CN109052323B - Hydrochloric acid recovery, concentration and regeneration method - Google Patents
Hydrochloric acid recovery, concentration and regeneration method Download PDFInfo
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- CN109052323B CN109052323B CN201811052976.8A CN201811052976A CN109052323B CN 109052323 B CN109052323 B CN 109052323B CN 201811052976 A CN201811052976 A CN 201811052976A CN 109052323 B CN109052323 B CN 109052323B
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- 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
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- 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
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- 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
- B01D53/1425—Regeneration of liquid absorbents
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
- B01D53/1456—Removing acid components
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2257/00—Components to be removed
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- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
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Abstract
The invention belongs to the technical field of waste hydrochloric acid recovery and concentration, and particularly relates to a hydrochloric acid recovery, concentration and regeneration method, which comprises the following steps: filtering the waste hydrochloric acid to be recovered to remove impurities in the waste hydrochloric acid; preheating the waste hydrochloric acid after impurity removal and performing multi-effect evaporation to prepare hydrogen chloride gas; directly introducing hydrogen chloride gas into a hydrochloric acid recovery, concentration and regeneration device filled with dilute hydrochloric acid for concentration; carrying out circulating cooling on the concentrated hydrochloric acid and finally recovering; adding anhydrous sodium sulfate into the recovered hydrochloric acid for drying, and concentrating the hydrochloric acid again to reach the required concentration; the method comprises the steps of introducing hydrogen chloride gas into a hydrochloric acid recovery, concentration and regeneration device, and fully melting the hydrogen chloride gas into hydrochloric acid to improve the concentration of the hydrochloric acid; the hydrochloric acid in the hydrochloric acid recovery, concentration and regeneration device is circularly cooled to improve the solubility of hydrogen chloride gas in the hydrochloric acid and the concentration of the hydrochloric acid, so that the waste hydrochloric acid can be recycled.
Description
Technical Field
The invention belongs to the technical field of waste hydrochloric acid recovery and concentration, and particularly relates to a hydrochloric acid recovery, concentration and regeneration method.
Background
Hydrochloric acid is a common chemical product, is widely applied to the processes of chemical industry, metallurgy, metal surface treatment, rare earth production and the like, and simultaneously generates a large amount of dilute waste hydrochloric acid, for example, in the production of pesticides, medicines and dyes, hydrochloric acid-containing waste water generated every year can not be counted, and if effective measures are not taken to treat the dilute waste hydrochloric acid, the pollution, damage and resource waste to the environment are very remarkable. The treatment and recycling of the dilute waste hydrochloric acid are a great problem in wastewater treatment, and along with the increase of the national environmental pollution control strength, the shortage of resources and the improvement of resource value, the recycling of the dilute waste hydrochloric acid becomes a necessary trend for development.
At present, methods for recycling dilute waste hydrochloric acid mainly comprise an electrodialysis method, a concentration distillation method, an extraction method and a method for producing hydrochloride. CN1562732A provides a method for preparing concentrated hydrochloric acid by semi-continuous extractive distillation of dilute waste hydrochloric acid, which comprises the steps of using sulfuric acid as an extracting agent to carry out semi-continuous extractive distillation on the dilute waste hydrochloric acid, wherein the molar concentration of the sulfuric acid in a rectifying kettle is 25.0-32.3%, the kettle temperature is 155-200 ℃, adding the dilute hydrochloric acid under the boiling state of kettle liquid, and obtaining concentrated hydrochloric acid after effluent is gaseous hydrogen chloride and is absorbed by the dilute hydrochloric acid in a parallel flow manner. Therefore, the method is improved, and the preparation of concentrated hydrochloric acid and concentrated hydrochloric acid tends to be simple.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides a hydrochloric acid recovery, concentration and regeneration method, and aims to improve the hydrochloric acid recovery, concentration and regeneration method so that waste hydrochloric acid can be recovered and regenerated. The hydrogen chloride gas prepared by preheating and multi-effect evaporation is introduced into a hydrochloric acid recovery, concentration and regeneration device, so that the hydrogen chloride gas is fully blended into the hydrochloric acid to improve the concentration of the hydrochloric acid and the recovery and regeneration efficiency of the hydrochloric acid; the hydrochloric acid in the hydrochloric acid recovery, concentration and regeneration device is circularly cooled to improve the solubility of hydrogen chloride gas in the hydrochloric acid and improve the concentration of the hydrochloric acid; the anhydrous sodium sulfate is added into the hydrochloric acid to absorb the water in the hydrochloric acid, so that the hydrochloric acid is concentrated, the concentration of the hydrochloric acid is improved, and the waste hydrochloric acid can be recycled.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a hydrochloric acid recovery, concentration and regeneration method, which comprises the following steps:
s1: filtering the waste hydrochloric acid to be recovered by using a concentrated hydrochloric acid filter to remove impurities in the waste hydrochloric acid;
s2: preheating the waste hydrochloric acid from which impurities are removed in the S1 and performing multi-effect evaporation to prepare hydrogen chloride gas, preheating the waste hydrochloric acid by using a preheater, evaporating the waste hydrochloric acid by using a multi-effect evaporator, wherein the energy of the preheater is provided by waste heat generated by the multi-effect evaporator;
s3: directly introducing hydrogen chloride gas evaporated by the multi-effect evaporator in the S2 into a hydrochloric acid recovery, concentration and regeneration device filled with dilute hydrochloric acid, concentrating the hydrochloric acid, and controlling the concentration time according to the concentration required to be increased by the hydrochloric acid until the hydrogen chloride gas is difficult to be dissolved in the hydrochloric acid;
s4: circularly cooling the concentrated hydrochloric acid in the hydrochloric acid recovery, concentration and regeneration device in the S3, circularly cooling the hydrochloric acid by the cooling device and the circulating pump until the hydrochloric acid in the hydrochloric acid recovery, concentration and regeneration device reaches a specified concentration, stopping concentration, and recovering the hydrochloric acid; the hydrochloric acid is cooled because the hydrogen chloride is dissolved in water to release heat, and the heat release can reduce the solubility of the hydrogen chloride gas in the hydrochloric acid;
s5: adding anhydrous sodium sulfate into the hydrochloric acid recovered in S4, drying, allowing the anhydrous sodium sulfate to absorb water in the hydrochloric acid, and concentrating the hydrochloric acid again to obtain the required concentration;
