outlet is far away from the first end.
Further, in a preferred embodiment of the present invention, the evaporator for concentrating sulfuric acid further includes a plurality of corrosion-resistant baffles, and the plurality of corrosion-resistant baffles are sequentially disposed at a lower end of the corrosion-resistant evaporator shell at intervals along a direction from the first end to the second end.
Further, in the preferred embodiment of the present invention, each baffle plate is provided with a mounting hole for mounting each silicon carbide heating sleeve and a notch for sulfuric acid circulation, and two adjacent anti-corrosion baffle plate notches are staggered.
The evaporator for sulfuric acid concentration provided by the preferred embodiment of the invention has the beneficial effects that: the anti-corrosion evaporator shell, the anti-corrosion tube plate and the silicon carbide heating sleeve are all made of anti-corrosion materials, so that the evaporator for sulfuric acid concentration is prevented from being corroded by acid liquor, the service life of equipment is prolonged, the production cost of each part is low, and the cost of the equipment is reduced. The silicon carbide heating sleeve has the characteristics of high heat conductivity, high strength, high temperature resistance, acid and alkali corrosion resistance, is suitable for environments such as high temperature, high pressure, strong acid, strong alkali and the like, has good concentration effect when used for the sulfuric acid concentration evaporator, can prolong the service life of equipment and reduce the production cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and other related drawings can be obtained according to the drawings without inventive effort for a person skilled in the art, which also belong to the protection scope of the present invention.
Fig. 1 is a schematic structural view of an evaporator for sulfuric acid concentration according to an embodiment of the present invention;
FIG. 2 is a schematic view of the installation structure of baffles in an evaporator for sulfuric acid concentration according to an embodiment of the present invention;
FIG. 3 is a schematic view of a silicon carbide heating jacket in an evaporator for sulfuric acid concentration according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a sealing structure in an evaporator for sulfuric acid concentration according to an embodiment of the present invention.
Icon: 100-an evaporator for sulfuric acid concentration; 110-a corrosion-resistant evaporator housing; 120-silicon carbide heating sleeve; 130-corrosion-resistant tube sheet; 140-sealing structure; 150-a fixed structure; 160-anti-corrosion baffles; 111-steam outlet; 112-dilute sulfuric acid inlet; 113-concentrated sulfuric acid outlet; 114-a first end; 115-a second end; 161-notch; 116-a first space; 117-a second space; 121-silicon carbide sleeve; 122-an electric heating wire; 123-an electric heating wire connecting element; 141-a compression nut; 142-anti-corrosion gaskets; 143-anti-corrosion sealing rings.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Examples
The present embodiment provides an evaporator 100 for sulfuric acid concentration, mainly for concentrating sulfuric acid that needs to be concentrated by heating and does not generate crystallization. For example: and concentrating the solution of dilute sulfuric acid, dilute nitric acid and the like.
Fig. 1 is a schematic diagram of the structure of an evaporator 100 for sulfuric acid concentration according to the present embodiment. Referring to fig. 1, in the present embodiment, an evaporator 100 for sulfuric acid concentration includes a corrosion-resistant evaporator housing 110, a silicon carbide heating jacket 120, a corrosion-resistant tube sheet 130, a sealing structure 140, a fixing structure 150, and a corrosion-resistant baffle 160. The anticorrosion evaporator shell 110 is used for containing sulfuric acid, an anticorrosion baffle plate is arranged in the anticorrosion evaporator shell 110, the silicon carbide heating sleeve 120 passes through the anticorrosion baffle plate and is arranged on the anticorrosion tube plate 130 for heating and concentrating the sulfuric acid, and the anticorrosion tube plate 130 is arranged on the anticorrosion evaporator shell 110 and is fixed by the fixing structure 150.
In this embodiment, the anticorrosive evaporator housing 110 is an anticorrosive housing with high strength, and may be an anticorrosive housing. Preferably, the corrosion resistant evaporator housing 110 comprises an inner housing and an outer housing, the outer housing being a steel lined housing, the inner housing being a tetrafluoro housing, preferably, a tetrafluoro material is sprayed onto the inner surface of the steel lined housing to form a tetrafluoro housing; the inner shell can also be a glass lined shell.
