CN115477283B - Preparation method and equipment of electronic-grade hydrochloric acid - Google Patents

Preparation method and equipment of electronic-grade hydrochloric acid Download PDF

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Publication number
CN115477283B
CN115477283B CN202211150110.7A CN202211150110A CN115477283B CN 115477283 B CN115477283 B CN 115477283B CN 202211150110 A CN202211150110 A CN 202211150110A CN 115477283 B CN115477283 B CN 115477283B
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hydrochloric acid
condensed
fixedly connected
block
rectifying tower
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CN115477283A (en
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陈万澍
华鹏
郑琦
唐荣苹
傅美玲
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Fujian Tianfu Electronic Materials Co ltd
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Fujian Tianfu Electronic Materials Co ltd
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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
    • C01B7/00—Halogens; Halogen acids
    • C01B7/01—Chlorine; Hydrogen chloride
    • C01B7/012—Preparation of hydrogen chloride from the elements
    • 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
    • B01D3/322—Reboiler specifications
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0423—Beds in columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1418—Recovery of products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • B01D53/185—Liquid distributors
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/01—Chlorine; Hydrogen chloride
    • C01B7/07—Purification ; Separation
    • C01B7/0706—Purification ; Separation of hydrogen chloride
    • C01B7/0712—Purification ; Separation of hydrogen chloride by distillation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/01—Chlorine; Hydrogen chloride
    • C01B7/07—Purification ; Separation
    • C01B7/0706—Purification ; Separation of hydrogen chloride
    • C01B7/0718—Purification ; Separation of hydrogen chloride by adsorption
    • C01B7/0725—Purification ; Separation of hydrogen chloride by adsorption by active carbon
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/24—Halogens or compounds thereof
    • C25B1/26—Chlorine; Compounds thereof
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/26—Halogens or halogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/20—Halogens or halogen compounds
    • B01D2257/202—Single element halogens
    • B01D2257/2025—Chlorine
    • 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Electrochemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Pipe Accessories (AREA)

Abstract

The invention is suitable for the technical field of electronic-grade hydrochloric acid, and provides electronic-grade hydrochloric acid preparation equipment which comprises a pipeline, wherein a fixed shell is fixedly connected to the outer wall of the pipeline, a protective shell is fixedly connected to the outer side of the fixed shell through a bolt, a stabilizing frame is fixedly connected to the inner wall of the protective shell, a sealing block is arranged inside the stabilizing frame, an electric wrench is arranged on the inner side of the stabilizing frame, a pushing assembly is arranged at the joint of the sealing block and a clamping jaw, after the electric contact block is electrically contacted with an electric contact groove, the electric wrench is electrified after the electric contact block is electrified, the electric wrench is contacted with a bolt at a pipeline interface, and the bolt can be screwed after the electric wrench is electrified and started, so that the effect of primarily fixing the position of the pipeline interface can be realized, the problem of large-range leakage of hydrochloric acid is prevented, the problem of chemical engineering accidents caused by the leakage of hydrochloric acid is further reduced, and the safety of the hydrochloric acid preparation equipment in the hydrochloric acid preparation process is improved.

Description

Preparation method and equipment of electronic-grade hydrochloric acid
Technical Field
The invention relates to the technical field of electronic-grade hydrochloric acid, in particular to a preparation method and equipment of electronic-grade hydrochloric acid.
Background
The purification preparation method of hydrochloric acid is various, and different purification technologies can be adopted according to different actual situations. The method usually adopted at present comprises an isothermal diffusion method, a distillation method, a sub-boiling method, a rectification method, an ion exchange adsorption method, a gas absorption method and the like, wherein the sub-boiling (or double sub-boiling) purification method in a clean environment has the best effect and the highest product purity, and the rectification method for purifying high-purity hydrochloric acid is the mainstream technology at present and is characterized by large yield, high purity, relatively complex equipment, relatively complex operation, high equipment design and processing difficulty and capability of being made into large-scale equipment.
In the production facility of hydrochloric acid purification preparation, all need to connect through the pipeline, the problem of leaking appears easily after long-time use in the interface position of pipe connection, because the nature of hydrochloric acid can lead to the fact inevitable corruption problem to the interface position, but hardly carry out real-time supervision to pipeline interface position in equipment production process, if not maintain in time, long-time leaking can lead to the pipeline interface to be corroded seriously by hydrochloric acid, finally lead to a large amount of hydrochloric acid to leak, cause the problem that the incident appears in chemical production.
