CN111217343A - Distillation treatment method for preparing concentrated nitric acid - Google Patents
Distillation treatment method for preparing concentrated nitric acid Download PDFInfo
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- CN111217343A CN111217343A CN202010098996.XA CN202010098996A CN111217343A CN 111217343 A CN111217343 A CN 111217343A CN 202010098996 A CN202010098996 A CN 202010098996A CN 111217343 A CN111217343 A CN 111217343A
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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
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
- C01B21/38—Nitric acid
- C01B21/46—Purification; Separation ; Stabilisation
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Abstract
The invention relates to a distillation treatment method for preparing concentrated nitric acid, which adopts distillation treatment equipment comprising a base heating device, a wrapping heating device and a clamping and rotating device; the upper end face of the base heating device is provided with a wrapping heating device, and the upper side of the wrapping heating device is provided with a clamping and rotating device. The invention can solve the problems that the existing distillation treatment method for preparing concentrated nitric acid lacks a fixed flask device, the flask is easy to topple and splash during the processing treatment process, and potential safety hazards exist, and the existing distillation treatment method for preparing concentrated nitric acid adopts a bottom heating mode, has low heating speed and uneven heating, can not adjust the heating temperature, has low flexibility in use of equipment, is not beneficial to improving the heating rate because the liquid is in a static state during heating, and the like.
Description
Technical Field
The invention relates to the field of chemical processing, in particular to a distillation treatment method for preparing concentrated nitric acid.
Background
The concentrated nitric acid has a molecular formula of HNO3, is colorless and liquid with pungent smell, has a density of about 1.4g/cm3 and a boiling point of 83 ℃, is volatile, corrosive and toxic, and needs to be worn on gloves and masks when in use.
At present, the existing concentrated nitric acid preparation distillation treatment generally has the following defects: 1. the existing distillation treatment method for preparing concentrated nitric acid lacks a device for fixing a flask, the flask is easy to topple and splash in the processing treatment process, and potential safety hazards exist; 2. the existing distillation treatment method for preparing concentrated nitric acid adopts a bottom heating mode, so that the heating speed is low, the heating is not uniform, the heating temperature cannot be adjusted, the flexibility of the equipment is low, and the liquid is in a static state during heating, which is not beneficial to improving the heating rate.
Disclosure of Invention
Technical problem to be solved
The invention can solve the problems that the existing distillation treatment method for preparing concentrated nitric acid lacks a fixed flask device, the flask is easy to topple and splash during the processing treatment process, and potential safety hazards exist, and the existing distillation treatment method for preparing concentrated nitric acid adopts a bottom heating mode, has low heating speed and uneven heating, can not adjust the heating temperature, has low flexibility in use of equipment, is not beneficial to improving the heating rate because the liquid is in a static state during heating, and the like.
(II) technical scheme
In order to achieve the above object, the present invention adopts the following technical scheme that a distillation treatment method for preparing concentrated nitric acid adopts distillation treatment equipment, wherein the distillation treatment equipment comprises a base heating device, a wrapping heating device and a clamping rotating device; the upper end face of the base heating device is provided with a wrapping heating device, and the upper side of the wrapping heating device is provided with a clamping and rotating device.
The base heating device comprises a bottom plate, buffer springs, a supporting plate, sliding rods, sliding blocks, locking screws, a heating ring and a heat insulation plate, wherein the sliding rods are symmetrically arranged on the left side and the right side of the upper end surface of the bottom plate, the buffer springs are arranged on the sliding rods, the supporting plate is arranged at the upper end of the buffer springs and is connected with the sliding rods in a sliding fit manner, the sliding blocks are arranged on the upper side of the supporting plate in a sliding fit manner, the heat insulation plate is arranged between the sliding blocks, the heat insulation plate is of a U-shaped structure, the heating ring is arranged in the middle of the heat insulation plate; according to the required heating temperature, the sliding block is manually moved up and down along the sliding rod to be placed at a proper position, and the heating ring is fixed at the required position by using the locking screw.
