CN202785640U - Device for purifying ultra-pure hydrochloric acid - Google Patents
Device for purifying ultra-pure hydrochloric acid Download PDFInfo
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- CN202785640U CN202785640U CN 201220280725 CN201220280725U CN202785640U CN 202785640 U CN202785640 U CN 202785640U CN 201220280725 CN201220280725 CN 201220280725 CN 201220280725 U CN201220280725 U CN 201220280725U CN 202785640 U CN202785640 U CN 202785640U
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- hydrochloric acid
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Abstract
The utility model discloses a device for purifying ultra-pure hydrochloric acid. The device comprises a preheater and an elevated tank communicated with a storage tank, wherein the preheater comprises an inner pipe and an outer pipe sheathed around the inner pipe; a discharge hole of the elevated tank is connected with a feeding hole of the outer pipe; a discharge hole of the outer pipe is communicated with a distillation still; the bottom of the distillation still is provided with a high-boiling-point matter discharge hole; a filling tower and a sting distillation tower which are communicated with each other are sequentially arranged at the upper part of the distillation still; a discharge hole arranged in the top of the sting distillation tower is connected with a feeding hole of the inner pipe; a discharge hole of the inner pipe is connected with a condenser; a discharge hole of the condenser is connected with a feeding hole of a blending tank; a discharge hole of the blending tank is connected with a finished product tank; the feeding hole of the blending tank is arranged at the lower end of the blending tank; and the discharge hole of the blending tank is higher than the feeding hole of the blending tank. The device not only is small in occupied space, but also is stable and reliable in product quality.
Description
Technical field
The utility model relates to the superhigh-purity reagent purification techniques, is specifically related to a kind of purifying plant of ultra-pure hydrochloric acid.
Background technology
Superhigh-purity reagent is one of indispensable key basic chemical industry raw material during the electronic applications microfabrication is made, and is mainly used in cleaning and the etching of chip.Ultra-pure hydrochloric acid is the strongly-acid clean-out system, common and nitric acid, and hydrogen peroxide is used.
The method of producing ultra-pure hydrochloric acid mainly contains two kinds: the one, carry out purification operations take technical hydrochloric acid as raw material; The 2nd, take hydrogen and chlorine as raw material reaction makes hydrogenchloride, again hydrogenchloride is dissolved in the pure water, simultaneously the foreign matter content of strict control raw material.Chinese patent 200410008785.3 discloses a kind of rectifier unit for preparing ultra-clean and high pure chemical reagent acid, comprise the common processing equipment in the conventional distillation device, rectifying tower is being descended by packing tower, thorn steaming tower forms in upper direct series connection, packing tower is sectional type, in addition, the absorption cell in this device and quality supervision tank are set up separately, and taking up room of whole plant is larger.In addition, the effect of absorption cell is to cool off and further absorb a small amount of hydrogen chloride gas, the purpose of quality supervision tank with control quality product, the hydrochloric acid of condenser condenses and hydrogenchloride are delivered to the liquid level below of absorption cell through pipeline, the discharge port of absorption cell is very near apart from the pipeline opening of liquid level below, the hydrochloric acid that easily condensation is got off directly enters in the quality supervision groove, can cause the every batch products quality that gathers in the quality supervision groove unstable.Therefore, be necessary puring device for hydrochloric acid of the prior art is improved.
The utility model content
The purpose of this utility model is to overcome the defective that exists in the prior art, provides a kind of stable and reliable product quality, the purifying plant of the little ultra-pure hydrochloric acid that takes up room.
For achieving the above object, the technical solution of the utility model is that ultra-pure puring device for hydrochloric acid comprises preheater and the header tank that is connected with storage tank, described preheater comprises inner tube and is set in described inner tube outer tube on every side, the discharge port of described header tank is connected with the opening for feed of described outer tube, the discharge port of described outer tube is connected with still kettle, the bottom of described still kettle is provided with the high boiling product discharge port that is connected with the dilute hydrochloric acid tank, the top of described still kettle is disposed with packing tower and the thorn steaming tower that communicates, the discharge port at thorn steaming tower top is connected with the opening for feed of described inner tube, the discharge port of described inner tube is connected with condenser, the discharge port of described condenser is connected with the opening for feed of mixing tank, the discharge port of described mixing tank is connected with finished pot, the opening for feed of described mixing tank is arranged on the low side of mixing tank, and the discharge port height of described mixing tank is greater than the opening for feed height of mixing tank.
