CN113908571B - Laboratory acid purification device - Google Patents
Laboratory acid purification device Download PDFInfo
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- CN113908571B CN113908571B CN202111387258.8A CN202111387258A CN113908571B CN 113908571 B CN113908571 B CN 113908571B CN 202111387258 A CN202111387258 A CN 202111387258A CN 113908571 B CN113908571 B CN 113908571B
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- acid
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- orthoacid
- evaporation tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0011—Heating features
- B01D1/0017—Use of electrical or wave energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0064—Feeding of liquid into an evaporator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0082—Regulation; Control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a laboratory acid purification device which comprises an orthoacid evaporation tank, an acid adding barrel, an acid storage funnel, a product collecting bottle and a heating base for heating the orthoacid evaporation tank, wherein the acid purification can be automatically completed.
Description
Technical Field
The invention relates to the technical field of acid purification, in particular to a laboratory acid purification device.
Background
In the precise analysis application scenes such as ICP, ICP-MS and the like, in order to ensure the extremely low detection limit of the instrument, strict requirements are often put on the purity of laboratory acid; especially in the field of ultra trace element analysis of geology, food, semiconductors and the like, common commercial analytical pure and superior pure reagents often cannot meet the experimental requirements to cause wrong or larger-deviation analysis results, while commercial ultra-pure acid is high in price and difficult to meet a large number of requirements of laboratory daily analysis; thus, a small acid purification unit configured in a laboratory becomes an economically viable high purity acid acquisition pathway.
The common laboratory acid purification device purifies acid through a sub-boiling distillation mode, and the general working principle is that a heating device with controllable temperature such as a heating plate, an infrared heating lamp and other heat sources are utilized to heat the acid liquid in a non-contact mode, so that the acid liquid is slowly evaporated under the condition of being lower than the boiling point, and then the acid vapor obtained by evaporation is condensed, so that the high-purity acid liquid is obtained, in the actual operation process, the device is required to be manually subjected to operations such as acid adding, head and tail removing and the like, and the time and the labor are wasted, and a certain danger is caused, so that the laboratory acid purification device is urgently needed to solve the problems.
Disclosure of Invention
The invention provides a laboratory acid purifying device which is simple to operate, automatically completes the acid purification and the collection and discarding of head acid and tail acid, and improves the safety of operation, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a laboratory acid purification device, includes orthoacid evaporation tank, adds sour bucket, stores up sour funnel and product collecting bottle to and be used for the heating base to orthoacid evaporation tank heating, wherein, orthoacid evaporation tank bottom with add sour bucket intercommunication, orthoacid evaporation tank top is equipped with the condensed acid discharge port, the adjustment mechanism is installed to condensed acid discharge port department, and adjustment mechanism control condensed acid discharge port communicates with storing up sour funnel, or condensed acid discharge port communicates with product collecting bottle.
Preferably, the height of the opening of the acid adding barrel is lower than that of the condensed acid discharge opening, and a non-contact liquid level sensor is arranged on the acid adding barrel to control the retention amount of tail acid in the acid adding barrel.
Preferably, the heating base is provided with a heating control system and a heating sheet contacted with the orthoacid evaporation tank, and the heating control system is connected with the heating sheet to control the heating sheet to work or transmit signals generated by the non-contact liquid level sensor to the heating control system to control the heating sheet to work.
Preferably, the heating plate is in a ring shape and has a temperature sensing function, and is connected with the heating control system through a cable so as to feed back temperature information to the heating control system.
Preferably, the adjustment mechanism includes the blow off pipe, advances sour pipe and adjustable blast pipe, the blow off pipe level is laid, its one end links to each other with the condensed acid discharge port, and the other end communicates with the product collecting bottle, wherein, install the cross on the blow off pipe, advance sour pipe and adjustable blast pipe and all vertically lay, adjustable blast pipe one end with the cross top links to each other, and the other end stretches into in the acid storage funnel, advance sour pipe one end and cross bottom link to each other, and the other end stretches into in the acid storage funnel, just advance sour pipe stretch into acid storage funnel one end is the U type, and with the interior acidizing fluid submergence adjustable blast pipe of acid storage funnel stretches into the end, forms sealedly in the acid storage funnel.
