CN204237555U - A kind of drying installation of hydrogen chloride gas - Google Patents
A kind of drying installation of hydrogen chloride gas Download PDFInfo
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- CN204237555U CN204237555U CN201420617972.0U CN201420617972U CN204237555U CN 204237555 U CN204237555 U CN 204237555U CN 201420617972 U CN201420617972 U CN 201420617972U CN 204237555 U CN204237555 U CN 204237555U
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- chloride gas
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Abstract
The utility model discloses a kind of drying installation of hydrogen chloride gas, comprise drying tower and demister, it is characterized in that, the inside of described drying tower comprises siccative spray header, packing section and column plate section from top to bottom successively; The bottom of described drying tower is provided with the HCI gas inlet be positioned at below column plate section, and the top of described drying tower is provided with the dry gas outlet be positioned at above siccative spray header; Described demister is at least two mist eliminators of the described dry gas outlet of series connection access.The utility model, demister, while raising is except fog effect, can also make liquid desicoant recycle.The combination of packing section and column plate section in drying tower, ensures better drying effect, also has rate of drying faster simultaneously.
Description
Technical field
The utility model relates to Chemical Industry Drying equipment technical field, particularly relates to a kind of drying installation of hydrogen chloride gas.
Background technology
Hydrogen chloride gas is a kind of raw material that chemical field is conventional, can prepare muriate, glue, medicine, dyestuff and organic catalyst compound etc.The method cost that mode due to chlorine and combustion of hydrogen prepares hydrogenchloride is high and not easy to operate, general enterprises is not adopted and is prepared hydrogenchloride in this way, but drip in employing concentrated hydrochloric acid in the sodium chloride solution of phosphorus trichloride or concentrated hydrochloric acid configuration and drip the vitriol oil and prepare hydrogenchloride, but the hydrogen chloride gas adopting these two kinds of modes to obtain is entrapped moisture all inevitably, and general requirement forbids there is moisture during hydrogenchloride participation reaction, especially in the silicon materials production processes such as tetrachloro hydrogen silicon, strict requirement is had to as contained humidity in the hydrogen chloride gas of raw material, general requirement water content is lower than 50ppm, so the micro-moisture in removal hydrogen chloride gas is extremely important, so usually need further to carry out drying treatment to it in the process using hydrogen chloride gas.
It is adopt low temperature separation process that the method that the dehydration of hydrogenchloride disclosed in prior art adopts mainly contains three kinds: one, is namely cooled by the hydrogenchloride containing moisture with chilled brine, condensate moisture is wherein separated; Two is adopt vitriol oil dehydration, and the counter-current absorption in absorption tower by hydrogenchloride and the vitriol oil, makes wherein moisture be separated; Three is adopt molecular sieve drying hydrogen chloride gas.Deep cooling process for separating, in the hydrogenchloride obtained, moisture is at 300-800ppm, does not reach the processing requirement of moisture 50ppm; Adopt vitriol oil dewatering process, the hydrogenchloride moisture obtained is at about 50ppm, but in hydrogenchloride, sulfur acid acid mist is not easily removed, and can impact follow-up production; The hydrogenchloride water-content after molecular sieve drying is adopted to reach below 20ppm, and inclusion-free, but equipment investment and running cost are too high.
Publication number is in the patent of invention document application of 101759150A, discloses a kind of method of hydrogenchloride drying, and drying process is included in dry spray column inner chamber and sprays silicon tetrachloride, carries out spray process to hydrogen chloride gas.After spray process, the silica solid generated is discharged at the bottom of tower, hydrogen chloride gas mixes silicon tetrachloride and enters condenser from the top of dry spray column, and condensed silicon tetrachloride liquid is recovered in circulation tank, and hydrogen chloride gas is discharged from condenser and entered production plant.This invention can realize unattended operation by supporting Controlling System, runs continuously.But there is following problem in this invention: one is that the silicon tetrachloride liquid sprayed by dry spray column is difficult to fully contact with hydrogen chloride gas to be dried; Two is by means of only condenser condenses, and hydrogen chloride gas entrained with silicon tetrachloride siccative and a small amount of solid particulate are difficult to Ex-all, impact subsequent production.
