CN206404547U - A kind of dehydration device for hydrogen chloride tail gas - Google Patents
A kind of dehydration device for hydrogen chloride tail gas Download PDFInfo
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- CN206404547U CN206404547U CN201620806381.7U CN201620806381U CN206404547U CN 206404547 U CN206404547 U CN 206404547U CN 201620806381 U CN201620806381 U CN 201620806381U CN 206404547 U CN206404547 U CN 206404547U
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- hydrogen chloride
- tail gas
- drying tower
- chloride tail
- pressure drying
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Abstract
The utility model discloses a kind of dehydration device for hydrogen chloride tail gas, including at least 2 grades graphite coolers, low pressure drying tower, compressor, high pressure drying towers being sequentially connected in series；2 grades of graphite coolers are followed successively by 5 DEG C of aquadag coolers of one-level, two grades of 35 DEG C of salt solution graphite coolers.The utility model first carries out lyophilization using multistage graphite cooler, then carries out profound dehydration using using low pressure drying tower and high pressure drying tower；Experiment proves that after being dehydrated using device of the present utility model, the water content in hydrogen chloride tail gas can be reduced within 5 ppm.
Description
Technical field
The utility model is related to a kind of dehydration device for hydrogen chloride tail gas.
Background technology
In the prior art, produce both at home and abroad in organic fine chemical products, such as chlorine benzene-type products, its tail gas containing highly concentrated
The byproduct hydrogen chloride gas of degree.It is typically directly to be absorbed that difference is made with water in the prior art for the byproduct hydrogen chloride
The hydrochloric acid of concentration.
However, the situation that supply exceed demand has been presented in China's hydrochloric acid market at present, therefore, if by byproduct hydrogen chloride gas
High-purity chlorination hydrogen production is prepared into, then can be increased nearly a hundred times than hydrochloric acid market value.The hydrogen chloride of these high-purities can be answered
For solar energy industry and semiconductor integrated circuit industry, respectively as reaction raw materials and etchant.In the mistake of purification hydrogen chloride
Cheng Zhong, it is inevitable the need for first remove moisture content therein.In the prior art, the dehydration to hydrogen chloride gas generally uses freezing
Evaporation, the principle of lyophilization is to be reduced according to the partial pressure of water vapour with the reduction of temperature, and the freezing point of hydrogen chloride for-
15 DEG C, therefore, the temperature of hydrogen chloride unconfined can not be reduced during lyophilization, general control in the range of -14 ± 2 DEG C, if
Less than this temperature, hydrogen chloride feed-line can be caused to freeze, cause SR to rise, be unfavorable for production.Therefore, by freezing temperature
Degree limitation, during using lyophilization method, the water content of hydrogen chloride can only be controlled between 500 ~ 1000 ppm, it is impossible to enter one again
Step.
Therefore, a kind of dehydration device for hydrogen chloride tail gas is researched and developed, to obtain the hydrogen chloride tail gas of lower water content,
Obviously there is positive realistic meaning.
The content of the invention
The utility model purpose is to provide a kind of dehydration device for hydrogen chloride tail gas.
To achieve the above object of the invention, the technical solution adopted in the utility model is：A kind of taking off for hydrogen chloride tail gas
Water installations, including at least 2 grades graphite coolers, low pressure drying tower, compressor, high pressure drying towers being sequentially connected in series；
2 grades of graphite coolers are followed successively by 5 DEG C of aquadag coolers of one-level, two grades of -35 DEG C of salt solution graphite coolers.
Above, the graphite cooler is prior art, and its principle is lyophilization.It is to use as graphite cooler
Two grades, three-level or more series, this can voluntarily be selected.
In above-mentioned technical proposal, hydrogen chloride tail gas surge tank is additionally provided with before described 5 DEG C of aquadag coolers of one-level.
In above-mentioned technical proposal, the low pressure drying tower is anti-acid molecular sieve drying tower, and its operating pressure is 1 ~ 2 public
Jin.
In above-mentioned technical proposal, the operating temperature of the low pressure drying tower is normal temperature.
In above-mentioned technical proposal, the high pressure drying tower anti-acid molecular sieve drying tower, its operating pressure is 10 ~ 40 public
Jin.