Preferably, one end of the adjustable exhaust pipe extending into the acid storage funnel is a movable end, and the adjustable exhaust pipe moves along the vertical direction to adjust the distance between the extending end of the adjustable exhaust pipe and the bottom end of the acid storage funnel.
Preferably, a collecting chamber is arranged at the top of the orthoacid evaporation tank, a horn-shaped partition plate is arranged between the collecting chamber and the top of the orthoacid evaporation tank, wherein the horn-shaped partition plate is installed at an inclined angle of 3-5 degrees with the horizontal plane, the low point of the horn-shaped partition plate corresponds to the condensed acid discharge port, and condensed acid is gathered and guided to flow towards the condensed acid discharge port.
Preferably, the liquid inlet pipe and the liquid discharge pipe are arranged at the bottom end of the orthoacid evaporation tank, one end of the liquid inlet pipe is connected with the bottom end of the orthoacid evaporation tank, the other end of the liquid inlet pipe is connected with the bottom end of the acid adding barrel, one end of the liquid discharge pipe is connected with the liquid inlet pipe through a tee joint, the other end of the liquid discharge pipe is provided with a waste liquid discharge valve, and the side surface of the orthoacid evaporation tank is provided with an overflow pipe and is connected with the upper part of the acid adding barrel through the overflow pipe.
Preferably, the acid storage hopper is provided with a waste discharge valve at the bottom end, and the waste discharge valve is connected with a liquid discharge pipe through a tee joint.
Preferably, a perfluorinated plastic shell is arranged on the outer side of the orthoacid evaporation tank, and a heat preservation filler is arranged between the perfluorinated plastic shell and the orthoacid evaporation tank.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, through the cooperation of the acid evaporation tank, the acid adding barrel, the acid storage funnel, the product collecting bottle and the heating base, the acid purification can be automatically completed, in the purification process, by utilizing the functions of the non-contact liquid level sensor and the acid storage funnel which are arranged on the acid adding barrel, the head acid and the tail acid which are more in impurities are independently collected, and through the functions of the adjusting mechanism, the acid liquid in the acid storage funnel is immersed into the adjustable exhaust pipe to form a closed state automatically, the impurities in the acid storage funnel are restricted from being exchanged with the subsequent acid liquid in the pipeline, the quality of the subsequent condensed acid is ensured, the whole process unattended operation in the acid purification process can be realized, the disassembly and assembly times of the collecting bottle are reduced, the operation complexity and the time of the operators exposed to acid mist are reduced, the safety of the experimenters and the purity of the purified acid are facilitated, and meanwhile, the head acid discarding amount and tail acid preserving amount can be controlled by adjusting the non-contact liquid level sensor and the adjustable exhaust pipe, and the flexible change can be facilitated for different orthogenic quality and orthogenic properties.
Drawings
FIG. 1 is a schematic diagram of the structure of an acid purification apparatus of the present invention;
FIG. 2 is a schematic view showing the internal structure of the acid purification apparatus of the present invention;
FIG. 3 is a schematic diagram of a hydrofluoric acid purification process of the present invention;
reference numerals in the drawings: 1. an orthoacid evaporation tank; 2. adding an acid barrel; 3. an acid storage funnel; 4. a product collection bottle; 5. heating the base; 6. a condensed acid discharge port; 7. a non-contact liquid level sensor; 8. a heating control system; 9. a heating sheet; 10. a discharge pipe; 11. an acid inlet pipe; 12. an adjustable exhaust pipe; 13. a four-way joint; 14. a movable end; 15. a collection chamber; 16. a horn-shaped partition; 17. a liquid inlet pipe; 18. a liquid discharge pipe; 19. a tee joint; 20. a waste liquid discharge valve; 21. overflowing; 22. a waste valve; 23. a perfluoroplastic housing; 24. preserving heat and filling; 25. a barrel cover; 26. supporting feet; 27. a fixing plate; 28. collecting bottle caps; 39. an exhaust port; 40. a cephalic acid collection control valve.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Example 1
As shown in fig. 1-2, a laboratory acid purifying device comprises an orthoacid evaporation tank 1, an acid adding barrel 2, an acid storage funnel 3, a product collecting bottle 4 and a heating base 5 for heating the orthoacid evaporation tank 1, wherein the bottom of the orthoacid evaporation tank 1 is communicated with the acid adding barrel 2, a condensed acid discharge port 6 is arranged at the top of the orthoacid evaporation tank 1, an adjusting mechanism is arranged at the condensed acid discharge port 6, and the adjusting mechanism controls the condensed acid discharge port 6 to be communicated with the acid storage funnel 3 or the condensed acid discharge port 6 to be communicated with the product collecting bottle 4.