In this embodiment, the anti-corrosion evaporator housing 110 is horizontally disposed, the anti-corrosion evaporator housing 110 is provided with a steam outlet 111, a dilute sulfuric acid inlet 112 and a concentrated sulfuric acid outlet 113, the steam outlet 111 is located at the upper end of the anti-corrosion evaporator housing 110, the concentrated sulfuric acid outlet 113 is located at the lower end of the anti-corrosion evaporator housing 110, and the dilute sulfuric acid inlet 112 is located between the steam outlet 111 and the concentrated sulfuric acid outlet 113. That is, when the dilute sulfuric acid is heated and concentrated, water in the dilute sulfuric acid is heated and evaporated into steam, which is discharged from the steam outlet 111, thereby increasing the concentration of sulfuric acid in the corrosion-resistant evaporator housing 110, and concentrating the sulfuric acid. The dilute sulfuric acid inlet 112 is arranged in the middle of the anti-corrosion evaporator shell 110, after dilute sulfuric acid enters the anti-corrosion evaporator shell 110, the dilute sulfuric acid downwards flows onto the surface of the silicon carbide heating sleeve 120 which is arranged in the anti-corrosion evaporator shell 110 in a contact manner, better evaporation concentration is performed, so that the concentration effect of sulfuric acid is better, the concentrated sulfuric acid outlet 113 is arranged at the lower end of the anti-corrosion evaporator shell 110, the dilute sulfuric acid is small after being concentrated, the dilute concentrated sulfuric acid outlet 113 is arranged at the lower end, and the concentrated sulfuric acid conveniently flows out from the concentrated sulfuric acid outlet 113, so that the sulfuric acid is collected.
In this embodiment, the cross section of the anticorrosion evaporator housing 110 is annular, that is, the anticorrosion evaporator housing 110 is a cylindrical structure that is horizontally arranged, the anticorrosion evaporator housing 110 has a first end 114 and a second end 115 along the length direction of the anticorrosion evaporator housing 110, that is, when the evaporator 100 for sulfuric acid concentration is horizontally arranged, the anticorrosion evaporator housing 110 is horizontally arranged, that is, the left and right ends of the anticorrosion evaporator housing 110 are respectively a first end 114 and a second end 115, the dilute sulfuric acid inlet 112 is close to the first end 114, the concentrated sulfuric acid outlet 113 is far away from the first end 114, sulfuric acid flows along the direction from the first end 114 to the second end 115, and the dilute sulfuric acid is heated and concentrated in the flowing process by a silicon carbide heating sleeve 120 installed in the anticorrosion evaporator housing 110.
A plurality of anti-corrosion baffles 160 are installed in the anti-corrosion evaporator shell 110, and the plurality of anti-corrosion baffles 160 are sequentially arranged at the lower end of the anti-corrosion evaporator shell 110 at intervals along the direction from the first end 114 to the second end 115. By installing the anti-corrosion baffle 160, the backflow mixing phenomenon of sulfuric acid can be eliminated, and the concentrated sulfuric acid is prevented from flowing back, so that the concentrated sulfuric acid and unconcentrated sulfuric acid are mixed, the average temperature difference between the sulfuric acid and steam is maintained at the maximum value, the concentration effect is better, and the heating area of the silicon carbide heating sleeve 120 is concentrated to the minimum after a period of concentration.
Fig. 2 is a schematic view showing the installation structure of a baffle plate in the evaporator 100 for sulfuric acid concentration according to the present embodiment. Referring to fig. 1 and 2, in the present embodiment, the anti-corrosion baffle 160 has a semicircular plate structure, and is conveniently disposed at the lower end of the anti-corrosion evaporator housing 110, and stably mounted with the anti-corrosion evaporator housing 110, so as to avoid the backflow phenomenon of sulfuric acid. Each corrosion-resistant baffle 160 is provided with a mounting hole for mounting each silicon carbide heating sleeve 120 and a notch 161 for sulfuric acid circulation, namely, the silicon carbide heating sleeve 120 is horizontally arranged in the corrosion-resistant evaporator shell 110 and penetrates through each corrosion-resistant baffle 160, the notches 161 of two adjacent corrosion-resistant baffles 160 are arranged in a staggered manner, an arrow method in the figure is the flowing direction of sulfuric acid, so that the sulfuric acid flows in the S-shaped flowing direction in the corrosion-resistant evaporator shell 110, the contact time and the contact area of the sulfuric acid and the silicon carbide heating sleeve 120 are increased, and the concentration effect is better.
In the present embodiment, the anti-corrosion baffle 160 is a polytetrafluoroethylene baffle, but is not limited to a baffle made of such a material, and can be made of an anti-corrosion material.