Wherein, be provided with salt acidimeter and thermometer in the described mixing tank.
Wherein, the high boiling product discharge port of described still kettle is connected with the discharge nozzle that is connected with the dilute hydrochloric acid storage tank, and described discharge nozzle is the U-shaped pipe, and the vertex of described discharge nozzle flushes with the liquid level of hydrochloric acid in the described still kettle.
Wherein, the opening for feed of described inner tube and the discharge port of described outer tube are arranged on an end of described preheater, and the discharge port of described inner tube and the opening for feed of described outer tube are arranged on the other end of described preheater.
Wherein, be filled with quartz ring in the described packing tower.
Wherein, described still kettle, packing tower and thorn steaming tower are the silica glass material.
Advantage of the present utility model and beneficial effect are: the opening for feed height of mixing tank is lower than the discharge port height in this device, the hydrochloric acid that condenser flows out and hydrogenchloride at first arrive the mixing tank bottom, because the stirring action of hydrogenchloride bubble, concentration of hydrochloric acid in the mixing tank is more even, when the thermometer at tank level place and salt acidimeter reach default value, the hydrochloric acid at liquid level place is at first imported in the finished pot, and this device has not only reduced and has taken up room, and stable and reliable product quality.
Description of drawings
Fig. 1 is the structural representation of the purifying plant of the ultra-pure butylacetate of the utility model.
Among the figure: 1, storage tank; 2, header tank; 3, preheater; 4, inner tube; 5, outer tube; 6, still kettle; 7, packing tower; 8, thorn steaming tower; 9, condenser; 10, mixing tank; 11, finished pot; 12, dilute hydrochloric acid tank.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, present embodiment is a kind of ultra-pure puring device for hydrochloric acid, comprise preheater 3 and the header tank 2 that is connected with storage tank 1, preheater 3 comprises inner tube 4 and is set in inner tube 4 outer tube 5 on every side, the discharge port of header tank 2 is connected with the opening for feed of outer tube 5, the discharge port of outer tube 5 is connected with still kettle 6, the bottom of still kettle 6 is provided with the high boiling product discharge port that is connected with dilute hydrochloric acid tank 12, the top of still kettle 6 is disposed with packing tower 7 and the thorn steaming tower 8 that communicates, the discharge port at thorn steaming tower 8 tops is connected with the opening for feed of inner tube 4, the discharge port of inner tube 4 is connected with condenser 9, the discharge port of condenser 9 is connected with the opening for feed of mixing tank 10, the discharge port of mixing tank 10 is connected with finished pot 11, the opening for feed of mixing tank 10 is arranged on the low side of mixing tank 10, and the discharge port height of mixing tank 10 is greater than the opening for feed height of mixing tank 10.
In the present embodiment, be provided with salt acidimeter and thermometer in the mixing tank 10.
In the present embodiment, the high boiling product discharge port of still kettle 6 is connected with the discharge nozzle that is connected with dilute hydrochloric acid storage tank 1, and discharge nozzle is the U-shaped pipe, and the vertex of discharge nozzle flushes with the liquid level of hydrochloric acid in the still kettle 6.
In the present embodiment, the discharge port of the opening for feed of inner tube 4 and outer tube 5 is arranged on an end of preheater 3, and the opening for feed of the discharge port of inner tube 4 and outer tube 5 is arranged on the other end of preheater 3.
In the present embodiment, be filled with quartz ring in the packing tower 7.
In the present embodiment, still kettle 6, packing tower 7 and thorn steaming tower 8 are the silica glass material.