The parcel heating device comprises a fixing frame, a bearing block, an asbestos screen, a sliding limiting rod, an electric slider, a parcel supporting block, a bayonet mechanism and a parcel heating mechanism, wherein the fixing frame is installed on the upper end face of the sliding rod, the bearing blocks are symmetrically installed on the lower sides of the left inner end face and the right inner end face of the fixing frame, the asbestos screen is installed between the bearing blocks, a square groove is formed in the upper end face of each bearing block, the sliding limiting rod is installed in the square groove, the electric slider is installed on the sliding limiting rod, the parcel supporting block is installed on the right end face of the electric slider, the bayonet mechanism is installed on the upper side of the parcel supporting block, the inner end of the parcel supporting block is; the flask that will need heat treatment is placed on the asbestos net, drives the parcel supporting shoe through electronic slider, utilizes parcel heating mechanism to live the flask parcel, fixes the locking of flask bottleneck department through bayonet socket mechanism.
The clamping and rotating device comprises a top plate, an electric turntable, a hydraulic rod, a clamping block, an electric telescopic rod, an arc plate and a rubber layer, wherein the top plate is arranged on the upper side of the inner end surface of the fixed frame, the electric turntable is arranged on the lower end surface of the top plate, the hydraulic rod is symmetrically arranged on the movable end of the electric turntable, the clamping block is arranged on the movable end of the hydraulic rod, a through hole is formed in the middle of the clamping block, the electric telescopic rod is symmetrically arranged in the through hole left and right, the arc plate is arranged on the movable end of the electric telescopic rod; drive grip block downstream through the hydraulic stem, drive the arc inwards movement through electric telescopic handle, make the rubber layer compress tightly the bottleneck, start electric turntable, reach the purpose at the uniform velocity rotatory with the flask.
The distillation treatment method for preparing concentrated nitric acid comprises the following steps:
s1, adjusting the heating distance: manually moving the sliding block up and down along the sliding rod to a proper position according to the required heating temperature, and fixing the heating ring to the required position by using a locking screw;
s2, pack fixed flask: placing a flask to be heated on an asbestos net, driving a wrapping supporting block through an electric sliding block, and wrapping the flask by using a wrapping heating mechanism;
s3, clamping and locking a bottle neck: the bottleneck position of the flask is locked and fixed through a bayonet mechanism;
s4, homogeneous rotary flask: the clamping block is driven to move downwards through the hydraulic rod, the arc-shaped plate is driven to move inwards through the electric telescopic rod, the rubber layer is enabled to compress a bottleneck, the electric rotary table is started, and the purpose of rotating the flask at a constant speed is achieved;
s5, flask removal: after completion of the distillation, the apparatus was reset, and the flask was taken out.
Preferably, the bayonet mechanism comprises an electric pressure rod, a locking block, balls, a bolt block and a bolt hole, a rectangular groove is formed in the upper side of the wrapping supporting block, the electric pressure rod is installed in the rectangular groove, the locking block is installed on the movable end of the electric pressure rod, an arc-shaped groove is formed in the inner side face of the locking block, the balls are uniformly arranged on the arc-shaped groove in a sliding fit mode, the bolt block is symmetrically arranged in the front of and behind the locking block, and the bolt hole is formed in the bolt block; the locking blocks are driven to move outwards through the electric pressure rod, the locking blocks are tightly locked left and right, the locking blocks are locked left and right through the bolt holes through bolts, and the balls are evenly attached to the bottle neck tightly.
Preferably, the wrapping heating mechanism comprises a wrapping spring, a wrapping sliding plate, a wrapping connecting plate, a wrapping head and a micro heating ring, wherein round holes are uniformly formed in the wrapping supporting block, the wrapping sliding plate is installed in the round holes in a sliding fit mode, the wrapping spring is directly installed on the wrapping sliding plate and the wrapping supporting block, the wrapping connecting plate is installed on the outer end face of the wrapping sliding plate, the wrapping head is installed on the outer end face of the wrapping connecting plate, and the micro heating ring is installed in the wrapping head; through the cooperation of parcel spring and parcel head, reach the flask that the parcel head can adapt to different shapes to reach the purpose of evenly heating the solution from all around.
Preferably, the wrapping support block is of a semicircular structure.
Preferably, the diameter of the arc-shaped plate is consistent with that of the bottle neck.
Preferably, the wrapping head is in a trapezoidal structure.