In this embodiment, the corrosion prevention tube plate 130 is disposed on the corrosion prevention evaporator housing 110, that is, the first end 114 is provided with the corrosion prevention tube plate 130, and each silicon carbide heating jacket 120 is disposed on the corrosion prevention tube plate 130 and located in the corrosion prevention evaporator housing 110. By the arrangement of the corrosion prevention tube sheet 130, the silicon carbide heating jacket 120 can be installed, and the corrosion prevention tube sheet 130 is installed on the corrosion prevention evaporator housing 110 by the fixing structure 150.
The corrosion-resistant tube plate 130 is a polytetrafluoroethylene tube plate or a steel lined polytetrafluoroethylene tube plate; but not limited to, both materials, tube sheets of materials that are capable of corrosion protection.
The fixing structure 150 includes a first flange and a second flange, which are both disposed on the anti-corrosion evaporator housing 110 and located on both sides of the anti-corrosion tube plate 130, and the anti-corrosion tube plate 130 is fixed on the anti-corrosion evaporator housing 110 through the fixing structure 150 by installing bolts on the first flange and the second flange and fixing with screws.
Preferably, the fixing structure 150 further includes a first gasket and a second gasket, the first gasket is disposed between the corrosion-preventing tube plate 130 and the first flange, and the second gasket is disposed between the corrosion-preventing tube plate 130 and the second flange. The anti-corrosion tube plate 130 is firmly connected with the anti-corrosion evaporator shell 110, and the anti-corrosion evaporator shell 110 has good sealing performance, and sulfuric acid cannot flow out from a gap between the anti-corrosion tube plate 130 and the anti-corrosion evaporator shell 110, so that the safety usability of equipment is improved.
The silicon carbide heating sleeves 120 are provided with a plurality of silicon carbide heating sleeves 120, each silicon carbide heating sleeve 120 is horizontally arranged, and the plurality of silicon carbide heating sleeves are staggered and layered together, and fig. 3 is a schematic structural diagram of the silicon carbide heating sleeves 120 in the evaporator 100 for sulfuric acid concentration provided in this embodiment. Referring to fig. 1 and 3 together, in the present embodiment, each silicon carbide heating sleeve 120 includes a silicon carbide sleeve 121, an electric heating wire 122 and an electric heating wire connecting element 123, the silicon carbide sleeve 121 is disposed in an anti-corrosion tube plate 130, the electric heating wire 122 is disposed in the silicon carbide sleeve 121, and the electric heating wire connecting element 123 is connected to one end of the electric heating wire 122. The anticorrosive tube sheet 130 is vertically arranged, the anticorrosive tube sheet 130 is arranged at the first end 114 to divide the anticorrosive evaporator shell 110 into two parts, a part of the first space 116 with smaller space is used for accommodating the electric discharge heating wire electric connection element 123, a part of the second space 117 with larger space is used for accommodating sulfuric acid, and in order to prevent the electric discharge heating wire electric connection element 123 from being damaged by sulfuric acid, the anticorrosive tube sheet 130 and each silicon carbide heating sleeve 120 must have good tightness, so that sulfuric acid is prevented from leaking from the first space 116 to the second space 117.
Preferably, each silicon carbide heating sleeve 120 comprises a silicon carbide sleeve 121 and electric heating wires 122, and one electric heating wire connecting element 123 is used by the electric heating wires 122 of all the silicon carbide heating sleeves 120 to control whether each electric heating wire 122 is electrified or powered off, and the electric heating wire connecting elements 123 are installed, so that the temperature control and adjustment are more convenient, and the automatic control is suitable.
The silicon carbide heating sleeve 120 is used for heating and concentrating dilute sulfuric acid, has the characteristics of high heat conductivity, high strength, high temperature resistance, acid and alkali corrosion resistance, is suitable for environments such as high temperature, high pressure, strong acid and strong alkali, has good concentration effect when being used for the evaporator 100 for concentrating sulfuric acid, can prolong the service life of equipment and reduce the production cost.
In order to realize the tightness between the silicon carbide sleeve 121 and the corrosion-resistant tube plate 130, a plurality of sealing structures 140 are also arranged, and each silicon carbide heating sleeve 120 is arranged on the corrosion-resistant tube plate 130 through one sealing structure 140, so that the connection between the silicon carbide heating sleeve 120 and the corrosion-resistant tube plate 130 is firmer, namely the connection tightness between the silicon carbide sleeve 121 and the corrosion-resistant tube plate 130 is better, the leakage of sulfuric acid is avoided, and the use safety of equipment is improved; at the same time, the silicon carbide sleeve 121 is also prevented from vibrating under the flushing of sulfuric acid and steam.
