CN109966769B - Butanediol low-temperature water removal equipment and use method thereof - Google Patents
Butanediol low-temperature water removal equipment and use method thereof Download PDFInfo
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- CN109966769B CN109966769B CN201910281967.4A CN201910281967A CN109966769B CN 109966769 B CN109966769 B CN 109966769B CN 201910281967 A CN201910281967 A CN 201910281967A CN 109966769 B CN109966769 B CN 109966769B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/10—Vacuum distillation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/30—Fractionating columns with movable parts or in which centrifugal movement is caused
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
- C07C31/20—Dihydroxylic alcohols
- C07C31/207—1,4-Butanediol; 1,3-Butanediol; 1,2-Butanediol; 2,3-Butanediol
Abstract
The invention relates to butanediol low-temperature dewatering equipment and a using method thereof, belonging to the technical field of butanediol processing, wherein the equipment comprises a distillation kettle and a sealing cover for sealing the distillation kettle, a heating pipe is communicated in the distillation kettle, the side wall of the distillation kettle is a double-layer structure consisting of an inner wall and an outer wall, the double-layer structure is divided into a lower space and an upper space which are mutually independent, and the lower space and the upper space are both vacuum; the outer wall of the upper space is provided with a vacuum pump insertion opening, and the inner wall of the upper space is provided with a first one-way valve communicated with the accommodating cavity of the distillation kettle; the heating pipe is embedded in the distillation still, and the middle section of the heating pipe is positioned in the accommodating cavity of the distillation still. The method adopts a reduced pressure distillation mode to remove water from the inflammable butanediol, reduces the possibility of thermal oxidation and combustion of the butanediol, and improves the production safety.
Description
Technical Field
The invention relates to the technical field of butanediol processing, in particular to butanediol low-temperature water removal equipment and a using method thereof.
Background
Butanediol is also called 1, 3-butanediol, has the characteristics of reactivity of dihydric alcohol, no odor, low toxicity, good water solubility and the like, is mainly used for organic synthesis, and is a raw material of polyester resin and alkyd resin, a raw material of plasticizer, a raw material of polyurethane coating, wetting agent and softening agent, intermediates of medicines and dyes, surfactant, plasticizer, hygroscopic agent (humectant), coupling agent, solvent, food additive and flavoring agent.
Butanediol is soluble in water, acetone, methyl/ethyl (methyl) ketone, ethanol, dibutyl phthalate, castor oil, and is almost insoluble in aliphatic hydrocarbons, benzene, toluene, carbon tetrachloride, ethanolamines, mineral oil, and linseed oil. Because its boiling point is higher, easily receive air oxidation during the distillation under the ordinary pressure, in order to overcome this problem, distill under the decompression condition usually, current distillation plant adopts large-scale jar body cooperation relevant controlgear usually to go on, but can face following problem: 1. the large tank body has large surface area, high integrity maintaining difficulty and high pressure maintaining difficulty, and is particularly used in the process of relevant operation and after long-term use; 2. the operation decompression program is not matched with the operation sealing program, so that the working efficiency is low; 3. the existing reduced pressure distillation program control system is complex, more matched equipment is needed, the use cost is high, and the maintenance difficulty is high; 4. the distillation process is not easy to observe and control in time, and the like.
In order to better solve the above problems, there is an urgent need for an apparatus and related distillation technology that is convenient to use, simple to operate and control, good in distillation effect, and low in process control difficulty.
Disclosure of Invention
1. Problems to be solved
Aiming at the problem of high difficulty in distillation control of large and medium tank bodies in the prior art, the invention provides butanediol low-temperature water removal equipment and a using method thereof.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A butanediol low-temperature dewatering device comprises a distillation kettle and a sealing cover for sealing the distillation kettle, wherein a heating pipe is communicated in the distillation kettle, the side wall of the distillation kettle is of a double-layer structure consisting of an inner wall and an outer wall, the double-layer structure is divided into a lower space and an upper space which are mutually independent, and the lower space and the upper space are both vacuum; the outer wall of the upper space is provided with a vacuum pump insertion opening, and the inner wall of the upper space is provided with a first one-way valve communicated with the accommodating cavity of the distillation kettle; the heating pipe is embedded in the distillation kettle, two ports of the heating pipe extend to the outside of the distillation kettle, and the middle section of the heating pipe is positioned in the accommodating cavity of the distillation kettle; the sealing cover comprises an annular frame, a limiting ring is arranged on the inner side wall of the frame, a net structure is arranged on the lower portion of the inner side of the frame, a breathable spacer is laid above the net structure, anhydrous copper sulfate is arranged on the breathable spacer, a transparent sealing layer is arranged above the sealing cover, and the sealing layer is supported by the limiting ring.