Wherein, feed liquor pipe 17 and fluid-discharge tube 18 are installed to orthoacid evaporation jar 1 bottom, feed liquor pipe 17 one end links to each other with orthoacid evaporation jar 1 bottom, the other end links to each other with adding sour bucket 2 bottom, fluid-discharge tube 18 one end links to each other with feed liquor pipe 17 through tee bend 19, waste liquid discharge valve 20 is installed to the other end, be used for letting in orthoacid and discharge tail acid, orthoacid evaporation jar 1 side-mounting overflow 21 pipe links to each other with adding sour bucket 2 upper portion, be used for the pressure balance of adding sour bucket 2 in the boiling distillation process, prevent excessive acid pollution condensation chamber when adding the sour excessive simultaneously, be equipped with collecting chamber 15 at orthoacid evaporation jar 1 top, install loudspeaker form baffle 16 between collecting chamber 15 and orthoacid evaporation jar 1 top, wherein loudspeaker form baffle 16 is 3-5 inclination installation with the level, and the low point of loudspeaker form baffle 16 corresponds with condensed acid discharge port 6, gather and guide condensed acid flow to condensed acid discharge port 6, condensation collecting chamber 15 takes the hemispherical, be made by the high purity plastics of PFA thin, the sour fog condensation of being convenient for.
Referring to fig. 2, the top of the acid adding barrel 2 is provided with a threaded barrel cover 25, and the sealing can be screwed after the acid adding is completed; the bottom is V-shaped, is connected with the bottom of the orthoacid evaporation tank 1 and the liquid discharge pipe 18 through the liquid inlet pipe 17 and the tee joint 19, the side surface of the acid adding barrel 2 is provided with scales, the liquid level in the barrel is leveled with the orthoacid evaporation tank 1 according to the principle of a communicating vessel, the orthoacid liquid level in the orthoacid evaporation tank 1 is indicated, the barrel opening height of the acid adding barrel 2 is lower than the condensed acid discharge opening 6, compared with a traditional acid purifier, the serial connection of the device can be realized under the condition that a front-stage acid purifying device is not padded, the quality of acid liquid is further improved without modifying the field for acid purification, the non-contact liquid level sensor 7 is arranged on the acid adding barrel 2, and the tail acid retention after the sub-boiling distillation is arranged by adjusting the height of the non-contact liquid level sensor 7.
Referring to fig. 2, a perfluoroplastic shell 23 is installed on the outer side of the orthoacid evaporation tank 1, a heat preservation filler 24 is arranged between the perfluoroplastic shell 23 and the orthoacid evaporation tank 1, the perfluoroplastic shell 23 can prevent the internal heating plate 9 and the heat preservation filler 24 from being exposed to acid mist to be corroded and damaged, and the joint part of the perfluoroplastic shell 23 and the orthoacid evaporation tank 1 is sealed by hot melt adhesive; the heat preservation filler 24 is made of flame-retardant heat preservation materials, can shorten the temperature balance time of the orthoEvaporation tank 1, slow down heat dissipation, improve the device efficiency and reduce energy consumption, a heating control system 8 and a heating plate 9 contacted with the orthoevaporation tank 1 are arranged on the heating base 5, the heating control system 8 is connected with the heating plate 9, the heating plate 9 is controlled to work, or the heating plate 9 is controlled to work according to signals generated by the non-contact liquid level sensor 7, wherein the heating plate 9 is annular and has a temperature sensing function, and is connected with the heating control system 8 through a cable to feed back temperature information to the heating control system 8.