Utility model content
The utility model provides a kind of drying installation of hydrogen chloride gas, and in efficient removal hydrogen chloride gas, contained humidity simultaneously, effectively can also remove siccative droplet and precipitate particles that hydrogen chloride gas carries secretly from drying tower.
A drying installation for hydrogen chloride gas, comprises drying tower and demister, and the inside of described drying tower comprises siccative spray header, packing section and column plate section from top to bottom successively.
The bottom of described drying tower is provided with the HCI gas inlet be positioned at below column plate section, and the top of described drying tower is provided with the dry gas outlet be positioned at above siccative spray header.
Described demister is at least two mist eliminators of the described dry gas outlet of series connection access.
In the utility model, the filler in drying tower packing section has good dispersiveness, and liquid desicoant can be made to be evenly distributed at filling surface, thus increase gas liquid interfacial area, improve drying effect, column plate Duan Zhong unit tower section can process larger gas-liquid flow, thus improves rate of drying.Compared with packing section, column plate section each layer column plate is not easy blocked in drying process, and along with drying process continue carry out, throw out major sedimentary is in drying tower bottom, therefore in this device drying tower, using packing section as epimere, column plate section is as hypomere.
Siccative adopts the high boiling material after silicon tetrachloride rectifying separation.In industrial production, the commercial value of high boiling material is always lower, thus occurs that a large amount of overstocking piles storehouse, so not only causes serious environmental issue and potential safety hazard, also makes effective resource waste in a large number.High boiling material after silicon tetrachloride rectifying separation has water-disintegrable by force, and the gas generated after hydrolysis only has hydrogenchloride, is suitable as the siccative of hydrogen chloride gas.The utility model utilizes the high boiling material after silicon tetrachloride rectifying as siccative, has saved natural resources, has reduced running cost, decreased environmental pollution.
Dried gas is exported by the dry gas at drying tower top and enters demister, for removing siccative droplet and the precipitate particles of dry post chlorization hydrogen entrained with, and access two mist eliminators of at least connecting in demister.
The bottom of described drying tower is provided with the siccative circulation port be positioned at below HCI gas inlet, and this siccative circulation port is communicated with siccative spray header by the pipeline with recycle pump.
With a branch road on pipeline between described siccative circulation port and pump entry, this branch road send pipeline to be connected with siccative storage tank or defeated siccative.
When the drying installation of the utility model hydrogen chloride gas uses, for ensureing that drying process continues to carry out, need at any time to liquid make-up siccative in drying tower, siccative storage tank or defeated siccative send the liquid desicoant in pipeline to pump in drying tower through recycle pump, sprayed by siccative spray header, after spray, liquid desicoant is from top to bottom successively by packing section and column plate section, until at the bottom of tower, as contents of precipitate in siccative at the bottom of tower is not high, then the liquid desicoant drying agent circulation port flow at the bottom of tower is pumped into drying tower internal recycle by the first recycle pump and use.When the drying installation of the utility model hydrogen chloride gas uses, for ensureing that this device can continuous service, as preferably, described recycle pump is in parallel two, and wherein one as subsequent use.
Described demister is two mesh mist eliminators of series connection.Mesh mist eliminator has the advantages that pressure drop is little, specific surface area is large, demisting efficiency is high, and can solid particulate matter be tackled, for removing siccative droplet and the precipitate particles of dry post chlorization hydrogen entrained with better, as preferably, silk screen in described mesh mist eliminator is waviness Stainless Steel Cloth, waviness silk screen can increase actual demist area, strengthens except fog effect, and the silk screen of stainless steel can extend mist eliminator work-ing life.
All there is liquid exit the bottom of each mesh mist eliminator, and the liquid exit of all mesh mist eliminators also connects into a return main, and the outlet of this return main is to drying tower.
The outlet of described return main is between the packing section and column plate section of drying tower.