Preferably, the heating pipe is of a segmented structure, and a fluid director is arranged between every two segments of heating pipes; the fluid director comprises a rotary clamping ring which is clamped between the two heating pipes in a sealing manner, an inner blade and an outer blade are respectively arranged on the inner side surface and the outer side surface of the rotary clamping ring, the inner blade is positioned in a sealing space formed by the heating pipes and the rotary clamping ring, and the outer blade is positioned outside the sealing space.
Preferably, the flow directors are used in pairs, two oppositely arranged flow directors forming one convection device.
Preferably, a clamping cover is arranged on the heating pipe, and a through hole for the butanediol to pass through is formed in the clamping cover; the clamping covers respectively positioned on two adjacent heating pipes surround the fluid director positioned between the two heating pipes; the outer side wall of each clamping cover extends out to form a plurality of strip-shaped structures, the two clamping covers which are matched with each other are mutually inserted by utilizing the strip-shaped structures on the clamping covers, and the strip-shaped structures are sleeved with locking hoops in a thread matching mode.
Preferably, the clamping cover is movably sleeved on the corresponding heating pipe in a screwed connection mode.
Preferably, the lock hoop is total two, and laminates each other and form anti-skidding structure, all is equipped with anti-skidding rubber on the face of laminating each other of lock hoop, the face that anti-skidding rubber is used for the laminating is the mat surface.
Preferably, the side face of the clamping ring, which is in contact with the end part of the heating pipe, is provided with an annular groove, a U-shaped sealing ring is arranged in the groove, and the end part of the heating pipe is inserted into the annular groove on the corresponding side and is sealed by the U-shaped sealing ring.
Preferably, steam is introduced into the heating pipe, and the part of the heating pipe, which is positioned in the accommodating cavity of the distillation still, is arranged in a spiral surrounding manner; and a second one-way valve is arranged between the upper space and the lower space.
Preferably, an annular sealing groove is formed in an opening of the distillation kettle, the section of the annular sealing groove is V-shaped, and an annular sealing ring matched with the annular sealing groove is arranged on the sealing cover; the distillation still is characterized in that a plurality of negative pressure grooves are formed in the upper end face of the distillation still, an interlayer made of rubber materials is arranged at the bottom of each negative pressure groove, and the interlayer is located between the negative pressure grooves and the upper space.
A method for using butanediol low-temperature water removal equipment comprises the following steps:
s1, charging: pouring butanediol containing moisture into a containing cavity of the distillation kettle, keeping the liquid level line of the butanediol below the first one-way valve, and covering a sealing cover;
s2, sealing: the containing cavity is sealed by a sealing structure formed between the annular sealing ring and the annular sealing groove, and the interlayer is pulled down by the negative pressure state of the upper space, so that a negative pressure state is formed in the negative pressure groove, and the sealing cover is further sucked;
s3, vacuumizing: further vacuumizing the upper space and the accommodating cavity of the distillation kettle by using an external vacuum pump to reduce the boiling point of water in the butanediol;
s4, heating: introducing steam into the heating pipe by using an external steam pipeline to heat the butanediol, and heating the water in the butanediol to accelerate evaporation;
s5, stirring: the steam flows and pushes the inner blade to rotate, the inner blade drives the outer blade to rotate by utilizing the rotary clamping ring, the outer blade pushes the butanediol to flow, the heating uniformity of the butanediol is improved, further, the butanediol relative surging between the outer blades can be pushed by adopting a pair of outer blades which rotate relatively, and the mixed flow efficiency and effect are improved;
s6, monitoring: the water is mixed with anhydrous copper sulfate through the breathable spacer, the anhydrous copper sulfate is changed into blue-water copper sulfate when the anhydrous copper sulfate is in contact with water, and the distillation effect and progress can be known by observing the blue changing degree of the anhydrous copper sulfate through the transparent sealing layer;
s7, adjustment: the mode of embedding anhydrous copper sulfate powder in the breathable shock insulator can be used for opening the sealing layer midway to replace a new breathable shock insulator containing anhydrous copper sulfate, so that the moisture absorption effect of the breathable shock insulator is ensured, and the distillation condition is accurately known.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the method adopts a reduced pressure distillation mode to remove water from the inflammable butanediol, reduces the possibility of thermal oxidation and combustion of the butanediol, and improves the production safety.