Specifically, the heating temperature can be manually input to control the heating control system 8 to work, or the heating control system 8 stops heating when the liquid level is lower than the position of the non-contact liquid level sensor 7 through the signal of the non-contact liquid level sensor 7, wherein the temperature information fed back by the heating sheet 9 is transmitted to the heating control system 8 in real time, so that the heating temperature is always not higher than the set temperature, and the heating is stopped when the temperature of the heating sheet 9 is higher than the set temperature, four supporting legs 26 are arranged below the heating base 5, and fixing plates 27 are arranged on the sides for supporting and fixing the device.
Referring to fig. 2, the adjusting mechanism comprises a discharge pipe 10, an acid inlet pipe 11 and an adjustable exhaust pipe 12, wherein one end of the discharge pipe 10 is horizontally arranged, one end of the discharge pipe is connected with a condensed acid discharge port 6, the other end of the discharge pipe is communicated with a product collecting bottle 4, a four-way valve 13 is arranged on the discharge pipe 10, the acid inlet pipe 11 and the adjustable exhaust pipe 12 are vertically arranged, one end of the adjustable exhaust pipe 12 is connected with the top end of the four-way valve 13, the other end of the adjustable exhaust pipe extends into the acid storage funnel 3, one end of the acid inlet pipe 11 is connected with the bottom end of the four-way valve 13, the other end of the acid inlet pipe extends into the acid storage funnel 3, one end of the acid inlet pipe 11 extending into the acid storage funnel 3 is U-shaped, the acid storage funnel 3 is sealed along with the immersed by the acid liquid in the acid storage funnel 3, and a head acid collecting control valve 40 is arranged on the acid inlet pipe 11.
Wherein, store up sour funnel 3 whole sealed, there are two loose joint interfaces at the top and be used for connecting into sour pipe 11 and adjustable blast pipe 12, waste discharge valve 22 is installed to sour collection bottle bottom end, waste discharge valve 22 links to each other with fluid-discharge tube 18 through tee bend 19, waste discharge valve 22 is in normally closed state, open and release waste acid after the distillation is over, side has scale and adjustable blast pipe 12 to confirm first acid and keep away the volume jointly, adjustable blast pipe 12 stretches into sour funnel 3 one end and is movable end 14, remove along vertical direction, adjust adjustable blast pipe 12 and stretch into the interval of end and sour funnel 3 bottom, when sour funnel 3 interior liquid level submergence adjustable blast pipe 12 stretches into the end as sour funnel 3 internal pressure is stored up, condensed acid can't get into sour funnel 3 through sour pipe 11, get into product collection bottle 4 through discharge tube 10 from condensed acid.
Referring to fig. 2, the top end of the product collecting bottle 4 is screwed with a collecting bottle cap 28 and connected with the discharge pipe 10 through the collecting bottle cap 28, the top of the product collecting bottle 4 is provided with an air outlet 39 for discharging air pressure in the device, so that condensed acid is convenient to flow out, and the collecting bottle cap 28 is consistent with the cap of the acid adding barrel 2 in size, so that a plurality of devices are convenient to be connected in series.
The pipeline is made of flexible high-purity PFA plastic, and the interfaces are connected in a PEEK joint mode and can be flexibly adjusted.