Technical hydrochloric acid is extracted into header tank 2 from storage tank 1, adds pretreating reagent, stirring, static.Then the good hydrochloric acid stock liquid of pre-treatment is flowed out from header tank 2 bottoms, after entering preheater 3 preheatings, the bubble point material enters quartzose still kettle 6, still kettle 6 heats again, the effusion hydrogen chloride gas is vaporized elder generation through the top of rectifying tower quartz ring packing tower 7 with residue for 20% constant salt acid azeotrope of component, again through the thorn steaming tower 8 of series connection, repeatedly carries out partial condensation backflow, partial gasification, gas, liquid two-phase close contact repeatedly in tower carries out the matter exchange; Obtain purifying and carry out counterflow heat exchange with stock liquid; The overhead product at thorn steaming tower 8 tops enters condenser 9 and is condensed into liquid after preheater 3 precoolings; Regulate the charging switch, make by the salt acidimeter in the mixing tank 10 and thermometer control proportion and be controlled at predetermined numerical value, then be imported into finished pot 11, enter dilute hydrochloric acid tank 12 after 20% constant salt acid azeotrope of another part component cools off.
Flowing out to hydrochloric acid from stock liquid from header tank 2 automatically enters finished pot 11 and all occurs in the tightness system, except the heat-eliminating medium self-organizing system that recycles in the condenser 9, the evacuated tube of storage tank 1, mixing tank 10 and finished pot 11 passes under the alkali lye liquid level in the tail gas absorption cell, then direct outdoor high-order emptying.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. the purifying plant of ultra-pure hydrochloric acid, described purifying plant comprises preheater and the header tank that is connected with storage tank, described preheater comprises inner tube and is set in described inner tube outer tube on every side, the discharge port of described header tank is connected with the opening for feed of described outer tube, the discharge port of described outer tube is connected with still kettle, the bottom of described still kettle is provided with the high boiling product discharge port, the top of described still kettle is disposed with packing tower and the thorn steaming tower that communicates, the discharge port at thorn steaming tower top is connected with the opening for feed of described inner tube, the discharge port of described inner tube is connected with condenser, it is characterized in that, the discharge port of described condenser is connected with the opening for feed of mixing tank, the discharge port of described mixing tank is connected with finished pot, the opening for feed of described mixing tank is arranged on the low side of described mixing tank, and the discharge port height of described mixing tank is greater than the opening for feed height of mixing tank.
2. the purifying plant of ultra-pure hydrochloric acid according to claim 1 is characterized in that, is provided with salt acidimeter and thermometer in the described mixing tank.
3. the purifying plant of ultra-pure hydrochloric acid according to claim 2, it is characterized in that, the high boiling product discharge port of described still kettle is connected with the discharge nozzle that is connected with the dilute hydrochloric acid storage tank, and described discharge nozzle is the U-shaped pipe, and the vertex of described discharge nozzle flushes with the liquid level of hydrochloric acid in the described still kettle.
4. the purifying plant of ultra-pure hydrochloric acid according to claim 3, it is characterized in that, the opening for feed of described inner tube and the discharge port of described outer tube are arranged on an end of described preheater, and the discharge port of described inner tube and the opening for feed of described outer tube are arranged on the other end of described preheater.
5. the purifying plant of ultra-pure hydrochloric acid according to claim 4 is characterized in that, is filled with quartz ring in the described packing tower.
6. the purifying plant of ultra-pure hydrochloric acid according to claim 5 is characterized in that, described still kettle, packing tower and thorn steaming tower are the silica glass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220280725 CN202785640U (en) | 2012-06-14 | 2012-06-14 | Device for purifying ultra-pure hydrochloric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220280725 CN202785640U (en) | 2012-06-14 | 2012-06-14 | Device for purifying ultra-pure hydrochloric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202785640U true CN202785640U (en) | 2013-03-13 |
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ID=47812947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220280725 Expired - Fee Related CN202785640U (en) | 2012-06-14 | 2012-06-14 | Device for purifying ultra-pure hydrochloric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202785640U (en) |
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2012
- 2012-06-14 CN CN 201220280725 patent/CN202785640U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20140614 |
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| EXPY | Termination of patent right or utility model |