(2) The invention adopts a vacuumizing mode to reduce the pressure of the distillation kettle, simultaneously pumps out oxygen, reduces the possibility of oxidation of butanediol, reduces the temperature requirement in the heating process and saves energy.
(3) According to the invention, the anhydrous copper sulfate for observing and detecting the distillation progress is arranged at the sealing cover, so that an operator can know the distillation condition and the water content condition in butanediol in time, and the anhydrous copper sulfate and the breathable spacer can be replaced by opening the transparent sealing layer, so that the breathable spacer and the anhydrous copper sulfate have good water absorption performance and detection performance.
(4) The vacuum sealing device adopts the negative pressure groove with the variable space volume to adsorb the sealing cover, improves the sealing performance of the sealing cover, avoids the damage of the vacuum environment in the containing cavity of the distillation kettle, and the negative pressure environment is generated in a vacuumizing procedure after the distillation starts, so that the manual independent sealing operation is not needed, the sealing action of the sealing cover is consistent with the distillation production action, the production automation degree is higher, the production efficiency is improved, and the manual operation burden is reduced.
(5) The invention utilizes the fluid director arranged between the heating pipes to stir the butanediol in the containing cavity, so that the butanediol is uniformly contacted with the heating pipes, wherein the action of the fluid director does not use a driving device and a transmission system which are independently arranged in the containing cavity, thereby saving the complex structure and strict sealing requirements of the driving device and the transmission system which are independently arranged in the containing cavity.
(6) The vacuum environment on the side wall part of the distillation kettle is divided into an upper space and a lower space by adopting a sectional vacuum structure, the upper space is simultaneously used as a channel for communicating the accommodating cavity and the vacuum pump and is used as a negative pressure groove pressure regulator to assist in being used as a space for isolating temperature transmission, and the function of adjusting the upper action flow and realizing the function is realized; the lower space is used as a vacuum barrier to isolate temperature transfer, and the heating efficiency of the butanediol is ensured.
Drawings
FIG. 1 is a side perspective view of the present invention;
FIG. 2 is a perspective view from another side of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 6 is an enlarged view of C in FIG. 5;
FIG. 7 is a perspective view of a fluid director of the present invention;
FIG. 8 is a schematic diagram showing the positional relationship among the rotary snap ring, the inner blade, and the outer blade according to the present invention.
In the figure:
1. a distillation kettle; 101. a lower space; 102. an upper space; 103. a vacuum pump insertion opening; 104. a first check valve; 105. a second one-way valve; 106. an annular seal groove; 107. a negative pressure tank; 108. an interlayer;
2. sealing the cover; 201. a frame; 202. a mesh structure; 203. a breathable spacer; 204. anhydrous copper sulfate; 205. a sealing layer; 206. an annular seal ring;
3. heating a tube; 301. a clamping cover; 302. a through hole; 303. a strip structure; 304. a locking band; 305. an annular groove;
4. a fluid director; 401. rotating the snap ring; 402. an inner blade; 403. and (4) outer blades.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
As shown in fig. 1 to 8, a butanediol low-temperature water removal device comprises a distillation still 1 and a sealing cover 2 for sealing the distillation still 1, wherein a heating pipe 3 for heating butanediol is introduced into the distillation still 1, the side wall of the distillation still 1 is a double-layer structure formed by an inner wall and an outer wall, the double-layer structure is divided into a lower space 101 and an upper space 102 which are independent from each other, and both the lower space 101 and the upper space 102 are vacuum, so as to realize the purpose of heat preservation of a containing cavity; a vacuum pump insertion opening 103 is formed in the outer wall of the upper space 102, a first one-way valve 104 communicated with an accommodating cavity of the distillation still 1 is formed in the inner wall of the upper space 102, an external vacuum pump pumps out air in the upper space 102, the air pressure in the accommodating cavity is reduced by using the first one-way valve 104, and the upper space 102 serves as a channel of the vacuum pump at the moment; the heating pipe 3 is embedded in the distillation kettle 1, two ports of the heating pipe 3 extend to the outside of the distillation kettle 1 so as to receive and discharge steam, the middle section of the heating pipe 3 is positioned in the accommodating cavity of the distillation kettle 1, and the butanediol is heated when the steam passes through the inside of the accommodating cavity; the sealing cover 2 comprises an annular frame 201, a limiting ring is arranged on the inner side wall of the frame 201, a net structure 202 is arranged on the lower portion of the inner side of the frame 201, a breathable spacer 203 is laid above the net structure 202, anhydrous copper sulfate 204 is arranged on the breathable spacer 203, a transparent sealing layer 205 is arranged above the sealing cover 2, the sealing layer 205 is supported by the limiting ring, when the sealing cover is used, water vapor is in contact with the anhydrous copper sulfate 204 through the breathable spacer 203, the anhydrous copper sulfate 204 is changed into blue, the distillation process and the water content can be known through observing the blue changing degree through the transparent sealing layer 205, furthermore, the anhydrous copper sulfate 204 is embedded in the breathable spacer 203 to prevent the anhydrous copper sulfate 204 from spilling out, a cavity structure is arranged in the breathable spacer 203, the cavity structure divides the breathable spacer 203 into a surface layer and a bottom layer, and the surface layer and the bottom layer are tightened through elastic connecting silk threads, and the space compactness is ensured.