Referring to fig. 3, 1L hydrofluoric acid was purified by the apparatus of the present invention, and the purification process was as follows:
(A) Closing a waste liquid discharge valve 20 and a waste discharge valve 22, opening a cephalic acid collection control valve 40, adjusting a non-contact liquid level sensor 7 to a 2100mL scale mark of an acid adding barrel, enabling the bottom of an adjustable exhaust pipe 12 to point to a 350mL scale mark of an acid storage funnel, slowly adding 1L of analytically pure commercial hydrofluoric acid reagent into the acid adding barrel 2, and enabling the acid liquid to enter an orthoacid evaporation tank 1 through a bottom pipeline according to a communicating vessel principle, wherein orthoacid is not directly discharged through a liquid discharge pipe 18 because of the control of the waste liquid discharge valve 20;
(B) According to the nature and yield requirements of the acid, setting a sub-boiling distillation temperature which is usually 20-40 ℃ lower than the boiling point of the purified acid by a heating control system 8, electrifying a heating plate 9 at intervals by the heating control system 8, slowly heating the heating plate 9 to the set temperature and keeping the temperature +/-5 ℃, obtaining 10-50mL/h yield after 0.5-1 hour temperature balance after starting in a cold state, and enabling 50-60mL of acid liquor which is distilled initially to enter an acid storage funnel 3 through an acid inlet pipe 11 under the action of gravity when entering a four-way 13 through a discharge pipe 10;
(C) When the acid liquor in the acid storage funnel 3 submerges the bottom end of the adjustable exhaust pipe 12, the gas in the acid storage funnel 3 can not be exhausted through the acid storage funnel, meanwhile, the bottom of the acid inlet pipe 11 is provided with a U-shaped bend, and the gas can not be exhausted from the original path of the acid inlet pipe 11, so that the acid storage funnel 3 is airtight, the condensed acid liquor passing through the four-way 13 can not enter the acid inlet pipe 11 any more, but continuously enters the product collecting bottle 4 through the exhaust pipe 10, and gas separation is arranged between the acid at the head of the acid storage funnel and the bottom of the acid inlet pipe 11, thereby limiting the exchange of impurities in the acid at the head and the subsequent acid liquor in the pipeline, and ensuring the quality of the subsequent condensed acid;
(D) When the liquid level of the acid adding barrel 2 falls below the fixed position of the non-contact sensor, the heating control system 8 immediately stops heating, at the moment, the orthoacid amount in the barrel and the evaporating pot is 100mL, 80-100mL of the orthoacid reserved after the device is cooled is sub-boiling distilled tail acid, the waste liquid discharge valve 20 and the waste discharge valve 22 are opened, the waste head acid and tail acid are discharged, 50mL of the head acid and 100mL of the tail acid are discarded according to 1L of the orthoacid, and the final yield can reach 85%.
The content of the purified acid impurities is tested by utilizing the inductively coupled plasma mass spectrum, and the fact that the content of the purified acid metal element impurities obtained by single purification is lower than 1ppb is found, so that the MOS-level reagent standard is achieved, and the daily analysis and detection requirements of a laboratory are met.
Finally, it should be noted that: the foregoing is merely a preferred example of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. 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 (9)
1. A laboratory acid purification apparatus, characterized in that: the device comprises an orthoacid evaporation tank, an acid adding barrel, an acid storage funnel, a product collecting bottle and a heating base for heating the orthoacid evaporation tank, wherein the bottom of the orthoacid evaporation tank is communicated with the acid adding barrel, a condensed acid discharge port is arranged at the top of the orthoacid evaporation tank, an adjusting mechanism is arranged at the condensed acid discharge port, and the adjusting mechanism controls the condensed acid discharge port to be communicated with the acid storage funnel or the condensed acid discharge port to be communicated with the product collecting bottle;
wherein, adjustment mechanism includes the blow off pipe, advances sour pipe and adjustable blast pipe, the blow off pipe level is laid, its one end links to each other with the condensed acid discharge port, and the other end communicates with the product collecting bottle, wherein, install the cross on the blow off pipe, advance sour pipe and adjustable blast pipe and all vertically lay, adjustable blast pipe one end with the cross top links to each other, and the other end stretches into in the sour funnel of storing up, advance sour pipe one end and cross bottom link to each other, and the other end stretches into in the sour funnel of storing up, just advance sour pipe stretch into sour funnel one end is the U type, and with sour immersion of acid in the sour funnel adjustable blast pipe stretches into the end of storing up, form airtight in the sour funnel of storing up.