the hydrochloric acid recovery, concentration and regeneration device in the S3 and S4 comprises a recovery box, an air filling module, an air retention plate, an air release module I and a turbulence module, wherein a liquid inlet pipe is arranged at one side part of the recovery box, an air inlet pipe is arranged at the other side part of the recovery box, the lower part of the recovery box is used for containing hydrochloric acid to be concentrated, and a compression cylinder is arranged at the upper end of the recovery box; the first air discharging module is arranged at the bottom of the recycling box, the first air discharging module is communicated with the compression cylinder through a first pipeline, and a first one-way air outlet valve is arranged on the first pipeline; the gas filling module is positioned at the lower end of the compression cylinder, the gas filling module rotates to intermittently push the compression cylinder, so that the compression cylinder conveys gas to the first gas discharging module to enable the first gas discharging module to spray out hydrogen chloride gas, and the gas filling module is used for filling the hydrogen chloride gas at the upper part of the recovery box into hydrochloric acid at the lower part of the recovery box to enable the hydrochloric acid to be concentrated; the gas retention plate is positioned above the first gas release module and fixedly connected with the side wall of the recovery box, and the gas retention plate is used for prolonging the retention time of hydrogen chloride gas in hydrochloric acid and promoting the hydrogen chloride gas to be dissolved in the hydrochloric acid; the spoiler is positioned above the gas retention plate and is used for promoting the flow of hydrochloric acid in the recovery tank; wherein the content of the first and second substances,
the air filling module comprises a motor, a main shaft, an elliptical cylinder, inclined plates, partition plates and honeycomb balls, wherein the main shaft is provided with at least six inclined plates, the inclined plates are tangent to the curved surface of the main shaft, the main shaft is fixedly connected with the elliptical cylinder through the inclined plates, and the main shaft is positioned at the rotation center of the elliptical cylinder; a plurality of partition plates are arranged on the main shaft, the partition plates are perpendicular to the main shaft, and the elliptic cylinder is uniformly divided into a plurality of sections by the partition plates; the wall of the elliptic cylinder is fully provided with liquid leakage holes, and one third or two fifths of the lower part of the elliptic cylinder is positioned below the liquid level of the hydrochloric acid; the honeycomb balls are arranged in the elliptical cylinder, honeycomb holes are fully distributed on the honeycomb balls, the honeycomb balls are positioned at the bottommost end of the elliptical cylinder and are submerged by hydrochloric acid, and the honeycomb balls are provided with a plurality of honeycomb balls and are positioned between two adjacent inclined plates; the motor is fixed on the outer side wall of the recovery box and connected with the main shaft, and the motor is used for driving the elliptical cylinder to rotate so as to enable the honeycomb ball to roll along the inclined plate and the inner wall of the elliptical cylinder, and the honeycomb ball brings hydrogen chloride gas into hydrochloric acid; the two adjacent inclined plates, the inner wall of the elliptic cylinder and the outer wall of the main shaft form a triangle-like space, and the elliptic cylinder rotates to enable the honeycomb balls to roll on the inner wall in the triangle-like space; most corrosion-resistant parts in the whole hydrochloric acid recovery, concentration and regeneration device are made of polypropylene, and the polypropylene can resist corrosion of various organic solvents and acid and alkali. When the device works, hydrochloric acid is filled into the recovery box from the liquid inlet pipe, the liquid level of the hydrochloric acid is located between one fourth and one third of the lower portion of the elliptical cylinder, after the hydrochloric acid is filled, the liquid inlet pipe is closed, hydrogen chloride gas is continuously introduced into the recovery box from the air inlet pipe, after the recovery box is filled with the hydrogen chloride gas, the motor is started, the motor drives the elliptical cylinder to rotate through the main shaft, the elliptical cylinder rotates to raise the hydrochloric acid, the hydrochloric acid is splashed in the hydrogen chloride gas, the hydrogen chloride gas is promoted to be melted into the hydrochloric acid, the honeycomb ball located at the bottom end of the elliptical cylinder is filled with the hydrochloric acid, when the elliptical cylinder rotates, the honeycomb ball leaves the hydrochloric acid, the hydrochloric acid on the honeycomb ball is splashed downwards, the hydrogen chloride gas and the hydrochloric acid are promoted to be fused, when the honeycomb ball impacts the inner wall of the inclined plate or the elliptical cylinder, vibration of the honeycomb ball and the elliptical cylinder is, the gaps in the honeycomb ball are quickly occupied by the hydrogen chloride gas, and when the honeycomb ball rotates along with the elliptical cylinder and falls into the hydrochloric acid, the hydrogen chloride gas is filled into the hydrochloric acid by the honeycomb ball, so that the hydrogen chloride gas is effectively promoted to be merged into the hydrochloric acid, and the concentration of the hydrochloric acid is improved.
The inclined plate is provided with an elastic cellular board, the elastic cellular board is positioned at the end part of the inclined plate and close to the inner wall of the elliptic cylinder, and the elastic cellular board comprises a first board and a first spring; honeycomb holes are fully distributed on the first plate; the first spring is fixed on the inclined plate and used for elastically supporting the first spring. When the device works, the elliptical cylinder rotates to drive the honeycomb balls to rotate, so that the honeycomb balls roll on the two adjacent inclined plates and the inner wall of the elliptical cylinder, when the honeycomb balls are positioned at the bottom end of the elliptical cylinder, the honeycomb balls and the elastic honeycomb plates adjacent to the honeycomb balls are just soaked by hydrochloric acid, when the honeycomb balls are lifted upwards from below under the rotation of the elliptical cylinder, the honeycomb balls positioned on the inner wall of the bottom of the elliptical cylinder roll along the inner wall of the elliptical cylinder, and when the elliptical cylinder continues to rotate, the honeycomb balls directly impact the elastic honeycomb plates to vibrate the honeycomb balls, the elastic honeycomb plates and the elliptical cylinder, so that the hydrochloric acid attached to the honeycomb balls, the elastic honeycomb plates and the elliptical cylinder is vibrated, the fusion of the hydrochloric acid and hydrogen chloride gas is promoted, and the concentration of the hydrochloric acid is favorably improved; at the same time, the hydrogen chloride gas re-enters the honeycomb balls and the elastic honeycomb panel.
The compression cylinder comprises a compression plate, a first return spring and a first one-way air inlet valve, and the compression plate is in sliding fit with the inner wall of the recovery box; the first return spring is positioned between the compression plate and the upper inner wall of the recovery box and is used for returning the extruded compression plate; the one-way air inlet valve I is arranged on the compression plate and used for enabling hydrogen chloride gas in the recovery box to enter the compression cylinder in a one-way mode. During operation, the elliptical cylinder rotates, the elliptical cylinder pushes the compression plate intermittently, the hydrogen chloride gas in the compression plate is compressed and conveyed to the first gas release module for gas release, and the first gas release module is located in the hydrochloric acid, so that the released hydrogen chloride gas is introduced into the hydrochloric acid, the fusion of the hydrogen chloride gas and the hydrochloric acid is promoted, and the concentration of the hydrochloric acid is improved.