The heating pipes 3 are of a segmented structure, and a fluid director 4 is arranged between every two segments of the heating pipes 3; the fluid director 4 is including the rotatory snap ring 401 of sealing card between two heating pipes 3, be equipped with inner blade 402 and outer blade 403 on rotatory snap ring 401's medial surface and the lateral surface respectively, inner blade 402 is located inside the sealed space that heating pipe 3 and rotatory snap ring 401 formed, outer blade 403 is located above-mentioned sealed space outside, and during the use, high-pressure steam passes through heating pipe 3 fast, and drive inner blade 402 rotates, and inner blade 402 is even as an organic whole with outer blade 403 with the help of rotatory snap ring 401, utilizes outer blade 403's rotation to promote the butanediol homogeneous flow, realizes the even heating to the butanediol.
A clamping cover 301 is arranged on the heating pipe 3, and a through hole 302 for the butanediol to pass through is arranged on the clamping cover 301; the clamping covers 301 respectively positioned on two adjacent heating pipes 3 surround the fluid director 4 positioned between the two heating pipes 3; the outer side wall of the clamping cover 301 extends to form a plurality of strip-shaped structures 303 extending along the axial direction of the fluid director 4, the two clamping covers 301 matched with each other are inserted into each other by utilizing the strip-shaped structures 303 on the clamping covers, a locking hoop 304 is sleeved on each strip-shaped structure 303 in a thread matching mode, the locking hoops 304 connect the clamping covers 301 on two sides into a whole, the two clamping covers 301 forming a rigid body structure connect the heating pipes 3 with free ends on two sides, the accurate positioning of the heating pipes 3 is guaranteed, and then the accurate sealing installation and the smooth work of the fluid director 4 are guaranteed.
All be equipped with annular groove 305 on the side that contacts with heating pipe 3 tip of snap ring, be equipped with U type sealing washer in the recess, the tip of heating pipe 3 inserts in the annular groove 305 of corresponding side to it is sealed by U type sealing washer.
Steam is led to the inside of heating pipe 3, and the part that heating pipe 3 is located retort 1's the intracavity that holds adopts the mode setting that the spiral encircles, and further, in order to guarantee the accurate installation of divertor 4, the free end that heating pipe 3 is used for with divertor 4 contact sets up to linear type structure, reduces heating pipe 3 and divertor 4 cooperation degree of difficulty.
An annular sealing groove 106 is formed in the opening of the distillation still 1, the section of the annular sealing groove 106 is V-shaped, and an annular sealing ring 206 matched with the annular sealing groove 106 is arranged on the sealing cover 2; a plurality of negative pressure grooves 107 are formed in the upper end face of the distillation kettle 1, an interlayer 108 made of rubber materials is arranged at the bottom of the negative pressure groove 107, the interlayer 108 is located between the negative pressure groove 107 and the upper space 102, and when the upper space forms a negative pressure or vacuum state, the interlayer 108 deforms to enable negative pressure to be generated in the negative pressure groove 107 and the sealing cover 2 to be tightly attracted.