When the drying installation of the utility model hydrogen chloride gas uses, dry gas is exported by the dry gas at drying tower top and enters demister, the siccative droplet that dry post chlorization hydrogen is mingled with through agglomeration, collect the liquid desicoant again formed, the precipitate particles be mingled with is tackled by demister silk screen, the mixture that this liquid desicoant and precipitate particles form, reenters drying tower by the outlet of the return main between drying tower packing section and column plate section.Though drying tower packing section has good liquid dispersion effect, but as return main outlet is arranged on above drying tower packing section, then be easy to cause packing section packing layer to block, in contrast, column plate section is not easy blocked in drying process, so be arranged between the packing section of drying tower and column plate section by the outlet of return main, while guarantee drying tower normal operation, resource utilization can also be improved further.
As preferably, each column plate in described column plate section is slant-hole tray, and each column plate is from top to bottom interspersed, and forms roundabout passage.On slant-hole tray plate, the perforate direction of adjacent two rows is contrary, this structure allows comparatively air speed, and siccative liquid layer also can not be excessively thin on plate, rate of drying can be improved, each column plate is from top to bottom interspersed, and forms roundabout passage, liquid desicoant can be made to distribute on the column plate flowed through more even, add siccative liquid layer area simultaneously, be convenient to gas-to-liquid contact.
In order to make drying tower have rate of drying faster while having good drying effect, as preferably, the aspect ratio of packing section and column plate section is 1:1.5-3.
The drying installation of the utility model hydrogen chloride gas also comprises waste residue separating tank, and the top of waste residue separating tank is provided with the feeding mouth be connected with circulating-pump outlet.In drying process, there is strong hydrolysis reaction in liquid desicoant and hydrogen chloride gas contained humidity, in the two hydrolytic process, constantly there is the mixed sediment of orthosilicic acid and silicic acid to occur, as contents of precipitate in liquid desicoant at the bottom of drying tower tower is too high, blocking for avoiding drying tower, ensure the mobility of liquid desicoant in tower simultaneously, need according to content sedimentary in drying tower, control produced quantity, by recycle pump, throw out mixed solution in tower is pumped into waste residue separating tank.
The utility model, low with the drying installation phase specific energy consumption of traditional chlorinated hydrogen, demister, while raising is except fog effect, can also make liquid desicoant recycle.The combination of packing section and column plate section in drying tower, ensures good drying effect, also has rate of drying faster simultaneously.The utility model has saved natural resources, reduces running cost, decreases environmental pollution.
Accompanying drawing explanation
Fig. 1 is the structural representation of the drying installation of a kind of hydrogen chloride gas of the utility model.
1-nitrogen transfer lime; 2-hydrogen chloride gas transfer lime; 3-siccative storage tank or defeated siccative send pipeline; 4-drying tower; 5-packing section; 6-column plate section; 7-first recycle pump; 8-second recycle pump; 9-Matter Transfer pipe; 10-demister; 11-mesh mist eliminator; 12-mesh mist eliminator; 13-return main; 14-waste residue separating tank; 15-nitrogen transfer lime; 16-blow-off valve; 17-hydrogen chloride gas output tube; 18-siccative spray header.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is described in detail.
As shown in Figure 1, the drying installation of a kind of hydrogen chloride gas of the present embodiment comprises drying tower 4, and the inside of drying tower 4 comprises siccative spray header 18, packing section 5 and column plate section 6 from top to bottom successively.Drying tower 4 bottom is separately installed with tensimeter, thermometer, temperature buzzer and fluid level transmitter and is used for monitoring tower internal pressure, temperature and liquid level.The bottom of drying tower 4, the HCI gas inlet be positioned at below column plate section 6 connects hydrogen chloride gas transfer lime 2, the siccative circulation port be positioned at below HCI gas inlet connects the first recycle pump 7 entrance, first recycle pump 7 exports and is connected with Matter Transfer pipe 9 with drying tower 4 top, and Matter Transfer pipe 9 is communicated with siccative spray header 18.Above spray header 18, dry gas outlet is communicated with demister 10, and demister 10 is formed in parallel by mesh mist eliminator 11 and mesh mist eliminator 12, and demister 10 pneumatic outlet connects hydrogen chloride gas output tube 17.
Bottom drying tower 4 siccative circulation port and the first recycle pump 7 entrance between pipeline on a branch road, this branch road send pipeline 3 to be connected with siccative storage tank or defeated siccative.Each mesh mist eliminator liquid exit also connects into return main outlet between the packing section 5 of drying tower 4 and column plate section 6, and return main outlet and siccative storage tank or defeated siccative send pipeline 3 outlet to be connected.