Therefore, it is desirable to provide a method and an apparatus for preparing electronic grade hydrochloric acid, which are aimed at solving the above problems.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention aims to provide a preparation method of electronic-grade hydrochloric acid and equipment thereof, and aims to solve the defect that the pipeline interface cannot be timely relieved and reminded after leakage occurs.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of electronic grade hydrochloric acid comprises the following steps: s1, carrying out electrolytic separation on salt water or a chloride ion salt solution, absorbing chlorine and hydrogen generated by electrolysis, mixing the collected chlorine and hydrogen, and igniting to obtain hydrogen chloride gas; s2, introducing the hydrogen chloride gas into an activated carbon tower to absorb impurities, and absorbing free chlorine and the impurities in the hydrogen chloride gas through the activated carbon tower; s3, introducing the purified hydrogen chloride gas into an absorption tower of a hydrochloric acid system, performing spray absorption by using absorption liquid, and introducing high-purity industrial hydrochloric acid into a raw material storage tank; s4, pumping high-purity industrial hydrochloric acid into a rectifying tower kettle from a raw material storage tank through a raw material input pump, heating the bottom of the rectifying tower kettle through a heating device, so that the high-purity industrial hydrochloric acid at the bottom of the rectifying tower kettle is heated and evaporated, the evaporated high-purity industrial hydrochloric acid rises and passes through a tower plate inside the rectifying tower kettle, the temperature of the top of the rectifying tower kettle is lower relative to the temperature of the bottom, the upward evaporated hydrochloric acid vapor can be condensed, the condensed hydrochloric acid liquid flows downwards and contacts with the upward high-temperature evaporated hydrochloric acid vapor, and the condensed hydrochloric acid liquid is heated to become steam hydrochloric acid upward; s5, simultaneously, part of the steam hydrochloric acid contacts with the condensed hydrochloric acid liquid with a lower temperature, condensation flows downwards, the downward flowing condensed hydrochloric acid flows towards the inside of a reboiler, steam is heated by the reboiler for the part of the condensed hydrochloric acid to generate steam to ascend towards the inside of the rectifying tower kettle, the reboiler and the bottom of the rectifying tower kettle discharge heavy hydrochloric acid liquid into a first finished product tank, and the collected hydrochloric acid can be used for industrial grade; s6, the steam hydrochloric acid evaporated upwards enters the interior of the condenser to be condensed again, the condensed hydrochloric acid flows into the rectifying tower kettle again, the condensed hydrochloric acid enters the interior of the condenser after being rectified again, the light component hydrochloric acid solution is collected through the second finished product tank after part of the steam hydrochloric acid is condensed by the condenser, and the collected hydrochloric acid can be used for electronic grade.
As a further scheme of the invention, the raw material delivery pump is pumped into the interior of the rectifying tower kettle from the middle end of the outer wall of the rectifying tower kettle.
As a further proposal of the invention, the tower plates are alternately arranged inside the rectifying tower kettle, and the middle part of the tower plates is provided with an opening for steam hydrochloric acid to rise upwards.
The utility model provides an electronic grade hydrochloric acid preparation equipment, includes the pipeline, fixedly connected with set casing on the outer wall of pipeline, bolt fixedly connected with protective housing is passed through in the outside of set casing, the inner wall fixedly connected with steadying frame of protective housing, the inside of steadying frame is provided with sealed piece, the inboard of steadying frame is provided with electric spanner, sealed piece is provided with the promotion subassembly with the junction of clamping jaw, the gaseous detection module of inner wall fixedly connected with of protective housing, gaseous detection module's inboard articulates there is the clamping jaw, the inside of sealed piece is provided with shutoff detection mechanism, shutoff detection mechanism includes airtight subassembly, subtracts subassembly and control assembly that contracts, be provided with the closing plate on the airtight subassembly.
As a further scheme of the present invention, the pushing assembly includes a first sliding groove, a first spring, an extension rod, a telescopic push rod and a second sliding groove, the first sliding groove is formed in an inner wall of the stabilizing frame, a bottom of the first spring is fixedly connected with an inside of the stabilizing frame, two sides of the sealing block are fixedly connected with a top of the first spring through a sliding block, the sealing block is movably connected with the inside of the first sliding groove through a sliding block, the extension rod is fixedly connected with two sides of the sealing block, an outer side of the extension rod is movably connected with the top of the telescopic push rod, a bottom of the telescopic push rod is hinged with a top of the electric wrench, the second sliding groove is formed in an inner side of the stabilizing frame, and the electric wrench is slidably connected with an inside of the second sliding groove through a sliding block.
As a further scheme of the invention, the airtight assembly comprises a movable cavity and a second spring, the movable cavity is arranged in the sealing block, the top of the second spring is fixedly connected in the movable cavity, the bottom of the second spring is fixedly connected with the upper surface of the sealing plate, and the sealing plate is movably connected in the movable cavity.