The air bleeding module I comprises a hollow plate and a hollow cylinder, two end parts of the hollow plate are fixedly connected with the inner wall of the recycling box, and the side wall of the hollow plate is in non-contact with the inner wall of the recycling box; the hollow cylinder is vertically fixed on the hollow plate and communicated with the hollow plate, and the hollow cylinder is fully provided with a first air hole. During operation, the compression cylinder leads hydrogen chloride gas into the first air release module through the first pipeline, so that the hollow plate and the hollow cylinder which are submerged by hydrochloric acid are under the action of the hydrogen chloride gas, the hollow cylinder firstly sprays hydrochloric acid outwards and then sprays hydrogen chloride gas outwards, the hydrogen chloride gas is squeezed to the hydrochloric acid in the hydrochloric acid spraying process, the hydrochloric acid and the hydrogen chloride gas are well fused, after the hydrogen chloride gas is sprayed out of the hollow cylinder, the hydrogen chloride gas enters the hydrochloric acid, the fusion of the hydrogen chloride gas and the hydrochloric acid is promoted, and the concentration of the hydrochloric acid is improved.
The lower end of the first air discharging module is provided with a second air discharging module, and the second air discharging module and the air discharging module have the same structural shape; the main shaft is hollow, a through hole penetrating through the inside and the outside of the main shaft is formed in the main shaft, and a second pipeline is arranged between the hollow main shaft and the second air discharging module; a one-way air valve II is arranged at the through hole; the one-way air valve II is used for enabling hydrogen chloride gas outside the main shaft to enter the hollow main shaft in a one-way mode through the through hole; the pipeline II is used for communicating the main shaft with the second air discharging module; the inclined plates are provided with reset cylinders, one ends of the reset cylinders are provided with push plates, the other ends of the reset cylinders, the two adjacent inclined plates and the outer wall of the main shaft form a gas storage cavity, and the reset cylinders are communicated with the gas storage cavity; the gas storage cavity is communicated with the through hole. During operation, the honeycomb ball rolls in oval section of thick bamboo, when the honeycomb ball along swash plate striking push pedal messenger restore to the throne cylinder in hydrogen chloride quilt compressed, compressed hydrogen chloride gas passes through one-way air valve two and the through-hole gets into in the hollow main shaft, along with constantly having the cylinder that restores to the throne to fill into hydrogen chloride gas in to the main shaft, make the hydrogen chloride gas in the main shaft get into in gassing module two through pipeline two, make gassing module two constantly release hydrogen chloride gas in hydrochloric acid, be favorable to improving the fusion of hydrogen chloride gas and hydrochloric acid, improve the concentration of hydrochloric acid.
The side wall of the gas retention plate is matched with the inner wall of the recovery box, the gas retention plate is fixed on the inner wall of the recovery box, a first circular platform hole with a small upper end and a large lower end is formed in the gas retention plate, and needle hair is arranged in the first circular platform hole; the needle hairs are used for storing bubbles in the hydrochloric acid so that the bubbles in the hydrochloric acid are not easy to overflow. When the hydrogen chloride gas generator works, a large amount of hydrogen chloride gas flows upwards from the lower part of the gas retention plate, and when the hydrogen chloride gas passes through the gas retention plate, part of the hydrogen chloride gas is stored by the needle hair at the gas retention plate, so that the hydrogen chloride gas can be promoted to be blended into hydrochloric acid, and the concentration of the hydrochloric acid can be improved.
The spoiler module comprises a spoiler, a bracket and an impeller, the side wall of the spoiler is matched with the inner wall of the recovery box, the spoiler is fixed on the inner wall of the recovery box, and a plurality of circular platform holes II with small upper ends and large lower ends are formed in the spoiler; the bracket is fixed at the upper end of the spoiler and is positioned beside the circular table hole; the impeller is located on the support, the impeller is connected with the support in a rotating mode, and the impeller is located at the upper end of the second circular table hole. When the vortex flow plate works, a large amount of hydrogen chloride gas below the vortex flow module floats upwards, and when the hydrogen chloride gas passes through the vortex flow plate, the hydrogen chloride gas is dispersed and changed into accumulation at the second round hole, so that the hydrogen chloride gas overflowing from the small end of the second round hole directly impacts the impeller, the rotation of the impeller is promoted, the rotating impeller promotes the flow of hydrochloric acid, the fusion of the hydrochloric acid and the hydrogen chloride gas is favorably improved, and the concentration of the hydrochloric acid is improved.
The invention has the following beneficial effects:
1. the hydrogen chloride gas prepared by preheating and multi-effect evaporation is introduced into a hydrochloric acid recovery, concentration and regeneration device, so that the hydrogen chloride gas is fully blended into the hydrochloric acid to improve the concentration of the hydrochloric acid and the recovery and regeneration efficiency of the hydrochloric acid; the hydrochloric acid in the hydrochloric acid recovery, concentration and regeneration device is circularly cooled to improve the solubility of hydrogen chloride gas in the hydrochloric acid and improve the concentration of the hydrochloric acid; the anhydrous sodium sulfate is added into the hydrochloric acid to absorb the water in the hydrochloric acid, so that the hydrochloric acid is concentrated, the concentration of the hydrochloric acid is improved, and the waste hydrochloric acid can be recycled.
2. The hydrochloric acid is lifted by the rotation of the elliptic cylinder, so that the hydrochloric acid is splashed in the hydrogen chloride gas, the hydrochloric acid is splashed in the hydrogen chloride gas by the rolling of the honeycomb ball, the honeycomb ball impacts the inclined plate or the inner wall of the elliptic cylinder, the vibration of the honeycomb ball and the elliptic cylinder is promoted, the hydrochloric acid on the honeycomb ball and the elliptic cylinder falls more cleanly, the fusion of the hydrogen chloride gas and the hydrochloric acid is promoted, and the concentration of the hydrochloric acid and the fusion efficiency of the hydrogen chloride gas and the hydrochloric acid are improved; the hydrogen chloride gas is filled into the hydrochloric acid through the honeycomb ball, so that the hydrogen chloride gas is effectively promoted to be dissolved into the hydrochloric acid, and the concentration of the hydrochloric acid is improved.