A method for using butanediol low-temperature water removal equipment comprises the following steps:
s1, charging: pouring butanediol containing moisture into a containing cavity of the distillation kettle 1, keeping the liquid level line of the butanediol below the first one-way valve, and covering the sealing cover 2;
s2, sealing: the containing cavity is closed by the sealing structure formed between the annular sealing ring 206 and the annular sealing groove 106, the interlayer 108 is pulled down by the negative pressure state of the upper space 102, the negative pressure state is formed in the negative pressure groove 107, and the sealing cover 2 is further attracted;
s3, vacuumizing: further vacuumizing the upper space 102 and the accommodating cavity of the distillation kettle 1 by using an external vacuum pump to reduce the boiling point of water in the butanediol;
s4, heating: introducing steam into the heating pipe 3 by using an external steam pipeline to heat the butanediol, and heating the water in the butanediol to accelerate evaporation;
s5, stirring: the steam flows and pushes the inner blade 402 to rotate, the inner blade 402 drives the outer blade 403 to rotate by utilizing the rotary clamping ring 401, the outer blade 403 pushes the butanediol to flow, the heating uniformity of the butanediol is improved, further, the butanediol between the outer blades 403 which rotate relatively can be pushed to surge relatively by adopting a pair of outer blades 403 which rotate relatively, and the mixed flow efficiency and effect are improved;
s6, monitoring: the moisture is mixed with anhydrous copper sulfate 204 through the breathable spacer 203, the anhydrous copper sulfate 204 is changed into blue-water copper sulfate when meeting water, and the distillation effect and progress can be known by observing the blue changing degree of the anhydrous copper sulfate 204 through the transparent sealing layer 205;
s7, adjustment: by embedding anhydrous copper sulfate 204 powder in the breathable spacers 203, the sealing layer 205 can be opened midway to replace the breathable spacers 203 containing anhydrous copper sulfate 204, so that the moisture absorption effect of the breathable spacers 203 is ensured, and the distillation condition is accurately known.
Example 2
On the basis that the other technical schemes are not changed, the clamping cover 301 is movably screwed on the corresponding heating pipe 3 in a threaded connection mode, so that the clamping cover 301 can be further adjusted.
Example 3
On the basis that other technical schemes are not changed, the fluid directors 4 are used in pairs, the two oppositely arranged fluid directors 4 form a convection device, and then butanediol in each area is impacted and fused with each other, and flows to the surrounding areas more effectively and uniformly.
Example 4
On other technical scheme keep unchangeable basis above-mentioned, lock hoop 304 is total two, and screws the laminating each other and form anti-skidding structure, all is equipped with anti-skidding rubber on lock hoop 304's the face of laminating each other, anti-skidding rubber is used for the face of laminating to be the rough surface.
Example 5
On the basis that the other technical solutions are not changed, a second one-way valve 105 is arranged between the upper space 102 and the lower space 101 for adjusting the air pressure and the vacuum state of the lower space.
Example 6
On the basis that other technical schemes are not changed, the heating medium introduced into the heating pipe 3 is hot oil so as to improve the propelling effect on the inner blades and improve the heat capacity and the heating efficiency.
Example 7
On other technical scheme keep unchangeable basis, in order to prevent hot oil or vapor entering cavity, set up the metal covering that the one side of round to keeping away from the terminal surface extends on rotatory snap ring 401, the metal covering is made by the better copper sheet of heat conductivility, and the annular outer fringe of metal covering supports respectively on the heating pipe 3 surface of corresponding side, forms sealed chamber, heats the metal covering when hot oil, and the metal covering inflation and deformation support on heating pipe 3 more closely, improves the leakproofness automatically, guarantees the isolation effect of hot oil and butanediol.
In the description of this patent, it is to be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "front", "rear", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships shown in the drawings, and are used for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the patent.
In this patent, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which shall fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a butanediol low temperature dewatering equipment, includes stills (1) and be used for sealed stills (1) closing cap (2), stills (1) expert has heating pipe (3), its characterized in that:
the side wall of the distillation kettle (1) is of a double-layer structure formed by an inner wall and an outer wall, the double-layer structure is divided into a lower space (101) and an upper space (102) which are mutually independent, and the lower space (101) and the upper space (102) are both vacuum; a vacuum pump insertion opening (103) is formed in the outer wall of the upper space (102), and a first one-way valve (104) communicated with an accommodating cavity of the distillation kettle (1) is formed in the inner wall of the upper space (102);
the heating pipe (3) is embedded in the distillation kettle (1), two ports of the heating pipe (3) extend to the outside of the distillation kettle (1), and the middle section of the heating pipe (3) is positioned in the accommodating cavity of the distillation kettle (1);
the sealing cover (2) comprises an annular frame (201), a limiting ring is arranged on the inner side wall of the frame (201), a net structure (202) is arranged on the lower portion of the inner side of the frame (201), a breathable spacer (203) is laid above the net structure (202), anhydrous copper sulfate (204) is arranged on the breathable spacer (203), a transparent sealing layer (205) is arranged above the sealing cover (2), and the sealing layer (205) is supported by the limiting ring.