As a further scheme of the invention, the detection assembly comprises a recovery groove, a fixed push rod, a lever and a lower pressing block, the recovery groove is formed in the movable cavity, the fixed push rod is hinged to the upper surface of the sealing plate, the middle of the lever is rotatably connected to the inner portion of the movable cavity, one end of the lever is rotatably connected with the top of the fixed push rod, the lower pressing block is hinged to the other end of the lever, and the lower pressing block is movably connected to the inner portion of the movable cavity.
As a further scheme of the invention, the control assembly comprises an electric contact groove, a first magnetic block, a lifting groove, a lifting block, a second magnetic block and an electric contact block, the electric contact groove is arranged at the bottom of the lower pressing block, the first magnetic block is fixedly connected to the lower end of the outer wall of the lower pressing block, the lifting groove is fixedly connected to the upper surface of the sealing plate, the lifting block is movably connected inside the lifting groove, the second magnetic block is fixedly connected to the upper end of the outer wall of the lifting block, and the electric contact block is fixedly connected to the top of the lifting block.
As a further scheme of the invention, the gas detection module is electrically connected with a device using power supply, and a sounding unit and a lighting unit for reminding are arranged in the gas detection module.
As a further scheme of the invention, the electric wrench is electrically connected with the electric contact block, a rotating device is arranged at the hinged position of the clamping jaw and the gas detection module, the rotating device is controlled by the gas detection module, active metal capable of reacting with hydrochloric acid is arranged on the inner side surface of the sealing plate, the electric contact groove is electrically connected with the device by using a power supply, and the magnetism of the opposite surfaces of the first magnetic block and the second magnetic block is opposite.
Compared with the prior art, the electronic-grade hydrochloric acid preparation equipment provided by the invention has the beneficial effects that: 1. after the electric contact block is in electrical contact with the electric contact groove, the electric wrench is powered on after the electric contact block is powered on, the electric wrench is in contact with the bolt at the pipeline interface, the bolt can be screwed down after the electric wrench is powered on and started, and further the effect of primarily fixing the position of the pipeline interface can be realized, the problem of large-range leakage of hydrochloric acid is prevented, the problem of chemical accidents caused by leakage of hydrochloric acid is further reduced, and the safety of a hydrochloric acid preparation device in the process of preparing hydrochloric acid is improved; 2. the lower pressing block is driven to move downwards by the inner side end of the lever, the lifting block in the lifting groove is driven to move upwards by the sealing plate in the upward moving process of the sealing plate in the movable cavity, the lower pressing block and the lifting block are close to each other by the short-distance upward movement of the sealing plate, the follow-up control can be effectively contacted, meanwhile, the control can be carried out by a small amount of gas, and the problem that the response cannot be timely caused by the fact that the quick contact cannot be carried out is solved; 3. the sealing block moves inwards on the inner side of the first sliding groove under the contraction action of the first spring, so that the sealing plate can seal the interface position of the pipeline, the leakage position of the pipeline interface can be detected while the problem of continuous leakage of hydrochloric acid is prevented, and the problem of certain damage to the surrounding environment caused by excessive leakage of hydrochloric acid can be prevented; 4. the fixed shell and the protective shell are combined to form the sealed shell, hydrochloric acid leaked out can be prevented from dripping to other places to corrode other equipment around the device, the problem of safety production accidents caused by hydrochloric acid leakage is further reduced, and the safety of the hydrochloric acid preparation device in the hydrochloric acid preparation process is improved.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is a schematic perspective view of the position relationship between the pipeline and the fixed shell structure of the present invention;
FIG. 3 is a schematic cross-sectional perspective view of the internal structure of the fixing shell and the protecting shell according to the present invention;
FIG. 4 is an enlarged view of the region A of FIG. 3 according to the present invention;
FIG. 5 is a perspective view of the structural attachment of the gas detection module, clamping jaw and pushing assembly of the present invention;
FIG. 6 is an enlarged view of the structure of the area B in FIG. 5 according to the present invention;
FIG. 7 is a perspective view of the sealing block of the present invention moving inside the first sliding slot and the electric wrench moving inside the second sliding slot;
FIG. 8 is an enlarged view of the structure of area C in FIG. 7 according to the present invention;
FIG. 9 is a perspective view of the internal structure of the occlusion detection mechanism of the present invention;
FIG. 10 is an enlarged view of the structure of the area D in FIG. 9 according to the present invention.