Specifically, fig. 4 is a schematic structural diagram of a sealing structure 140 in the evaporator 100 for sulfuric acid concentration according to the present embodiment. Referring to fig. 1 and 4 together, in this embodiment, each sealing structure 140 includes a compression nut 141, an anti-corrosion gasket 142 and an anti-corrosion sealing ring 143, a through hole is formed in the anti-corrosion tube plate 130, the compression nut 141 is disposed in the through hole, the anti-corrosion gasket 142 is disposed between the compression nut 141 and the anti-corrosion tube plate 130, the silicon carbide heating sleeve 120 is disposed in the compression nut 141, and the anti-corrosion sealing ring 143 is disposed between the silicon carbide heating sleeve 120 and the compression nut 141. The chemical property of the silicon carbide is stable, and the silicon carbide cannot be corroded by sulfuric acid; the heat conductivity coefficient is high, the heat of the electric heating wire 122 in the silicon carbide sleeve 121 can be easily transferred out, and the sulfuric acid is heated and concentrated, so that the concentration efficiency is high; the thermal expansion coefficient is small, and the deformation can not occur under the action of the electric heating wire 122, so that the service life is prolonged; the wear resistance is good, and sulfuric acid can not damage and wear when flowing in the corrosion evaporator shell, and is not affected under severe working conditions. Therefore, the silicon carbide sleeve 121 can be used as a silicon carbide sleeve with good advantages.
Because silicon carbide material hardness is big, fragile, so seal structure 140's function is more important, it can not form the extrusion to silicon carbide sleeve pipe 121, so, set up anticorrosive gasket 142 between gland nut 141 and anticorrosive tube sheet 130, set up anticorrosive sealing washer 143 between silicon carbide heating sleeve pipe 120 and the gland nut 141, set up anticorrosive sealing washer 143 between silicon carbide sleeve pipe 121 and the gland nut 141, can have good sealed effect, simultaneously, anticorrosive gasket 142 and anticorrosive sealing washer 143 have certain elasticity, avoid causing the extrusion to silicon carbide sleeve pipe 121, let it be destroyed, increase silicon carbide sleeve pipe 121's life.
In this embodiment, one end of the silicon carbide sleeve 121 is closed, the other end is not closed, that is, one end of the silicon carbide sleeve 121 located at the corrosion-resistant tube plate 130 is not closed, so that the electric heating wire 122 is conveniently extended and connected with the electric heating wire connecting element 123, one end of the silicon carbide sleeve 121 far away from the corrosion-resistant tube plate 130 is closed, sulfuric acid is prevented from entering the silicon carbide sleeve 121, and the electric heating wire 122 is prevented from being damaged.
In this embodiment, the electric heating wire electric connection element 123 is mounted on one side of the compression nut 141 far away from the silicon carbide sleeve 121, which is convenient for installation, and controls the power on and off of the electric heating wire 122, and the installation of the electric heating wire electric connection element 123 makes the temperature control and adjustment more convenient, and is suitable for automatic control. At the same time, the electric heating wire connecting element 123 is prevented from being damaged.
In this embodiment, the anti-corrosion pad 142 may be made of various anti-corrosion materials, such as: polytetrafluoroethylene gaskets, modified polyethylene gaskets, reinforced polypropylene gaskets, polyvinyl chloride gaskets and the like. Likewise, the anti-corrosion seal 143 may be a seal made of various anti-corrosion materials, such as: fluororubber seal ring, perfluoroether seal ring, silicone rubber seal ring, etc.