2. The laboratory acid purification device according to claim 1, wherein: the height of the bung hole of the acid adding barrel is lower than that of the condensed acid discharge hole, and a non-contact liquid level sensor is arranged on the acid adding barrel to control the retention amount of tail acid in the acid adding barrel.
3. The laboratory acid purification device according to claim 2, wherein: the heating base is provided with a heating control system and a heating sheet contacted with the orthoacid evaporation tank, wherein the heating control system is connected with the heating sheet to control the heating sheet to work or transmits signals generated by the non-contact liquid level sensor to the heating control system to control the heating sheet to work.
4. A laboratory acid purification device according to claim 3, wherein: the heating plate is in a ring shape and has a temperature sensing function, and is connected with the heating control system through a cable to feed back temperature information to the heating control system.
5. The laboratory acid purification device according to claim 1, wherein: the adjustable blast pipe stretches into acid storage funnel one end is the expansion end, moves along vertical direction, adjusts the adjustable blast pipe and stretches into the interval of end and acid storage funnel bottom.
6. The laboratory acid purification device according to any one of claims 4-5, wherein: the orthoacid evaporation tank top is equipped with the collecting chamber, install loudspeaker form baffle between collecting chamber and the orthoacid evaporation tank top, wherein, loudspeaker form baffle personally submits 3-5 inclination with the level and installs, and loudspeaker form baffle's low point with the condensed acid discharge port corresponds, gathers and guide condensed acid flow direction the condensed acid discharge port.
7. The laboratory acid purification device according to claim 1, wherein: the liquid inlet pipe and the liquid discharge pipe are installed at the bottom end of the orthoacid evaporation tank, one end of the liquid inlet pipe is connected with the bottom end of the orthoacid evaporation tank, the other end of the liquid inlet pipe is connected with the bottom end of the acid adding barrel, one end of the liquid discharge pipe is connected with the liquid inlet pipe through a tee joint, the other end of the liquid discharge pipe is provided with a waste liquid discharge valve, and the side face of the orthoacid evaporation tank is provided with an overflow pipe and is connected with the upper portion of the acid adding barrel through the overflow pipe.
8. The laboratory acid purification apparatus according to claim 6, wherein: the acid storage hopper is characterized in that a waste discharge valve is arranged at the bottom end of the acid storage hopper, and the waste discharge valve is connected with a liquid discharge pipe through a tee joint.
9. The laboratory acid purification device according to claim 1, wherein: the outer side of the orthoacid evaporation tank is provided with a perfluorinated plastic shell, and a heat preservation filler is arranged between the perfluorinated plastic shell and the orthoacid evaporation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387258.8A CN113908571B (en) | 2021-11-22 | 2021-11-22 | Laboratory acid purification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387258.8A CN113908571B (en) | 2021-11-22 | 2021-11-22 | Laboratory acid purification device |
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| CN113908571A CN113908571A (en) | 2022-01-11 |
| CN113908571B true CN113908571B (en) | 2023-08-15 |
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| US5061348A (en) * | 1988-08-12 | 1991-10-29 | Alameda Instruments | Sulfuric acid reprocessor with continuous purge of second distillation vessel |
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2021
- 2021-11-22 CN CN202111387258.8A patent/CN113908571B/en active Active
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| US5061348A (en) * | 1988-08-12 | 1991-10-29 | Alameda Instruments | Sulfuric acid reprocessor with continuous purge of second distillation vessel |
| CN104192803A (en) * | 2014-09-10 | 2014-12-10 | 太仓中化环保化工有限公司 | Sub-boiling distillation method for high-purity hydrochloric acid |
| CN104355281A (en) * | 2014-11-18 | 2015-02-18 | 重庆市远翔食品有限公司 | Filling structure capable of regulating amount of beverage |
| CN207101935U (en) * | 2017-08-28 | 2018-03-16 | 亚洲硅业（青海）有限公司 | A kind of new automatic sub-boiling distillation device |
| CN208542228U (en) * | 2018-06-20 | 2019-02-26 | 朱健 | A kind of sub-boiling distillation equipment purifying original acid |
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