Reference numerals are as follows: 1. a pipeline; 2. a stationary case; 3. a protective shell; 4. a stabilizer frame; 5. a first chute; 6. a first spring; 7. a sealing block; 8. an extension rod; 9. a telescopic push rod; 10. a second chute; 11. an electric wrench; 12. a gas detection module; 13. a clamping jaw; 14. a movable cavity; 15. a second spring; 16. a sealing plate; 17. a recovery tank; 18. fixing the push rod; 19. a lever; 20. pressing the block; 21. an electric contact groove; 22. a first magnetic block; 23. a lifting groove; 24. a lifting block; 25. a second magnetic block; 26. an electrical contact block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
In the description of the present invention, the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
The first embodiment is as follows:
as a preferred embodiment of the present invention, a method for preparing electronic grade hydrochloric acid comprises: s1, carrying out electrolytic separation on salt water or a chloride ion salt solution, absorbing chlorine and hydrogen generated by electrolysis, mixing the collected chlorine and hydrogen, and igniting to obtain hydrogen chloride gas; s2, introducing the hydrogen chloride gas into an activated carbon tower to absorb impurities, and absorbing free chlorine and the impurities in the hydrogen chloride gas through the activated carbon tower; s3, introducing the purified hydrogen chloride gas into an absorption tower of a hydrochloric acid system, performing spray absorption by using absorption liquid, and introducing high-purity industrial hydrochloric acid into a raw material storage tank; s4, pumping high-purity industrial hydrochloric acid into a rectifying tower kettle from a raw material storage tank through a raw material input pump, heating the bottom of the rectifying tower kettle through a heating device, so that the high-purity industrial hydrochloric acid at the bottom of the rectifying tower kettle is heated and evaporated, the evaporated high-purity industrial hydrochloric acid rises and passes through a tower plate inside the rectifying tower kettle, the temperature of the top of the rectifying tower kettle is lower relative to the temperature of the bottom, the upward evaporated hydrochloric acid vapor can be condensed, the condensed hydrochloric acid liquid flows downwards and contacts with the upward high-temperature evaporated hydrochloric acid vapor, and the condensed hydrochloric acid liquid is heated to become steam hydrochloric acid upward; s5, simultaneously, part of the steam hydrochloric acid contacts with the condensed hydrochloric acid liquid with a lower temperature, condensation flows downwards, the downward flowing condensed hydrochloric acid flows towards the inside of a reboiler, steam is heated by the reboiler for the part of the condensed hydrochloric acid to generate steam to ascend towards the inside of the rectifying tower kettle, the reboiler and the bottom of the rectifying tower kettle discharge heavy hydrochloric acid liquid into a first finished product tank, and the collected hydrochloric acid can be used for industrial grade; s6, the steam hydrochloric acid evaporated upwards enters the interior of the condenser to be condensed again, the condensed hydrochloric acid flows into the rectifying tower kettle again, the condensed hydrochloric acid enters the interior of the condenser after being rectified again, the light component hydrochloric acid solution is collected through the second finished product tank after part of the steam hydrochloric acid is condensed through the condenser, and the collected hydrochloric acid can be used for electronic grade.
Example two:
as shown in fig. 1 to 10, an electronic grade hydrochloric acid preparation apparatus provided for an embodiment of the present invention includes a pipeline 1, a fixing shell 2 is fixedly connected to an outer wall of the pipeline 1, a protective shell 3 is fixedly connected to an outer side of the fixing shell 2 through a bolt, a stabilizing frame 4 is fixedly connected to an inner wall of the protective shell 3, a sealing block 7 is disposed inside the stabilizing frame 4, an electric wrench 11 is disposed inside the stabilizing frame 4, the electric wrench 11 is electrically connected to an electric contact block 26, a pushing component is disposed at a joint of the sealing block 7 and a clamping jaw 13, a gas detection module 12 is fixedly connected to an inner wall of the protective shell 3, the gas detection module 12 is electrically connected to an apparatus use power supply, a sounding unit and a lighting unit for prompting are disposed inside the gas detection module 12, the clamping jaw 13 is hinged to an inner side of the gas detection module 12, a rotation device is disposed at a hinged joint of the clamping jaw 13 and the gas detection module 12, the rotation device is controlled by the gas detection module 12, a plugging detection mechanism is disposed inside the sealing block 7, the plugging detection mechanism includes an airtight component, a shrinkage reduction component and a control component, an airtight component is disposed on the airtight component, and a sealing plate 16 is disposed on an inner side surface of the sealing plate 16 capable of reacting with active metal.