3. The compression plate is pushed and extruded through the rotation of the elliptical cylinder, so that hydrogen chloride gas in the compression plate is compressed and conveyed to the first gas release module for gas release, and the first gas release module is positioned in hydrochloric acid, so that the released hydrogen chloride gas is introduced into the hydrochloric acid, the fusion of the hydrogen chloride gas and the hydrochloric acid is promoted, the concentration of the hydrochloric acid is improved, and the recovery and regeneration efficiency of waste hydrochloric acid is improved.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic view of the hydrochloric acid recovery, concentration and regeneration apparatus according to the present invention;
FIG. 3 is a schematic view of the gas filling module structure of the present invention;
in the figure: the recycling box comprises a recycling box 1, a liquid inlet pipe 11, an air inlet pipe 12, a compression cylinder 13, a compression plate 131, a first return spring 132, a first one-way air inlet valve 133, a first pipeline 14, a first one-way air outlet valve 15, an air filling module 2, a motor 21, a main shaft 22, a through hole 221, an elliptical cylinder 23, an inclined plate 24, a honeycomb ball 25, an elastic honeycomb plate 26, an air retaining plate 3, a first circular truncated cone hole 31, needle bristles 32, a first air discharging module 4, a hollow plate 41, a hollow cylinder 42, a turbulence module 5, a spoiler 51, a second circular truncated cone hole 511, an impeller 52, a second air discharging module 6, a second pipeline 61, a return cylinder 63, a push plate 631 and an air storing.
Detailed Description
A hydrochloric acid recovery, concentration and regeneration method according to the present invention will be described below with reference to fig. 1 to 3.
As shown in fig. 1 to fig. 3, the method for recovering, concentrating and regenerating hydrochloric acid according to the present invention comprises the following steps:
s1: filtering the waste hydrochloric acid to be recovered by using a concentrated hydrochloric acid filter to remove impurities in the waste hydrochloric acid;
s2: preheating the waste hydrochloric acid from which impurities are removed in the S1 and performing multi-effect evaporation to prepare hydrogen chloride gas, preheating the waste hydrochloric acid by using a preheater, evaporating the waste hydrochloric acid by using a multi-effect evaporator, wherein the energy of the preheater is provided by waste heat generated by the multi-effect evaporator;
s3: directly introducing hydrogen chloride gas evaporated by the multi-effect evaporator in the S2 into a hydrochloric acid recovery, concentration and regeneration device filled with dilute hydrochloric acid, concentrating the hydrochloric acid, and controlling the concentration time according to the concentration required to be increased by the hydrochloric acid until the hydrogen chloride gas is difficult to be dissolved in the hydrochloric acid;
s4: circularly cooling the concentrated hydrochloric acid in the hydrochloric acid recovery, concentration and regeneration device in the S3, circularly cooling the hydrochloric acid by the cooling device and the circulating pump until the hydrochloric acid in the hydrochloric acid recovery, concentration and regeneration device reaches a specified concentration, stopping concentration, and recovering the hydrochloric acid; the hydrochloric acid is cooled because the hydrogen chloride is dissolved in water to release heat, and the heat release can reduce the solubility of the hydrogen chloride gas in the hydrochloric acid;
s5: adding anhydrous sodium sulfate into the hydrochloric acid recovered in S4, drying, allowing the anhydrous sodium sulfate to absorb water in the hydrochloric acid, and concentrating the hydrochloric acid again to obtain the required concentration;
the hydrochloric acid recovery, concentration and regeneration device in the S3 and S4 comprises a recovery box 1, an air filling module 2, an air retention plate 3, an air release module I4 and a turbulence module 5, wherein a liquid inlet pipe 11 is arranged at one side part of the recovery box 1, an air inlet pipe 12 is arranged at the other side part of the recovery box 1, the lower part of the recovery box 1 is used for containing hydrochloric acid to be concentrated, and a compression cylinder 13 is arranged at the upper end of the recovery box 1; the first deflation module 4 is arranged at the bottom of the recovery box 1, the first deflation module 4 is communicated with the compression cylinder 13 through a first pipeline 14, and the first pipeline 14 is provided with a first one-way air outlet valve 15; the gas filling module 2 is positioned at the lower end of the compression cylinder 13, the gas filling module 2 rotates to intermittently push the compression cylinder 13, so that the compression cylinder 13 transmits gas to the first gas discharging module 4 to enable the first gas discharging module 4 to spray hydrogen chloride gas, and the gas filling module 2 is used for filling the hydrogen chloride gas at the upper part of the recovery box 1 into hydrochloric acid at the lower part of the recovery box 1 to enable the hydrochloric acid to be concentrated; the gas retention plate 3 is positioned above the first gas release module 4, the gas retention plate 3 is fixedly connected with the side wall of the recovery box 1, and the gas retention plate 3 is used for prolonging the retention time of hydrogen chloride gas in hydrochloric acid and promoting the hydrogen chloride gas to be dissolved in the hydrochloric acid; the spoiler 51 is positioned above the gas retention plate 3, and the spoiler 51 is used for promoting the flow of the hydrochloric acid in the recovery tank 1; wherein the content of the first and second substances,
the gas filling module 2 comprises a motor 21, a main shaft 22, an elliptical cylinder 23, inclined plates 24, partition plates and honeycomb balls 25, wherein the main shaft 22 is provided with at least six inclined plates 24, the inclined plates 24 are tangent to the curved surface of the main shaft 22, the main shaft 22 is fixedly connected with the elliptical cylinder 23 through the inclined plates 24, and the main shaft 22 is positioned at the rotation center of the elliptical cylinder 23; a plurality of partition plates are arranged on the main shaft 22 and are vertical to the main shaft 22, and the oval cylinders 23 are uniformly divided into a plurality of sections by the partition plates; the wall of the elliptical cylinder 23 is fully provided with liquid leakage holes, and one third or two fifths of the lower part of the elliptical cylinder 23 is positioned below the liquid level of hydrochloric acid; the honeycomb balls 25 are arranged in the elliptical cylinder 23, honeycomb holes are distributed in the honeycomb balls 25, the honeycomb balls 25 are positioned at the bottommost end of the elliptical cylinder 23 and are submerged by hydrochloric acid, a plurality of honeycomb balls 25 are arranged, and the honeycomb balls 25 are positioned between two adjacent inclined plates 24; the motor 21 is fixed on the outer side wall of the recovery box 1, the motor 21 is connected with the main shaft 22, and the motor 21 is used for driving the elliptical cylinder 23 to rotate so as to enable the honeycomb ball 25 to roll along the inclined plate 24 and the inner wall of the elliptical cylinder 23, so that the honeycomb ball 25 brings hydrogen chloride gas into hydrochloric acid; the two adjacent inclined plates 24, the inner wall of the elliptical cylinder 23 and the outer wall of the main shaft 22 form a triangle-like space, and the elliptical cylinder 23 rotates to enable the honeycomb ball 25 to roll on the inner wall in the triangle-like space; wherein the elliptical cylinder 23 rotates counterclockwise according to the position of fig. 3; most corrosion-resistant parts in the whole hydrochloric acid recovery, concentration and regeneration device are made of polypropylene, and the polypropylene can resist corrosion of various organic solvents and acid and alkali. When the device works, hydrochloric acid is filled into the recovery box 1 from the liquid inlet pipe 11, the liquid level of the hydrochloric acid is located between one fourth and one third of the lower part of the elliptical cylinder 23, after the hydrochloric acid is filled, the liquid inlet pipe 11 is closed, hydrogen chloride gas is continuously introduced into the recovery box 1 from the air inlet pipe 12, after the recovery box 1 is filled with the hydrogen chloride gas, the motor 21 is started, the motor 21 drives the elliptical cylinder 23 to rotate through the main shaft 22, the elliptical cylinder 23 rotates to raise the hydrochloric acid, the hydrochloric acid is splashed in the hydrogen chloride gas, the hydrogen chloride gas is promoted to be melted into the hydrochloric acid, the honeycomb ball 25 located at the bottom end of the elliptical cylinder 23 is filled with the hydrochloric acid, when the elliptical cylinder 23 rotates, the honeycomb ball 25 is separated from the hydrochloric acid, the hydrochloric acid on the honeycomb ball 25 is also splashed down, the hydrogen chloride gas and the hydrochloric acid are promoted to be melted, when the honeycomb ball 25 impacts the inclined plate 24 or the inner wall of, the hydrochloric acid on the honeycomb ball 25 and the elliptical cylinder 23 can fall more cleanly, meanwhile, the gap in the honeycomb ball 25 is rapidly occupied by the hydrogen chloride gas, when the honeycomb ball 25 rotates along with the elliptical cylinder 23 and falls into the hydrochloric acid, the honeycomb ball 25 fills the hydrogen chloride gas into the hydrochloric acid, the hydrogen chloride gas is effectively promoted to be merged into the hydrochloric acid, and the concentration of the hydrochloric acid is improved.