(III) advantageous effects
1. According to the distillation treatment method for preparing concentrated nitric acid, the flask is fixed by the package clamping position through the matching of the package heating mechanism and the bayonet mechanism, compared with a traditional heating mode, the flask is not prone to toppling and splashing in the processing treatment process, and potential safety hazards are eliminated;
2. according to the distillation treatment method for preparing concentrated nitric acid, the sliding block is manually moved up and down along the sliding rod to be placed at a proper position, the purpose of adjusting the heating temperature is achieved, the use flexibility of the equipment is improved, the heating speed is improved by wrapping the heating device, the arc-shaped plate is matched with the electric turntable, liquid is in a stirring state during heating, and the heating speed is further improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the construction of the clamping block of the present invention;
FIG. 4 is a cross-sectional view of a clamp block of the present invention;
FIG. 5 is a cross-sectional view of a bayonet mechanism of the present invention;
FIG. 6 is an enlarged view of a portion I of FIG. 1 according to the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 6, a distillation treatment method for preparing concentrated nitric acid, which employs a distillation treatment apparatus including a base heating device 1, a wrapping heating device 2, and a holding rotating device 3; the upper end face of the base heating device 1 is provided with a wrapping heating device 2, and the upper side of the wrapping heating device 2 is provided with a clamping and rotating device 3.
The base heating device 1 comprises a bottom plate 11, buffer springs 12, a support plate 13, sliding rods 14, sliding blocks 15, locking screws 16, a heating ring 17 and a heat insulation plate 18, wherein the sliding rods 14 are symmetrically arranged on the upper end surface of the bottom plate 11 from left to right, the buffer springs 12 are arranged on the sliding rods 14, the support plate 13 is arranged at the upper end of the buffer springs 12, the support plate 13 is connected with the sliding rods 14 in a sliding fit manner, the sliding blocks 15 are arranged on the upper side of the support plate 13 in a sliding fit manner, the heat insulation plate 18 is arranged between the sliding blocks 15, the heat insulation plate 18 is in a U-shaped structure, the heating ring 17 is arranged in the middle of the heat insulation plate 18, and the locking screws; according to the required heating temperature, the sliding block 15 is manually moved up and down along the sliding rod 14 to a proper position, and the heating ring 17 is fixed at the required position by using the locking screw 16.
The parcel heating device 2 comprises a fixing frame 21, a supporting block 22, an asbestos wire net 23, a sliding limiting rod 24, an electric slider 25, parcel supporting blocks 26, a bayonet mechanism 27 and a parcel heating mechanism 28, wherein the fixing frame 21 is installed on the upper end face of the sliding rod 14, the supporting blocks 22 are symmetrically installed on the lower sides of the left inner end face and the right inner end face of the fixing frame 21, the asbestos wire net 23 is installed between the supporting blocks 22, a square groove is formed in the upper end face of the supporting block 22, the sliding limiting rod 24 is installed in the square groove, the electric slider 25 is installed on the sliding limiting rod 24, the parcel supporting block 26 is installed on the right end face of the electric slider 25, the parcel supporting block 26 is of a semicircular structure, the bayonet mechanism 27 is installed on the upper side of the parcel supporting block 26, the inner end face of; the flask needing heating treatment is placed on the asbestos net 23, the electric slider 25 drives the wrapping supporting block 26, the flask is wrapped by the wrapping heating mechanism 28, and the bottleneck of the flask is locked and fixed through the bayonet mechanism 27.
The clamping and rotating device 3 comprises a top plate 31, an electric rotating disc 32, a hydraulic rod 33, a clamping block 34, an electric telescopic rod 35, an arc-shaped plate 36 and a rubber layer 37, wherein the top plate 31 is installed on the upper side of the inner end face of the fixed frame 21, the electric rotating disc 32 is installed on the lower end face of the top plate 31, the hydraulic rod 33 is symmetrically installed on the movable end of the electric rotating disc 32, the clamping block 34 is installed on the movable end of the hydraulic rod 33, a through hole is formed in the middle of the clamping block 34, the electric telescopic rods 35 are symmetrically installed in the through hole in the left and right directions, the arc-shaped plate 36 is installed on the movable end of the electric telescopic rod 35; the clamping block 34 is driven to move downwards through the hydraulic rod 33, the arc-shaped plate 36 is driven to move inwards through the electric telescopic rod 35, the rubber layer 37 is enabled to compress the bottle neck, the electric turntable 32 is started, and the purpose of enabling the flask to rotate at a constant speed is achieved.