The evaporator 100 for sulfuric acid concentration has lower material cost, greatly reduces equipment cost, and has simpler equipment manufacture because the heat source is electric power instead of high-temperature and high-pressure steam.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The evaporator for concentrating sulfuric acid is characterized by comprising an anti-corrosion evaporator shell, a plurality of silicon carbide heating sleeves and an anti-corrosion tube plate, wherein the anti-corrosion tube plate is arranged in the anti-corrosion evaporator shell, and each silicon carbide heating sleeve is arranged in the anti-corrosion tube plate and is positioned in the anti-corrosion evaporator shell; the evaporator for sulfuric acid concentration further comprises a plurality of sealing structures, wherein each silicon carbide heating sleeve is fixed on the corrosion-resistant tube plate through one sealing structure; each sealing structure comprises a compression nut, an anti-corrosion gasket and an anti-corrosion sealing ring, a through hole is formed in the anti-corrosion tube plate, the compression nut is arranged in the through hole, the anti-corrosion gasket is arranged between the compression nut and the anti-corrosion tube plate, the silicon carbide heating sleeve is arranged in the compression nut, and the anti-corrosion sealing ring is arranged between the silicon carbide heating sleeve and the compression nut; each silicon carbide heating sleeve comprises a silicon carbide sleeve, an electric heating wire and an electric heating wire connecting element, wherein the silicon carbide sleeve is arranged in the compression nut, the electric heating wire is arranged in the silicon carbide sleeve, and the electric heating wire connecting element is connected with one end of the electric heating wire; the evaporator for sulfuric acid concentration further comprises a fixing structure, wherein the fixing structure comprises a first flange and a second flange, and the first flange and the second flange are both arranged on the anti-corrosion evaporator shell and are positioned on two sides of the anti-corrosion tube plate; the fixing structure further comprises a first gasket and a second gasket, the first gasket is arranged between the anti-corrosion tube plate and the first flange, and the second gasket is arranged between the anti-corrosion tube plate and the second flange; the anti-corrosion evaporator shell and the silicon carbide heating sleeve are horizontally arranged, the anti-corrosion evaporator shell is provided with a steam outlet, a dilute sulfuric acid inlet and a concentrated sulfuric acid outlet, the steam outlet is positioned at the upper end of the anti-corrosion evaporator shell, the concentrated sulfuric acid outlet is positioned at the lower end of the anti-corrosion evaporator shell, and the dilute sulfuric acid inlet is positioned between the steam outlet and the concentrated sulfuric acid outlet; the evaporator shell is provided with a first end and a second end along the length direction of the evaporator shell, the first end is provided with the corrosion-resistant tube plate, the dilute sulfuric acid inlet is close to the first end, and the concentrated sulfuric acid outlet is far away from the first end; the evaporator for sulfuric acid concentration further comprises a plurality of anti-corrosion baffle plates, and the anti-corrosion baffle plates are sequentially arranged at the lower end of the anti-corrosion evaporator shell at intervals along the direction from the first end to the second end; each baffle plate is provided with a mounting hole for mounting each silicon carbide heating sleeve and a notch for sulfuric acid circulation, and two adjacent anti-corrosion baffle plates are arranged in a staggered manner.
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| CN109692490A (en) * | 2019-01-28 | 2019-04-30 | 何文旭 | Corrosion-resistant falling film evaporator, dilute sulfuric acid concentration systems and its technique and application |
| CN113321191B (en) * | 2020-02-28 | 2024-04-16 | 博特化工装置股份公司 | Sulfuric acid concentration equipment |
| CN111961883A (en) * | 2020-10-10 | 2020-11-20 | 遵义钛业股份有限公司 | Heating passageway for distillation production of titanium sponge by combined method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017530133A (en) * | 2014-09-29 | 2017-10-12 | イネオス ユーロープ アクチェンゲゼルシャフト | An evaporation system with a series of evaporators for treating an ammoxidation process stream |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3474866B2 (en) * | 2000-05-12 | 2003-12-08 | 日本ペイント株式会社 | Method of hydrophilizing heat exchanger and heat exchanger hydrophilized |
| CN2591022Y (en) * | 2002-12-27 | 2003-12-10 | 西研稀有金属新材料股份有限公司 | Sulphuricacid evaporator |
| CN101352803A (en) * | 2008-09-10 | 2009-01-28 | 西部金属材料股份有限公司 | Method for installing sulfuric acid evaporator tantalum material heating tube nest |
| CN202193615U (en) * | 2011-08-08 | 2012-04-18 | 常州化工设备有限公司 | Dilute sulfuric acid concentration processing equipment |
| CN202297123U (en) * | 2011-10-13 | 2012-07-04 | 上海奥格利环保工程有限公司 | SO3 flue evaporator for sulfuric acid system |
| CN202400846U (en) * | 2011-12-05 | 2012-08-29 | 韩扶军 | Waste sulfuric acid concentrating and recovering plant |
| CN204705239U (en) * | 2015-05-27 | 2015-10-14 | 江阴市森博特种换热设备有限公司 | Corrosion-resistant carborundum tubular heat exchanger |
-
2017
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2017530133A (en) * | 2014-09-29 | 2017-10-12 | イネオス ユーロープ アクチェンゲゼルシャフト | An evaporation system with a series of evaporators for treating an ammoxidation process stream |
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| Publication number | Publication date |
|---|---|
| CN107963616A (en) | 2018-04-27 |
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