As shown in fig. 2 and 3, an elastic cellular board 26 is arranged on the inclined plate 24, the elastic cellular board 26 is located at the end of the inclined plate 24 and near the inner wall of the elliptical cylinder 23, and the elastic cellular board 26 comprises a first board and a first spring; honeycomb holes are fully distributed on the first plate; the first spring is fixed on the inclined plate 24 and used for elastically supporting the first spring. When the device works, the elliptical cylinder 23 rotates to drive the honeycomb ball 25 to rotate, so that the honeycomb ball 25 rolls on the adjacent two inclined plates 24 and the inner wall of the elliptical cylinder 23, when the honeycomb ball 25 is positioned at the bottom end of the elliptical cylinder 23, the honeycomb ball 25 and the elastic honeycomb plate 26 adjacent to the honeycomb ball 25 are just soaked by hydrochloric acid, when the honeycomb ball 25 is lifted upwards from below under the rotation of the elliptical cylinder 23, the honeycomb ball 25 positioned on the inner wall of the bottom of the elliptical cylinder 23 rolls along the inner wall of the elliptical cylinder 23, and in the continuous rotation process of the elliptical cylinder 23, the honeycomb ball 25 directly impacts the elastic honeycomb plate 26 to vibrate the honeycomb ball 25, the elastic honeycomb plate 26 and the elliptical cylinder 23, so that hydrochloric acid attached to the honeycomb ball 25, the elastic honeycomb plate 26 and the elliptical cylinder 23 is vibrated, the fusion of the hydrochloric acid and the hydrogen chloride gas is promoted, and the concentration of the hydrochloric acid is favorably improved; at the same time, the hydrogen chloride gas again enters the honeycomb balls 25 and the elastic honeycomb panel 26.
As shown in fig. 2, the compression cylinder 13 comprises a compression plate 131, a return spring one 132 and a one-way intake valve one 133, and the compression plate 131 is in sliding fit with the inner wall of the recovery tank 1; the first return spring 132 is positioned between the compression plate 131 and the upper inner wall of the recovery box 1, and the first return spring 132 is used for returning the compressed compression plate 131; the one-way air inlet valve 133 is arranged on the compression plate 131, and the one-way air inlet valve 133 is used for enabling the hydrogen chloride gas in the recovery box 1 to enter the compression cylinder 13 in one way. During operation, the oval cylinder 23 rotates, the oval cylinder 23 intermittently pushes the compression plate 131, the hydrogen chloride gas in the compression plate 131 is compressed and conveyed to the first gas release module 4 for gas release, and the first gas release module 4 is located in the hydrochloric acid, so that the released hydrogen chloride gas is introduced into the hydrochloric acid, the fusion of the hydrogen chloride gas and the hydrochloric acid is promoted, and the concentration of the hydrochloric acid is improved.
As shown in fig. 2, the first air bleeding module 4 comprises a hollow plate 41 and a hollow cylinder 42, two end portions of the hollow plate 41 are fixedly connected with the inner wall of the recycling tank 1, and the side wall of the hollow plate 41 is in non-contact with the inner wall of the recycling tank 1; the hollow cylinder 42 is vertically fixed on the hollow plate 41, the hollow cylinder 42 is communicated with the hollow plate 41, and the first air hole is distributed on the hollow cylinder 42. During operation, the compression cylinder 13 leads hydrogen chloride gas into the first air release module 4 through the first pipeline 14, so that the hollow plate 41 and the hollow cylinder 42 which are submerged by hydrochloric acid are under the action of the hydrogen chloride gas, the hollow cylinder 42 firstly sprays hydrochloric acid outwards and then sprays the hydrogen chloride gas outwards, in the process of spraying the hydrochloric acid, the hydrogen chloride gas is pressed towards the hydrochloric acid, the hydrochloric acid and the hydrogen chloride gas are well fused, after the hydrogen chloride gas is sprayed out from the hollow cylinder 42, the hydrogen chloride gas enters the hydrochloric acid, the fusion of the hydrogen chloride gas and the hydrochloric acid is promoted, and the concentration of the hydrochloric acid is improved.