Block for avoiding drying tower, ensure the mobility of liquid desicoant in tower simultaneously, need according to content sedimentary in drying tower, control produced quantity, so the drying installation of the utility model hydrogen chloride gas also should comprise waste residue separating tank 14, can body is provided with pressure unit and level glass, by waste liquid height in level glass monitoring tank, the top of waste residue separating tank 14 is provided with and exports with recycle pump 7 feeding mouth be connected, and bottom discharge mouth connects blow-off valve 16.
For ensureing that drying process can continue to carry out, for subsequent use as the first recycle pump 7 of the second recycle pump 8 is installed in this device.
For reducing the potential safety hazard of drying process, avoid the generation of industrial accident, before the drying, by nitrogen transfer lime 1 to conveying high-pressure nitrogen in drying tower 4, blow away air in tower, in like manner, by nitrogen transfer lime 15 to conveying high-pressure nitrogen in waste residue separating tank 14, blow away air in tank.
When the drying installation of the utility model hydrogen chloride gas uses, for reducing the potential safety hazard of drying process, before the drying, first pass into high pressure nitrogen by nitrogen transfer lime 1 and nitrogen transfer lime 15 respectively in drying tower 4 and waste residue separating tank 14, blow away air in device.Time dry, liquid desicoant drying agent storage tank or defeated siccative send pipeline 3 to squeeze in drying tower 4 by the first recycle pump 7, drying agent spray header 18 sprays on the filler of packing section 5, and flow down along filling surface, when flowing to column plate section 6, under gravity, flow through each layer column plate from top to bottom successively, the siccative liquid layer that every layer of column plate remains certain depth can be made, until at the bottom of tower, as contents of precipitate in liquid desicoant at the bottom of drying tower 4 tower is not high, the siccative drying agent circulation port flow at the bottom of tower pumps into drying tower 4 internal recycle by the first recycle pump 7 and uses.Hydrogen chloride gas to be dried enters bottom drying tower 4 from hydrogen chloride gas transfer lime 2, up along drying tower 4 tower chamber, the hydrogen chloride gas to be dried mutually driven in the wrong direction in drying tower 4 fully contacts with liquid desicoant, mixes and react, after completing drying, dry gas drying pneumatic outlet enters demister 10, and after demist, gas enters hydrogen chloride gas output channel 17 through demister 10 pneumatic outlet.The siccative droplet that dry gas is mingled with through agglomeration, collect the liquid desicoant again formed, the precipitate particles be mingled with is tackled by demister silk screen, the mixture that this liquid desicoant and precipitate particles form, reenters drying tower 4 internal recycle by the outlet of the return main 13 between drying tower packing section 5 and column plate section 6 and uses.As contents of precipitate in liquid desicoant at the bottom of drying tower 4 tower is too high, by throw out together with waste liquid drying agent circulation port from extraction in tower, enter waste residue separating tank 14 through the first recycle pump 7.
The utility model, low with the drying installation phase specific energy consumption of traditional chlorinated hydrogen, demister, while raising is except fog effect, can also make liquid desicoant recycle.The combination of packing section and column plate section in drying tower, ensures better drying effect, also has rate of drying faster simultaneously.The utility model utilizes the high boiling material after silicon tetrachloride rectifying as siccative, has saved natural resources, has reduced running cost, decreased environmental pollution.
Claims (10)
1. a drying installation for hydrogen chloride gas, comprises drying tower and demister, it is characterized in that, the inside of described drying tower comprises siccative spray header, packing section and column plate section from top to bottom successively;
The bottom of described drying tower is provided with the HCI gas inlet be positioned at below column plate section, and the top of described drying tower is provided with the dry gas outlet be positioned at above siccative spray header;
Described demister is at least two mist eliminators of the described dry gas outlet of series connection access.
2. the drying installation of hydrogen chloride gas as claimed in claim 1, it is characterized in that, the bottom of described drying tower is provided with the siccative circulation port be positioned at below HCI gas inlet, and this siccative circulation port is communicated with siccative spray header by the pipeline with recycle pump.