Preferably, in this embodiment, in the use, when hydrochloric acid leaks at the interface position of pipeline 1, hydrochloric acid leaked at this time combines with the vapor in the inside air of the casing that set casing 2 and protective housing 3 made up into to produce white fog, white fog is diffused in the inside back of the casing that set casing 2 and protective housing 3 made up into, gaseous detection module 12 detects that hydrochloric acid has leaked after set casing 2 and protective housing 3 inside white fog, simultaneously because the inside of gaseous detection module 12 is provided with sound production unit and luminous unit, can make sound production unit and luminous unit buzz with the light warning through gaseous detection module 12 this moment, gaseous detection module 12 control rotary device drives clamping jaw 13 and opens to the outside after rotating to the outside, clamping jaw 13 can not fix pushing the subassembly many times, make sealed piece 7 to the middle part polymerization under the effect that pushes away the subassembly, push away the subassembly simultaneously and drive electric wrench 11 and the screw thread contact of pipeline 1 interface position, can leak hydrochloric acid reaction with certain position of pipeline 1 interface through the inboard active metal of closing plate 16 and produce gas, make airtight subassembly pass through the reduction assembly, electric wrench 11 can drive electric wrench 11 through the power on the screw up the electric wrench after the effect of gas. The problem of large-area leakage is prevented.
Example three:
as shown in fig. 3 to 8, as a preferred embodiment of the present invention, the pushing assembly includes a first sliding groove 5, a first spring 6, an extension rod 8, a telescopic push rod 9 and a second sliding groove 10, the first sliding groove 5 is disposed on an inner wall of the stabilizing frame 4, a bottom of the first spring 6 is fixedly connected with an inside of the stabilizing frame 4, two sides of a sealing block 7 are fixedly connected with a top of the first spring 6 through a sliding block, the sealing block 7 is movably connected with an inside of the first sliding groove 5 through a sliding block, the extension rod 8 is fixedly connected with two sides of the sealing block 7, an outer side of the extension rod 8 is movably connected with a top of the telescopic push rod 9, a bottom of the telescopic push rod 9 is hinged with a top of an electric wrench 11, the second sliding groove 10 is disposed on an inside of the stabilizing frame 4, and the electric wrench 11 is slidably connected with an inside of the second sliding groove 10 through a sliding block.
Preferably, in this embodiment, during the use, when the condition of seepage appears in certain department of interface position of pipeline 1, can produce white fog after the vapor in the casing inside air that makes up through hydrochloric acid and protective housing 3 and fixed shell 2 this moment and combine, the white fog that produces can be diffused in the casing inside that protective housing 3 and fixed shell 2 make up, after white fog and gas detection module 12 contact, gas detection module 12 finds out hydrochloric acid and has appeared leaking after detecting white fog this moment, gas detection module 12 controls rotary device and drives clamping jaw 13 and open to the outside after rotating to the outside, make clamping jaw 13 unable fixed extension rod 8, sealing block 7 is to the inboard side motion at first spout 5 under the contraction of first spring 6, sealing block 7 makes sealing plate 16 block up the interface position of pipeline 1 to the inboard side, when inboard sealing block 7 moves to the inboard side, sealing block 7 drives extension rod 8 and moves, extension rod 8 drives electric wrench 11 through the flexible push rod 9 with it and moves at the inside of second spout 10, and then can make electric wrench 11 and fixed pipeline 1 interface bolt contact.
Example four:
as shown in fig. 9 and 10, as a preferred embodiment of the present invention, the airtight assembly includes a movable chamber 14 and a second spring 15, the movable chamber 14 is opened inside the sealing block 7, a top portion of the second spring 15 is fixedly connected inside the movable chamber 14, a bottom portion of the second spring 15 is fixedly connected with an upper surface of a sealing plate 16, and the sealing plate 16 is movably connected inside the movable chamber 14.
The detection assembly comprises a recycling groove 17, a fixed push rod 18, a lever 19 and a lower pressing block 20, wherein the recycling groove 17 is formed in the movable cavity 14, the fixed push rod 18 is hinged to the middle of the upper surface lever 19 of the sealing plate 16 and is rotatably connected to the inside of the movable cavity 14, one end of the lever 19 is rotatably connected with the top of the fixed push rod 18, the lower pressing block 20 is hinged to the other end of the lever 19, and the lower pressing block 20 is movably connected to the inside of the movable cavity 14.
Control assembly includes electric contact groove 21, first magnetic path 22, lifting groove 23, lifting block 24, second magnetic path 25 and electric contact block 26, electric contact groove 21 sets up the bottom at briquetting 20 down, electric contact groove 21 uses power electric connection with the device, first magnetic path 22 fixed connection is at briquetting 20's outer wall lower extreme down, the magnetism of first magnetic path 22 and second magnetic path 25 opposite face is opposite, lifting groove 23 fixed connection is at the upper surface of closing plate 16, lifting block 24 swing joint is in lifting groove 23's inside, second magnetic path 25 fixed connection is in lifting block 24's outer wall upper end, electric contact block 26 fixed connection is at lifting block 24's top.