As shown in fig. 2 and 3, a second air bleeding module 6 is arranged at the lower end of the first air bleeding module 4, and the second air bleeding module 6 and the first air bleeding module 4 have the same structural shape; the main shaft 22 is hollow, a through hole 221 penetrating through the inside and the outside of the main shaft 22 is formed in the main shaft 22, and a second pipeline 61 is arranged between the hollow main shaft 22 and the second air bleeding module 6; a one-way air valve II is arranged at the through hole 221; the one-way air valve II is used for enabling hydrogen chloride gas outside the main shaft 22 to enter the hollow main shaft 22 in a one-way mode through the through hole 221; the second pipeline 61 is used for communicating the main shaft 22 with the second air bleeding module 6; the inclined plates 24 are provided with a reset cylinder 63, one end of the reset cylinder 63 is provided with a push plate 631, the other end of the reset cylinder 63, the two adjacent inclined plates 24 and the outer wall of the main shaft 22 form a gas storage cavity 632, and the reset cylinder 63 is communicated with the gas storage cavity 632; the gas storage cavity 632 is communicated with the through hole 221. During operation, the honeycomb ball 25 rolls in the elliptical cylinder 23, when the honeycomb ball 25 strikes the push plate 631 along the inclined plate 24, the hydrogen chloride gas in the reset cylinder 63 is compressed, the compressed hydrogen chloride gas enters the hollow main shaft 22 through the one-way air valve II and the through hole 221, the hydrogen chloride gas is filled into the main shaft 22 along with the reset cylinder 63, the hydrogen chloride gas in the main shaft 22 enters the deflation module II 6 through the pipeline II 61, the deflation module II 6 continuously releases the hydrogen chloride gas in the hydrochloric acid, the improvement of fusion of the hydrogen chloride gas and the hydrochloric acid is facilitated, and the concentration of the hydrochloric acid is improved.
As shown in fig. 2, the side wall of the gas retention plate 3 is adapted to the inner wall of the recycling tank 1, the gas retention plate 3 is fixed on the inner wall of the recycling tank 1, a first circular truncated cone hole 31 with a small upper end and a large lower end is formed in the gas retention plate 3, and needle bristles 32 are arranged in the first circular truncated cone hole 31; the needle bristles 32 are used for storing bubbles in the hydrochloric acid so that the bubbles in the hydrochloric acid are not easy to overflow. When the device works, a large amount of hydrogen chloride gas flows upwards from the lower part of the gas retention plate 3, and when the hydrogen chloride gas passes through the gas retention plate 3, the needle hairs 32 at the position of the gas retention plate 3 can store part of the hydrogen chloride gas, so that the hydrogen chloride gas can be promoted to be fused into hydrochloric acid, and the concentration of the hydrochloric acid can be improved.
As shown in fig. 2, the spoiler module 5 includes a spoiler 51, a bracket and an impeller 52, a side wall of the spoiler 51 is adapted to an inner wall of the recovery tank 1, the spoiler 51 is fixed on the inner wall of the recovery tank 1, and the spoiler 51 is provided with a plurality of second circular truncated cone holes 511 with small upper ends and large lower ends; the bracket is fixed at the upper end of the spoiler 51 and is positioned beside the circular table hole; the impeller 52 is positioned on the bracket, the impeller 52 is rotatably connected with the bracket, and the impeller 52 is positioned at the upper end of the second circular table hole 511. When the device works, a large amount of hydrogen chloride gas below the turbulence module 5 floats upwards, and when the hydrogen chloride gas passes through the turbulence plate 51, the hydrogen chloride gas is dispersed and changed into accumulated hydrogen chloride gas at the second circular truncated cone 511, so that the hydrogen chloride gas overflowing from the small end of the second circular truncated cone 511 directly impacts the impeller 52, the rotation of the impeller 52 is promoted, the rotating impeller 52 promotes the flow of hydrochloric acid, the fusion of the hydrochloric acid and the hydrogen chloride gas is favorably improved, and the concentration of the hydrochloric acid is improved.
The specific use flow is as follows:
when the hydrochloric acid gas injection device is used, hydrochloric acid is injected into the recovery box 1 from the liquid inlet pipe 11, the liquid level of the hydrochloric acid is located between one fourth and one third of the lower portion of the elliptical cylinder 23, after the hydrochloric acid is injected, the liquid inlet pipe 11 is closed, hydrogen chloride gas is continuously introduced into the recovery box 1 from the gas inlet pipe 12, after the recovery box 1 is filled with the hydrogen chloride gas, the motor 21 is started, the motor 21 drives the elliptical cylinder 23 to rotate through the main shaft 22, the elliptical cylinder 23 intermittently pushes the compression plate 131, so that the compression cylinder 13 introduces the hydrogen chloride gas into the gas release module I4 through the pipeline I14, under the action of the hydrogen chloride gas, the hollow plate 41 and the hollow cylinder 42 which are submerged by the hydrochloric acid are firstly sprayed with the hydrochloric acid and then are sprayed with the hydrogen chloride gas, in the hydrochloric acid spraying process, the hydrogen chloride gas is pressed towards the hydrochloric acid, so that the hydrochloric acid and the hydrogen chloride gas are well fused, and after, hydrogen chloride gas enters the hydrochloric acid, so that the fusion of the hydrogen chloride gas and the hydrochloric acid is promoted, and the concentration of the hydrochloric acid is improved;
the first gas module 4 is positioned in the hydrochloric acid, so that the released hydrogen chloride gas is introduced into the hydrochloric acid, the fusion of the hydrogen chloride gas and the hydrochloric acid is promoted, and the concentration of the hydrochloric acid is improved; when the elliptical cylinder 23 rotates, the elliptical cylinder 23 lifts hydrochloric acid, so that the hydrochloric acid is splashed in hydrogen chloride gas, the hydrogen chloride gas is promoted to be fused into the hydrochloric acid, the honeycomb ball 25 at the bottom end of the elliptical cylinder 23 is filled with the hydrochloric acid, when the elliptical cylinder 23 rotates, the honeycomb ball 25 is separated from the hydrochloric acid, the hydrochloric acid on the honeycomb ball 25 is sprayed therewith, the fusion of the hydrogen chloride gas and the hydrochloric acid is promoted, when the honeycomb ball 25 impacts the inclined plate 24 or the inner wall of the elliptical cylinder 23, the honeycomb ball 25 and the elliptical cylinder 23 are promoted to vibrate, the hydrochloric acid on the honeycomb ball 25 and the elliptical cylinder 23 is enabled to fall cleaner, meanwhile, gaps in the honeycomb ball 25 are rapidly occupied by the hydrogen chloride gas, when the honeycomb ball 25 rotates along with the elliptical cylinder 23 and falls into the hydrochloric acid, the honeycomb ball 25 injects the hydrogen chloride gas into the hydrochloric acid, the fusion of the hydrogen chloride gas into the hydrochloric acid is effectively promoted, and the concentration of the hydrochloric acid;