3. the drying installation of hydrogen chloride gas as claimed in claim 2, it is characterized in that, with a branch road on the pipeline between described siccative circulation port and pump entry, this branch road send pipeline to be connected with siccative storage tank or defeated siccative.
4. the drying installation of hydrogen chloride gas as claimed in claim 2, is characterized in that, described recycle pump is in parallel two.
5. the drying installation of hydrogen chloride gas as claimed in claim 1, is characterized in that, described demister is two mesh mist eliminators of series connection.
6. the drying installation of hydrogen chloride gas as claimed in claim 5, it is characterized in that, all there is liquid exit the bottom of each mesh mist eliminator, and the liquid exit of all mesh mist eliminators also connects into a return main, and the outlet of this return main is to drying tower.
7. the drying installation of hydrogen chloride gas as claimed in claim 6, it is characterized in that, the outlet of described return main is between the packing section and column plate section of drying tower.
8. the drying installation of hydrogen chloride gas as claimed in claim 1, it is characterized in that, each column plate in described column plate section is slant-hole tray, and each column plate is from top to bottom interspersed, and forms roundabout passage.
9. the drying installation of hydrogen chloride gas as claimed in claim 1, it is characterized in that, the aspect ratio of packing section and column plate section is 1:1.5-3.
10. the drying installation of hydrogen chloride gas as claimed in claim 1, it is characterized in that, also comprise waste residue separating tank, the top of waste residue separating tank is provided with the feeding mouth be connected with circulating-pump outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420617972.0U CN204237555U (en) | 2014-10-23 | 2014-10-23 | A kind of drying installation of hydrogen chloride gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420617972.0U CN204237555U (en) | 2014-10-23 | 2014-10-23 | A kind of drying installation of hydrogen chloride gas |
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| CN204237555U true CN204237555U (en) | 2015-04-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399053A (en) * | 2015-12-07 | 2016-03-16 | 南通山剑石墨设备有限公司 | Hydrogen chloride drying system |
| CN105480947A (en) * | 2015-12-07 | 2016-04-13 | 南通山剑石墨设备有限公司 | Alcohol-containing waste hydrochloric acid treatment apparatus and treatment technology thereof |
| CN107848799A (en) * | 2015-08-10 | 2018-03-27 | 昭和电工株式会社 | Chlorination method for preparing hydrogen |
| CN109289454A (en) * | 2018-11-30 | 2019-02-01 | 浙江高成绿能科技有限公司 | A kind of recyclable drying device for gas dry |
| CN114191948A (en) * | 2021-12-21 | 2022-03-18 | 湖北葛化华祥化学有限公司 | Device and method for drying chlorine gas by bubble cap drying tower |
-
2014
- 2014-10-23 CN CN201420617972.0U patent/CN204237555U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107848799A (en) * | 2015-08-10 | 2018-03-27 | 昭和电工株式会社 | Chlorination method for preparing hydrogen |
| CN107848799B (en) * | 2015-08-10 | 2020-07-17 | 昭和电工株式会社 | Method for producing hydrogen chloride |
| CN105399053A (en) * | 2015-12-07 | 2016-03-16 | 南通山剑石墨设备有限公司 | Hydrogen chloride drying system |
| CN105480947A (en) * | 2015-12-07 | 2016-04-13 | 南通山剑石墨设备有限公司 | Alcohol-containing waste hydrochloric acid treatment apparatus and treatment technology thereof |
| CN105399053B (en) * | 2015-12-07 | 2018-01-30 | 南通山剑石墨设备有限公司 | Hydrogen chloride drying system |
| CN109289454A (en) * | 2018-11-30 | 2019-02-01 | 浙江高成绿能科技有限公司 | A kind of recyclable drying device for gas dry |
| CN109289454B (en) * | 2018-11-30 | 2023-11-28 | 浙江高成绿能科技有限公司 | Circulated drying device for gas drying |
| CN114191948A (en) * | 2021-12-21 | 2022-03-18 | 湖北葛化华祥化学有限公司 | Device and method for drying chlorine gas by bubble cap drying tower |
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