Preferably, in this embodiment, in use, after the sealing plate 16 contacts hydrochloric acid at a leakage position, and at this time, when the sealing block 7 abuts against the interface of the pipeline 1, the movable cavity 14 is located in a closed space, gas is generated after hydrochloric acid reacts with active metal on the sealing plate 16, when the generated gas is greater than elasticity of the second spring 15, the sealing plate 16 can be pushed towards the inner side of the movable cavity 14 and compresses the second spring 15 under the action of gas extrusion, when the sealing plate 16 moves upwards, the outer end of the lever 19 is pushed by the fixed push rod 18 to move upwards into the recovery groove 17, the inner end of the lever 19 rotates downwards with the hinge point as an axis, the inner end of the lever 19 drives the lower press block 20 to move downwards, meanwhile, the sealing plate 16 drives the lifting block 24 inside the lifting groove 23 to move upwards in the process of moving up to the movable cavity 14, in the process that the lower press block 20 and the lifting block 24 move in the opposite direction, because the first magnetic block 22 and the second magnetic block 25 face each other, when the first magnetic block 22 and the second magnetic block 25 move upwards, the electric wrench can make the electric wrench move downwards to attract the electric wrench to move, so that the electric wrench 20 and the electric wrench 20 move downwards, so that the electric wrench can move downwards when the electric wrench 20 and the electric wrench moves, the electric wrench 20 and the electric wrench move upwards, so that the electric wrench can move downwards, the electric wrench can move, the electric wrench 20 and the electric wrench can move upwards, and the electric wrench 20 can move upwards, and the electric wrench after the electric wrench 20 can move.
The working principle is as follows: under initial condition, gaseous detection module 12 makes clamping jaw 13 carry out the centre gripping fixedly to extension rod 8, make extension rod 8 be in the outside, extension rod 8 makes sealed piece 7 be in the outside of stabilizer 4 and tensile first spring 6, extension rod 8 passes through flexible push rod 9 pulling electric wrench 11 and is in the outside of second spout 10, second spring 15 extends simultaneously and makes sealed board 16 be in the lowest position of activity chamber 14, sealed board 16 makes the outside end of lever 19 down through fixed push rod 18 simultaneously, the medial extremity of lever 19 makes briquetting 20 be in the highest position down, second magnetic path 25 is inhaled to first magnetic path 22 inequality magnetism this moment, elevator 24 is in the lowest position of lift groove 23 under the effect of gravity this moment.
When the pipeline leakage warning device works, when leakage occurs at a certain position of an interface position of the pipeline 1, white fog is generated after water vapor in the air in the shell formed by combining hydrochloric acid and the protective shell 3 and the fixed shell 2 is combined, the generated white fog can diffuse in the shell formed by combining the protective shell 3 and the fixed shell 2, when the white fog is contacted with the gas detection module 12, the gas detection module 12 detects the white fog, then the hydrochloric acid is leaked, meanwhile, because the inside of the gas detection module 12 is provided with the sound production unit and the lighting unit, the sound production unit and the lighting unit can buzz and light through the gas detection module 12, the problem that the interface of a worker is leaked can be warned, at the moment, the gas detection module 12 controls the rotating device to rotate outwards and then drives the clamping jaw 13 to open outwards, and then make clamping jaw 13 unable to fix extension rod 8, sealed piece 7 moves to the inboard at first spout 5 under the shrink effect of first spring 6 this moment, sealed piece 7 makes closing plate 16 carry out the shutoff to the interface position of pipeline 1, when preventing that hydrochloric acid from continuing the seepage problem, also can detect pipeline 1 interface seepage position, can prevent the too much hydrochloric acid of seepage and lead to the problem that causes certain harm to the surrounding environment, when sealed piece 7 moves to the inboard, make extension rod 8 move to the inboard, extension rod 8 drives electric wrench 11 through swing joint's telescopic push rod 9 with it and moves to the inboard in the inside of second spout 10, and then can make the bolt contact of electric wrench 11 and fixed pipeline 1 interface.