when the honeycomb ball 25 is positioned at the bottom end of the elliptical cylinder 23, the honeycomb ball 25 and the elastic honeycomb plate 26 adjacent to the honeycomb ball 25 are just immersed by hydrochloric acid, when the honeycomb ball 25 is lifted up from the bottom under the rotation of the elliptical cylinder 23, the honeycomb ball 25 positioned on the inner wall of the bottom of the elliptical cylinder 23 can roll along the inner wall of the elliptical cylinder 23, and in the continuous rotation process of the elliptical cylinder 23, the honeycomb ball 25 can directly impact on the elastic honeycomb plate 26, so that the honeycomb ball 25, the elastic honeycomb plate 26 and the elliptical cylinder 23 are vibrated, and the hydrochloric acid attached to the honeycomb ball 25, the elastic honeycomb plate 26 and the elliptical cylinder 23 is vibrated, thereby promoting the fusion of the hydrochloric acid and the hydrogen chloride gas and being beneficial to improving the concentration of the hydrochloric acid; the honeycomb ball 25 rolls in the elliptical cylinder 23, when the honeycomb ball 25 impacts the push plate 631 along the inclined plate 24, the hydrogen chloride gas in the reset cylinder 63 is compressed, the compressed hydrogen chloride gas enters the hollow main shaft 22 through the one-way air valve II and the through hole 221, the hydrogen chloride gas is filled into the main shaft 22 along with the reset cylinder 63, the hydrogen chloride gas in the main shaft 22 enters the deflation module II 6 through the pipeline II 61, and the deflation module II 6 continuously releases the hydrogen chloride gas in the hydrochloric acid, so that the fusion of the hydrogen chloride gas and the hydrochloric acid is improved, and the concentration of the hydrochloric acid is improved; a large amount of hydrogen chloride gas flows upwards under the gas retention plate 3, and when the hydrogen chloride gas passes through the gas retention plate 3, the needle hairs 32 at the gas retention plate 3 can store part of the hydrogen chloride gas, so that the hydrogen chloride gas can be promoted to be blended into the hydrochloric acid, and the concentration of the hydrochloric acid can be improved; when a large amount of hydrogen chloride gas floats upwards below the turbulence module 5 and passes through the turbulence plate 51, the hydrogen chloride gas is dispersed and changed into accumulated hydrogen chloride gas at the second circular truncated cone 511, so that the hydrogen chloride gas overflowing from the small end of the second circular truncated cone 511 directly impacts the impeller 52, the rotation of the impeller 52 is promoted, the rotating impeller 52 promotes the flow of hydrochloric acid, the fusion of the hydrochloric acid and the hydrogen chloride gas is favorably improved, and the concentration of the hydrochloric acid is improved.
(A) In the above embodiment, the gas delivered by the pair of compression cylinders of the gas discharge module is released, but not limited thereto, and the gas discharge module one may also be replaced with a gas ejection head.
Industrial applicability
According to the invention, the hydrogen chloride gas is introduced into the hydrochloric acid recovery, concentration and regeneration device, so that the hydrogen chloride gas is fully blended into the hydrochloric acid to improve the concentration of the hydrochloric acid; the hydrochloric acid in the hydrochloric acid recovery, concentration and regeneration device is circularly cooled to improve the solubility of hydrogen chloride gas in the hydrochloric acid and improve the concentration of the hydrochloric acid; anhydrous sodium sulfate is added into hydrochloric acid to absorb water in the hydrochloric acid, so that the hydrochloric acid is concentrated, the concentration of the hydrochloric acid is improved, and the waste hydrochloric acid can be recycled; therefore, the method for recovering, concentrating and regenerating the hydrochloric acid is useful in the technical field of recovering and concentrating the waste hydrochloric acid.
Claims (7)
1. A hydrochloric acid recovery, concentration and regeneration method is characterized in that; the method comprises the following steps:
s1: filtering the waste hydrochloric acid to be recovered by using a concentrated hydrochloric acid filter to remove impurities in the waste hydrochloric acid;
s2: preheating the S1 waste hydrochloric acid after impurity removal and performing multi-effect evaporation to prepare hydrogen chloride gas;
s3: directly introducing the hydrogen chloride gas evaporated in the step S2 into a hydrochloric acid recovery, concentration and regeneration device filled with dilute hydrochloric acid, concentrating the hydrochloric acid, and controlling the concentration time according to the concentration required to be increased by the hydrochloric acid until the hydrogen chloride gas is difficult to be dissolved in the hydrochloric acid;
s4: circularly cooling the concentrated hydrochloric acid in the hydrochloric acid recovery, concentration and regeneration device in the S3, circularly cooling the hydrochloric acid by the cooling device and the circulating pump until the hydrochloric acid in the hydrochloric acid recovery, concentration and regeneration device reaches a specified concentration, stopping concentration, and recovering the hydrochloric acid; the hydrogen chloride gas is dissolved in water to release heat, and the heat release can reduce the solubility of the hydrogen chloride gas;
s5: adding anhydrous sodium sulfate into the hydrochloric acid recovered in S4, drying, allowing the anhydrous sodium sulfate to absorb water in the hydrochloric acid, and concentrating the hydrochloric acid again to obtain the required concentration;
the hydrochloric acid recovery, concentration and regeneration device in the S3 and S4 comprises a recovery box (1), an air filling module (2), an air retention plate (3), an air release module I (4) and a turbulence module (5), wherein a liquid inlet pipe (11) is arranged at one side part of the recovery box (1), an air inlet pipe (12) is arranged at the other side part of the recovery box (1), the lower part of the recovery box (1) is used for containing hydrochloric acid to be concentrated, and a compression cylinder (13) is arranged at the upper end of the recovery box (1); the first deflation module (4) is arranged at the bottom of the recovery box (1), the first deflation module (4) is communicated with the compression cylinder (13) through a first pipeline (14), and a first one-way air outlet valve (15) is arranged on the first pipeline (14); the gas filling module (2) is positioned at the lower end of the compression cylinder (13), the gas filling module (2) rotates to intermittently push the compression cylinder (13), so that the compression cylinder (13) transmits gas to the gas discharging module I (4), the gas discharging module I (4) sprays hydrogen chloride gas, and the gas filling module (2) is used for filling the hydrogen chloride gas at the upper part of the recovery box (1) into hydrochloric acid at the lower part of the recovery box (1) to thicken the hydrochloric acid; the gas retention plate (3) is positioned above the first gas release module (4), the gas retention plate (3) is fixedly connected with the side wall of the recovery box (1), and the gas retention plate (3) is used for prolonging the retention time of hydrogen chloride gas in hydrochloric acid and promoting the hydrogen chloride gas to be dissolved in the hydrochloric acid; the spoiler (51) is positioned above the gas retention plate (3), and the spoiler (51) is used for promoting the flow of the hydrochloric acid in the recovery tank (1); wherein the content of the first and second substances,
the gas filling module (2) comprises a motor (21), a main shaft (22), an elliptical cylinder (23), inclined plates (24) and honeycomb balls (25), wherein at least six inclined plates (24) are arranged on the main shaft (22), the inclined plates (24) are tangent to the curved surface of the main shaft (22), the main shaft (22) is fixedly connected with the elliptical cylinder (23) through the inclined plates (24), and the main shaft (22) is located at the rotation center of the elliptical cylinder (23); a plurality of partition plates are arranged on the main shaft (22), the partition plates are perpendicular to the main shaft (22), and the elliptic cylinder (23) is uniformly divided into a plurality of sections by the partition plates; the wall of the elliptic cylinder (23) is fully provided with liquid leakage holes, and one third or two fifths of the lower part of the elliptic cylinder (23) is positioned below the liquid level of hydrochloric acid; the honeycomb balls (25) are arranged in the elliptical cylinder (23), the honeycomb balls (25) are positioned at the bottommost end of the elliptical cylinder (23) and are submerged by hydrochloric acid, the honeycomb balls (25) are provided in plurality, and the honeycomb balls (25) are positioned between two adjacent inclined plates (24); the motor (21) is fixed on the outer side wall of the recovery box (1), the motor (21) is connected with the main shaft (22), and the motor (21) is used for driving the elliptical cylinder (23) to rotate so that the honeycomb ball (25) rolls along the inclined plate (24) and the inner wall of the elliptical cylinder (23), and the honeycomb ball (25) brings hydrogen chloride gas into hydrochloric acid.