The bayonet mechanism 27 comprises an electric pressure rod 271, a locking block 272, balls 273, a bolt block 274 and a bolt hole 275, a rectangular groove is formed in the upper side of the wrapping support block 26, the electric pressure rod 271 is installed in the rectangular groove, the locking block 272 is installed on the movable end of the electric pressure rod 271, an arc-shaped groove is formed in the inner side face of the locking block 272, the balls 273 are uniformly arranged on the arc-shaped groove in a sliding fit mode, the bolt blocks 274 are symmetrically arranged in the front and at the back of the locking block 272, and the bolt hole 275 is formed in the bolt block 274; the locking blocks 272 are driven by the electric pressure rod 271 to move outwards, the locking blocks 272 are tightly closed, the locking blocks 272 are locked by bolts through the bolt holes 275, and the balls 273 are uniformly attached to the bottleneck.
The wrapping heating mechanism 28 comprises a wrapping spring 281, a wrapping sliding plate 282, a wrapping connecting plate 283, a wrapping head 284 and a micro heating ring 285, wherein round holes are uniformly formed in the wrapping supporting block 26, the wrapping sliding plate 282 is installed in the round holes in a sliding fit mode, the wrapping spring 281 is directly installed on the wrapping sliding plate 282 and the wrapping supporting block 26, the wrapping connecting plate 283 is installed on the outer end face of the wrapping sliding plate 282, the wrapping head 284 is installed on the outer end face of the wrapping connecting plate 283, the wrapping head 284 is of a trapezoidal structure, and the micro heating ring 285 is installed in the wrapping head 284; by matching the wrapping spring 281 with the wrapping head 284, the wrapping head 284 can adapt to flasks in different shapes, and the purpose of uniformly heating the solution from the periphery is achieved.
The distillation treatment method for preparing concentrated nitric acid comprises the following steps:
s1, adjusting the heating distance: manually moving the sliding block 15 up and down along the sliding rod 14 to a proper position according to the required heating temperature, and fixing the heating ring 17 at the required position by using a locking screw 16;
s2, pack fixed flask: placing a flask to be heated on the asbestos net 23, driving a wrapping supporting block 26 through an electric sliding block 25, and wrapping the flask by using a wrapping heating mechanism 28;
s3, clamping and locking a bottle neck: the bottleneck position of the flask is locked and fixed through a bayonet mechanism 27;
s4, homogeneous rotary flask: the clamping block 34 is driven by the hydraulic rod 33 to move downwards, the arc-shaped plate 36 is driven by the electric telescopic rod 35 to move inwards, the rubber layer 37 is enabled to compress the bottle neck, the electric turntable 32 is started, and the purpose of rotating the flask at a constant speed is achieved;
s5, flask removal: after completion of the distillation, the apparatus was reset, and the flask was taken out.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A distillation treatment method for preparing concentrated nitric acid adopts distillation treatment equipment which comprises a base heating device (1), a wrapping heating device (2) and a clamping and rotating device (3); the method is characterized in that: a wrapping heating device (2) is arranged on the upper end surface of the base heating device (1), and a clamping rotating device (3) is arranged on the upper side of the wrapping heating device (2);
the base heating device (1) comprises a bottom plate (11), a buffer spring (12), a supporting plate (13), a sliding rod (14), a sliding block (15), a locking screw (16), a heating ring (17) and a heat insulation plate (18), sliding rods (14) are symmetrically arranged on the left side and the right side of the upper end face of the bottom plate (11), buffer springs (12) are arranged on the sliding rods (14), supporting plates (13) are arranged at the upper ends of the buffer springs (12), the supporting plates (13) are connected with the sliding rods (14) in a sliding fit mode, sliding blocks (15) are arranged on the upper sides of the supporting plates (13) in a sliding fit mode, heat insulation plates (18) are arranged between the sliding blocks (15), the heat insulation plates (18) are of U-shaped structures, heating rings (17) are arranged in the middle of the heat insulation plates (18), and locking screws (16) are arranged on the left sides of the sliding blocks (;
the package heating device (2) comprises a fixing frame (21), bearing blocks (22), asbestos meshes (23), sliding limiting rods (24), electric sliding blocks (25), package supporting blocks (26), a bayonet mechanism (27) and a package heating mechanism (28), wherein the fixing frame (21) is installed on the upper end face of the sliding rod (14), the bearing blocks (22) are symmetrically installed on the lower sides of the left inner end face and the right inner end face of the fixing frame (21), the asbestos meshes (23) are installed between the bearing blocks (22), a square groove is formed in the upper end face of each bearing block (22), the sliding limiting rods (24) are installed in the square groove, the electric sliding blocks (25) are installed on the sliding limiting rods (24), the package supporting blocks (26) are installed on the right end face of each electric sliding block (25), the bayonet mechanism (27) is installed on the upper sides of the package supporting blocks (26), and the inner ends of the package, wrapping heating mechanisms (28) are uniformly arranged in the arc-shaped structure;