At this time, because the active metal sheet is arranged on the surface of the sealing plate 16, when the sealing plate 16 contacts hydrochloric acid at a leakage position and the sealing block 7 abuts against the joint of the pipeline 1, the movable cavity 14 is in a closed space at this time, when hydrochloric acid reacts with the active metal on the sealing plate 16, gas is generated, when the generated gas is greater than the elasticity of the second spring 15, the sealing plate 16 can be pushed towards the inner side of the movable cavity 14 under the action of gas extrusion and compresses the second spring 15, when the sealing plate 16 moves upwards, the outer end of the lever 19 is pushed by the fixed push rod 18 to move upwards to the inside of the recovery groove 17, the inner end of the lever 19 rotates downwards with the hinge point as an axis, the inner end of the lever 19 drives the lower pressing block 20 to move downwards, and simultaneously the sealing plate 16 drives the lifting block 24 inside the lifting groove 23 to move upwards in the process of moving upwards to the inside of the movable cavity 14, and then the lower press block 20 and the lifting block 24 can be close to each other by the short-distance upward movement of the sealing plate 16, so that the subsequent control can be effectively contacted, and meanwhile, a small amount of gas can be needed for control, so as to prevent the problem that the quick contact cannot be realized and the response cannot be timely caused, in the process of the opposite movement of the lower press block 20 and the lifting block 24, because the opposite facing magnetism of the first magnetic block 22 and the second magnetic block 25 is opposite, at the moment, the first magnetic block 22 and the second magnetic block 25 are close to each other, when the first magnetic block 22 and the second magnetic block 25 move within the magnetic attraction range, the first magnetic block 22 magnetically attracts the second magnetic block 25 to enable the lifting block 24 to move towards the lower press block 20 in the lifting groove 23, the lifting block 24 drives the electrical contact block 26 to electrically contact with the electrical contact groove 21, because the electrical contact groove 21 is electrically connected with a power supply, after the electrical contact block 26 is electrically contacted with the electrical contact groove 21, electric feeler block 26 circular telegram, because electric spanner 11 and electric feeler block 26 electric connection, electric feeler block 26 makes electric spanner 11 circular telegram, electric spanner 11 has contacted with the bolt of 1 kneck of pipeline this moment, can screw up the bolt after electric spanner 11 circular telegram starts, and then can realize the effect to the preliminary fixed of 1 interface position of pipeline, prevent that the problem of seepage on a large scale from appearing in hydrochloric acid, and then reduce the problem of the chemical industry accident that the hydrochloric acid seepage leads to, improve the security of hydrochloric acid preparation facilities in the preparation hydrochloric acid process.
It is specifically noted that the components in the present application are all common standard components or components well known to those skilled in the art, which effectively solve the problems of the electronic-grade hydrochloric acid preparation method and the equipment thereof.
Although several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in other various ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the scope of equivalents thereof.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims (5)

1. The electronic-grade hydrochloric acid preparation equipment is characterized by comprising a pipeline (1), wherein a fixed shell (2) is fixedly connected to the outer wall of the pipeline (1), a protective shell (3) is fixedly connected to the outer side of the fixed shell (2) through a bolt, a stabilizing frame (4) is fixedly connected to the inner wall of the protective shell (3), a sealing block (7) is arranged inside the stabilizing frame (4), an electric wrench (11) is arranged on the inner side of the stabilizing frame (4), a pushing assembly is arranged at the joint of the sealing block (7) and a clamping jaw (13), a gas detection module (12) is fixedly connected to the inner wall of the protective shell (3), the clamping jaw (13) is hinged to the inner side of the gas detection module (12), a plugging detection mechanism is arranged inside the sealing block (7), the plugging detection mechanism comprises an airtight assembly, a detection assembly and a control assembly, and a sealing plate (16) is arranged on the airtight assembly;
the push assembly comprises a first sliding groove (5), a first spring (6), an extension rod (8), a telescopic push rod (9) and a second sliding groove (10), the first sliding groove (5) is formed in the inner wall of the stabilizing frame (4), the bottom of the first spring (6) is fixedly connected with the inside of the stabilizing frame (4), two sides of the sealing block (7) are fixedly connected with the top of the first spring (6) through sliding blocks, the sealing block (7) is movably connected to the inside of the first sliding groove (5) through sliding blocks, the extension rod (8) is fixedly connected to two sides of the sealing block (7), the outside of the extension rod (8) is movably connected with the top of the telescopic push rod (9), the bottom of the telescopic push rod (9) is hinged to the top of an electric wrench (11), the second sliding groove (10) is formed in the inner side of the stabilizing frame (4), and the electric wrench (11) is slidably connected to the inside of the second sliding groove (10) through sliding blocks;
the airtight assembly comprises a movable cavity (14) and a second spring (15), the movable cavity (14) is arranged inside the sealing block (7), the top of the second spring (15) is fixedly connected inside the movable cavity (14), the bottom of the second spring (15) is fixedly connected with the upper surface of the sealing plate (16), and the sealing plate (16) is movably connected inside the movable cavity (14); the inner side surface of the sealing plate (16) is provided with active metal capable of reacting with hydrochloric acid;
the detection assembly comprises a recovery groove (17), a fixed push rod (18), a lever (19) and a lower pressing block (20), the recovery groove (17) is formed in the movable cavity (14), the fixed push rod (18) is hinged to the upper surface of the sealing plate (16), the middle of the lever (19) is rotatably connected to the inside of the movable cavity (14), one end of the lever (19) is rotatably connected with the top of the fixed push rod (18), the lower pressing block (20) is hinged to the other end of the lever (19), and the lower pressing block (20) is movably connected to the inside of the movable cavity (14);
control assembly includes electric touch groove (21), first magnetic path (22), lift groove (23), elevator (24), second magnetic path (25) and electric touch multitouch (26), electric touch groove (21) sets up the bottom at elevator (20), first magnetic path (22) fixed connection is at the outer wall lower extreme of elevator (20) down, elevator (23) fixed connection is at the upper surface of closing plate (16), elevator (24) swing joint is in the inside of lift groove (23), second magnetic path (25) fixed connection is in the outer wall upper end of elevator (24), electric touch multitouch (26) fixed connection is at the top of elevator (24).