2. The hydrochloric acid recovery, concentration and regeneration method according to claim 1, characterized in that: an elastic cellular board (26) is arranged on the inclined board (24), the elastic cellular board (26) is positioned at the end part of the inclined board (24) and close to the inner wall of the elliptical cylinder (23), and the elastic cellular board (26) comprises a first board and a first spring; honeycomb holes are fully distributed on the first plate; the first spring is fixed on the inclined plate (24) and used for elastically supporting the first spring.
3. The hydrochloric acid recovery, concentration and regeneration method according to claim 1, characterized in that: the compression cylinder (13) comprises a compression plate (131), a first return spring (132) and a first one-way air inlet valve (133), and the compression plate (131) is in sliding fit with the inner wall of the recovery box (1); the first return spring (132) is positioned between the compression plate (131) and the upper inner wall of the recovery box (1), and the first return spring (132) is used for returning the extruded compression plate (131); the one-way air inlet valve I (133) is arranged on the compression plate (131), and the one-way air inlet valve I (133) is used for enabling hydrogen chloride gas in the recovery box (1) to enter the compression cylinder (13) in one way.
4. The hydrochloric acid recovery, concentration and regeneration method according to claim 1, characterized in that: the first deflation module (4) comprises a hollow plate (41) and a hollow cylinder (42), two end parts of the hollow plate (41) are fixedly connected with the inner wall of the recovery box (1), and the side wall of the hollow plate (41) is in non-contact with the inner wall of the recovery box (1); the hollow cylinder (42) is vertically fixed on the hollow plate (41), the hollow cylinder (42) is communicated with the hollow plate (41), and the hollow cylinder (42) is fully provided with a first air hole.
5. The hydrochloric acid recovery, concentration and regeneration method according to claim 4, characterized in that: a second deflation module (6) is arranged at the lower end of the first deflation module (4), and the second deflation module (6) and the first deflation module (4) are identical in structural shape; the main shaft (22) is hollow, a through hole (221) penetrating through the main shaft (22) is formed in the main shaft (22), and a second pipeline (61) is arranged between the hollow main shaft (22) and the second air bleeding module (6); a one-way air valve II is arranged at the through hole (221); the one-way air valve II is used for enabling hydrogen chloride gas outside the main shaft (22) to enter the hollow main shaft (22) in a one-way mode through the through hole (221); the second pipeline (61) is used for communicating the main shaft (22) with the second air discharging module (6); the inclined plates (24) are provided with reset cylinders (63), one ends of the reset cylinders (63) are provided with push plates (631), the other ends of the reset cylinders (63), the two adjacent inclined plates (24) and the outer wall of the main shaft (22) form gas storage cavities (632), and the reset cylinders (63) are communicated with the gas storage cavities (632); the gas storage cavity (632) is communicated with the through hole (221).
6. The hydrochloric acid recovery, concentration and regeneration method according to claim 1, characterized in that: the side wall of the gas retention plate (3) is matched with the inner wall of the recovery box (1), the gas retention plate (3) is fixed on the inner wall of the recovery box (1), a circular table hole I (31) with a small upper end and a large lower end is arranged on the gas retention plate (3), and needle bristles (32) are arranged in the circular table hole I (31); the needle hairs (32) are used for storing bubbles in the hydrochloric acid so that the bubbles in the hydrochloric acid are not easy to overflow.
7. The hydrochloric acid recovery, concentration and regeneration method according to claim 1, characterized in that: the flow disturbance module (5) comprises a flow disturbance plate (51), a support and an impeller (52), the side wall of the flow disturbance plate (51) is matched with the inner wall of the recovery box (1), the flow disturbance plate (51) is fixed on the inner wall of the recovery box (1), and a plurality of circular platform holes II (511) with small upper ends and large lower ends are arranged on the flow disturbance plate (51); the bracket is fixed at the upper end of the spoiler (51) and is positioned beside the circular table hole; the impeller (52) is positioned on the support, the impeller (52) is rotatably connected with the support, and the impeller (52) is positioned at the upper end of the second circular table hole (511).
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| CN109761195B (en) * | 2019-01-23 | 2020-10-16 | 淮北市菲美得环保科技有限公司 | High-efficient preparation hydrogen chloride gas equipment |
| CN109573947B (en) * | 2019-02-14 | 2023-12-01 | 山西铂凡毅隆生物科技有限公司 | Efficient hydrogen chloride preparation process |
| CN111359351A (en) * | 2020-03-13 | 2020-07-03 | 重庆德沃木制品加工有限公司 | Manufacturing process of boiler dust collection device |
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| CN202415148U (en) * | 2012-01-12 | 2012-09-05 | 南通贝思特石墨设备有限公司 | Full hydrochloric acid resolution system device |
| JP5177360B2 (en) * | 2007-06-21 | 2013-04-03 | 住友化学株式会社 | Method for producing hydrogen chloride and method for producing chlorine |
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| JPS63159201A (en) * | 1986-12-23 | 1988-07-02 | Kobe Steel Ltd | Treatment of roasting gas in apparatus for recovery of waste hydrochloric acid |
| JP5177360B2 (en) * | 2007-06-21 | 2013-04-03 | 住友化学株式会社 | Method for producing hydrogen chloride and method for producing chlorine |
| CN202415148U (en) * | 2012-01-12 | 2012-09-05 | 南通贝思特石墨设备有限公司 | Full hydrochloric acid resolution system device |
| CN103922529A (en) * | 2014-04-19 | 2014-07-16 | 上海亿华科技有限公司 | Low-energy-consumption device for recycling hydrochloric acid waste water and method for recycling hydrochloric acid waste water |
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