2. The butanediol low temperature water removal device of claim 1, wherein: the heating pipes (3) are of a segmented structure, and a fluid director (4) is arranged between each two segments of heating pipes (3); the fluid director (4) is including seal card rotatory snap ring (401) between two heating pipes (3), be equipped with interior blade (402) and outer blade (403) on the medial surface and the lateral surface of rotatory snap ring (401) respectively, interior blade (402) are located the sealed space inside that heating pipe (3) and rotatory snap ring (401) formed, outer blade (403) are located above-mentioned sealed space outside.
3. The butanediol low temperature water removal device of claim 2, wherein: the fluid directors (4) are used in pairs, and the two oppositely arranged fluid directors (4) form a convection device.
4. The butanediol low temperature water removal device of claim 2, wherein: a clamping cover (301) is arranged on the heating pipe (3), and a through hole (302) for the butanediol to pass through is formed in the clamping cover (301); the clamping covers (301) respectively positioned on two adjacent heating pipes (3) surround the fluid director (4) positioned between the two heating pipes (3); the outer side wall of each clamping cover (301) extends out to form a plurality of strip-shaped structures (303) extending along the axial direction of the fluid director (4), the two clamping covers (301) which are matched are mutually inserted by utilizing the strip-shaped structures (303) on the clamping covers, and the strip-shaped structures (303) are sleeved with locking hoops (304) in a threaded matching mode.
5. The butanediol low temperature water removal device of claim 4, wherein: the clamping cover (301) is movably sleeved on the corresponding heating pipe (3) in a screwed connection mode.
6. The butanediol low temperature water removal device of claim 4, wherein: the lock hoop (304) is total two, and screws the laminating each other and forms anti-skidding structure, all is equipped with anti-skidding rubber on the face of laminating each other of lock hoop (304), the face that anti-skidding rubber is used for the laminating is the rough surface.
7. The butanediol low temperature water removal device of claim 2, wherein: all be equipped with annular groove (305) on the side that snap ring and heating pipe (3) tip contacted, be equipped with U type sealing washer in the recess, the tip of heating pipe (3) inserts in annular groove (305) that correspond the side to it is sealed by U type sealing washer.
8. The butanediol low temperature water removal device of claim 1, wherein: steam is introduced into the heating pipe (3), and the part of the heating pipe (3) positioned in the accommodating cavity of the distillation kettle (1) is arranged in a spiral surrounding manner; a second one-way valve (105) is arranged between the upper space (102) and the lower space (101).
9. The butanediol low temperature water removal device of claim 1, wherein: an annular sealing groove (106) is formed in an opening of the distillation kettle (1), the section of the annular sealing groove (106) is V-shaped, and an annular sealing ring (206) matched with the annular sealing groove (106) is arranged on the sealing cover (2); a plurality of negative pressure grooves (107) are arranged on the upper end face of the distillation kettle (1), an interlayer (108) made of rubber materials is arranged at the bottom of each negative pressure groove (107), and the interlayer (108) is located between each negative pressure groove (107) and the upper space (102).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910281967.4A CN109966769B (en) | 2019-04-09 | 2019-04-09 | Butanediol low-temperature water removal equipment and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910281967.4A CN109966769B (en) | 2019-04-09 | 2019-04-09 | Butanediol low-temperature water removal equipment and use method thereof |
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| CN109966769B true CN109966769B (en) | 2021-06-04 |
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2019
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| DE202009015336U1 (en) * | 2009-11-09 | 2010-01-14 | Asia Vital Components Co., Ltd., Hsin Chuan City | heat pipe |
| CN204197378U (en) * | 2014-11-03 | 2015-03-11 | 佛山市三水合成电器实业有限公司 | Without the vacuum extractor that lock is self-styled |
| CN206526526U (en) * | 2017-02-23 | 2017-09-29 | 江西赫信化学有限公司 | A kind of refined terpinol low energy cost vacuum drying device |
| CN109187109A (en) * | 2018-10-12 | 2019-01-11 | 安徽兴锂新能源有限公司 | A kind of solvent dehydration/purificasystem system and its application method with novel sampling device |
| CN109260951A (en) * | 2018-10-14 | 2019-01-25 | 苏州五颗星特种超滤膜科技有限公司 | Ultrafiltration apparatus |
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