2. The electronic-grade hydrochloric acid preparation equipment according to claim 1, wherein the gas detection module (12) is electrically connected with a device using a power supply, and a sounding unit and a lighting unit for reminding are arranged inside the gas detection module (12).
3. The electronic-grade hydrochloric acid production facility of claim 1, wherein the electronic-grade hydrochloric acid production facility is used for production of electronic-grade hydrochloric acid, and wherein the electronic-grade hydrochloric acid production method comprises the steps of: s1, carrying out electrolytic separation on salt water or a chloride ion salt solution, absorbing chlorine and hydrogen generated by electrolysis, mixing the collected chlorine and hydrogen, and igniting to obtain hydrogen chloride gas; s2, introducing the hydrogen chloride gas into an activated carbon tower to absorb impurities, and absorbing free chlorine and impurities in the hydrogen chloride gas through the activated carbon tower; s3, introducing the purified hydrogen chloride gas into an absorption tower of a hydrochloric acid system, performing spray absorption by using absorption liquid, and introducing high-purity industrial hydrochloric acid into a raw material storage tank; s4, pumping high-purity industrial hydrochloric acid into a rectifying tower kettle from a raw material storage tank through a raw material input pump, heating the bottom of the rectifying tower kettle through a heating device, so that the high-purity industrial hydrochloric acid at the bottom of the rectifying tower kettle is heated and evaporated, the evaporated high-purity industrial hydrochloric acid rises and passes through a tower plate inside the rectifying tower kettle, the temperature of the top of the rectifying tower kettle is lower relative to the temperature of the bottom, the upward evaporated hydrochloric acid vapor can be condensed, the condensed hydrochloric acid liquid flows downwards and contacts with the upward high-temperature evaporated hydrochloric acid vapor, and the condensed hydrochloric acid liquid is heated to become steam hydrochloric acid upward; s5, simultaneously, part of the steam hydrochloric acid contacts with the condensed hydrochloric acid liquid with a lower temperature and then is condensed to flow downwards, the condensed hydrochloric acid flowing downwards flows towards the inside of the reboiler, steam is generated by heating the part of the condensed hydrochloric acid through the reboiler and rises towards the inside of the rectifying tower kettle, the reboiler and the bottom of the rectifying tower kettle discharge heavy hydrochloric acid liquid to a first finished product tank, and the collected hydrochloric acid can be used for industrial grade; s6, the steam hydrochloric acid evaporated upwards enters the interior of the condenser to be condensed again, the condensed hydrochloric acid flows into the rectifying tower kettle again, the condensed hydrochloric acid enters the interior of the condenser after being rectified again, the light component hydrochloric acid solution is collected through the second finished product tank after part of the steam hydrochloric acid is condensed through the condenser, and the collected hydrochloric acid can be used for electronic grade.
4. The electronic grade hydrochloric acid preparation equipment according to claim 3, wherein the raw material input pump is pumped into the interior of the rectifying tower from the middle end of the outer wall of the rectifying tower kettle.
5. An electronic grade hydrochloric acid production apparatus as claimed in claim 3, wherein said trays are alternately arranged inside the rectifying tower still, and the middle part of said trays is provided with an opening for the upward rise of the steam hydrochloric acid.
CN202211150110.7A 2022-09-21 2022-09-21 Preparation method and equipment of electronic-grade hydrochloric acid Active CN115477283B (en)

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CN102060271B (en) * 2011-02-21 2013-01-23 上海正帆科技有限公司 Method for producing electronic grade hydrochloric acid
US9366476B2 (en) * 2014-01-29 2016-06-14 Praxair Technology, Inc. Condenser-reboiler system and method with perforated vent tubes
CN109650340B (en) * 2018-12-26 2021-01-15 江阴江化微电子材料股份有限公司 Production method of electronic grade hydrochloric acid
CN217328439U (en) * 2021-12-03 2022-08-30 鹤壁市德天电气有限公司 Car pipeline sealing washer structure
CN217272798U (en) * 2022-01-18 2022-08-23 史运辉 Mechanical plugging device for gas pipeline
CN114655928A (en) * 2022-02-25 2022-06-24 江苏捷创新材料有限责任公司 Preparation method of electronic-grade hydrochloric acid

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