the clamping and rotating device (3) comprises a top plate (31), an electric rotating disc (32), a hydraulic rod (33), a clamping block (34), an electric telescopic rod (35), an arc-shaped plate (36) and a rubber layer (37), wherein the top plate (31) is installed on the upper side of the inner end face of the fixed frame (21), the electric rotating disc (32) is installed on the lower end face of the top plate (31), the hydraulic rod (33) is symmetrically installed on the movable end of the electric rotating disc (32), the clamping block (34) is installed on the movable end of the hydraulic rod (33), a through hole is formed in the middle of the clamping block (34), the electric telescopic rod (35) is symmetrically installed in the through hole left and right, the arc-shaped plate (36) is installed on the movable end of the electric telescopic rod;
the distillation treatment method for preparing concentrated nitric acid comprises the following steps:
s1, adjusting the heating distance: according to the required heating temperature, the sliding block (15) is manually moved up and down along the sliding rod (14) to be placed at a proper position, and the heating ring (17) is fixed at the required position by using a locking screw (16);
s2, pack fixed flask: placing a flask to be heated on an asbestos net (23), driving a wrapping supporting block (26) through an electric sliding block (25), and wrapping the flask by using a wrapping heating mechanism (28);
s3, clamping and locking a bottle neck: the bottleneck position of the flask is locked and fixed through a bayonet mechanism (27);
s4, homogeneous rotary flask: the clamping block (34) is driven to move downwards by the hydraulic rod (33), the arc-shaped plate (36) is driven to move inwards by the electric telescopic rod (35), the rubber layer (37) is enabled to compress a bottleneck, the electric turntable (32) is started, and the purpose of enabling the flask to rotate at a constant speed is achieved;
s5, flask removal: after completion of the distillation, the apparatus was reset, and the flask was taken out.
2. The distillation treatment method for preparing concentrated nitric acid according to claim 1, wherein the distillation treatment method comprises the following steps: the bayonet mechanism (27) comprises an electric pressure rod (271), a locking block (272), balls (273), a bolt block (274) and bolt holes (275), a rectangular groove is formed in the upper side of the wrapping supporting block (26), the electric pressure rod (271) is installed in the rectangular groove, the locking block (272) is installed on the movable end of the electric pressure rod (271), an arc-shaped groove is formed in the inner side face of the locking block (272), the balls (273) are evenly arranged on the arc-shaped groove in a sliding fit mode, the bolt blocks (274) are symmetrically arranged in the front and back of the locking block (272), and the bolt holes (275) are formed in the bolt block (274).
3. The distillation treatment method for preparing concentrated nitric acid according to claim 1, wherein the distillation treatment method comprises the following steps: the parcel heating mechanism (28) include parcel spring (281), parcel sliding plate (282), parcel connecting plate (283), parcel head (284) and miniature heating ring (285), parcel supporting shoe (26) on evenly be provided with the round hole, install parcel sliding plate (282) through sliding fit's mode in the round hole, parcel sliding plate (282) and parcel supporting shoe (26) direct mount have parcel spring (281), install parcel connecting plate (283) on the outer terminal surface of parcel sliding plate (282), install parcel head (284) on the outer terminal surface of parcel connecting plate (283), install miniature heating ring (285) in parcel head (284).
4. The distillation treatment method for preparing concentrated nitric acid according to claim 1, wherein the distillation treatment method comprises the following steps: the wrapping supporting block (26) is of a semicircular structure.
5. The distillation treatment method for preparing concentrated nitric acid according to claim 1, wherein the distillation treatment method comprises the following steps: the diameter of the arc-shaped plate (36) is consistent with that of the bottle neck.
6. The municipal sewage treatment method according to claim 3, wherein: the wrapping head (284) is in a trapezoidal structure.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113640455A (en) * | 2021-08-06 | 2021-11-12 | 江苏省纺织产品质量监督检验研究院 | Reaction device for textile detection |
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