In above-mentioned technical proposal, the operating temperature of the high pressure drying tower is normal temperature.
In above-mentioned technical proposal, the compressor is diaphragm type compressor.
Because above-mentioned technical proposal is used, the utility model has following advantages compared with prior art：
1. the utility model develops a kind of dehydration device for hydrogen chloride tail gas, first entered using multistage graphite cooler
Row lyophilization, then carries out profound dehydration using using low pressure drying tower and high pressure drying tower；Experiment is proved, using this reality
After being dehydrated with new device, the water content in hydrogen chloride tail gas can be reduced within 5 ppm, achieved significant
Effect；
2. equipment investment of the present utility model is relatively low, and it is high-purity chlorination that can substantially reduce the purification of later stage hydrogen chloride
The investment amount of the equipment material of hydrogen technique, extends the service life of equipment, with positive realistic meaning；
3. device of the present utility model is easily operated, the product quality of high-purity hydrogen chloride is improved, certain warp is created
Ji benefit, suitable for popularization and application.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment one.
Wherein：1st, hydrogen chloride tail gas surge tank；2nd, 5 DEG C of aquadag coolers of one-level；3rd, two grades of -35 DEG C of salt aquadags coolings
Device；4th, low pressure drying tower；5th, diaphragm type compressor；6th, high pressure drying tower.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：
Embodiment one：
It is shown in Figure 1, a kind of dehydration device for hydrogen chloride tail gas, including 5 DEG C of aquadags of the one-level being sequentially connected in series
Cooler 2, two grades of -35 DEG C of salt solution graphite coolers 3, low pressure drying tower 4, diaphragm type compressor 5, high pressure drying towers 6；5 DEG C of one-level
Hydrogen chloride tail gas surge tank 1 is additionally provided with before aquadag cooler.
Wherein, the top gas outlet of surge tank is connected with one-level graphite cooler lower entrances, one-level graphite cooler top
Portion outlet is connected with two grades of graphite cooler lower entrances, and two grades of graphite cooler top exits connect with low pressure drying tower entrance
Connect, dehydration technology drying tower top exit is connected with diaphragm type compressor, after supercharging, be connected with high pressure drying tower entrance, by height
Press dry the dry high pressure chlorination hydrogen of dry top of tower discharging.
The technological process at scene is as follows：By live booster fan attract aqueous 5% within recovery hydrogen chloride gas pass through
PP or GRP pipe are connected with the entrance of hydrogen chloride tail gas surge tank 1, make the moist hydrogen chloride gas in surge tank with 1 ~ 2kg
Pressure pass through one-level graphite cooler and two grades of graphite coolers respectively；
One-level graphite cooler can be such that the moisture content in moist hydrogen chloride takes off within 0.5% using 5 DEG C of cooling waters；Two grades of stones
Black -35 DEG C of chilled brines of cooler use, can be such that the moisture content in moist hydrogen chloride takes off to 500ppm；
Then water content 500ppm moist hydrogen chloride is passed sequentially through into low pressure drying tower, diaphragm type compressor and height to press dry
Dry tower.Low pressure drying tower uses ZGS anti-acid molecular sieves, operation temperature：Normal temperature, operating pressure：1~2kg；Diaphragm type compressor will
Moist hydrogen chloride is pressurized to 10 ~ 40kg under normal temperature；High pressure drying tower is using the serial anti-acid molecular sieves of AW, operation temperature：Often
Temperature, operating pressure：10~40kg.
Experiment is proved：By said apparatus moisture content in the hydrogen chloride tail gas of recovery can be removed within 5ppm.
Claims (7)
1. a kind of dehydration device for hydrogen chloride tail gas, it is characterised in that：Including at least 2 grades graphite cooling being sequentially connected in series
Device, low pressure drying tower (4), compressor, high pressure drying tower (6)；
2 grades of graphite coolers are followed successively by 5 DEG C of aquadag coolers (2) of one-level, two grades of -35 DEG C of salt solution graphite coolers (3).
2. it is used for the dehydration device of hydrogen chloride tail gas according to claim 1, it is characterised in that：Described 5 DEG C of aquadags of one-level
Hydrogen chloride tail gas surge tank (1) is additionally provided with before cooler.
3. it is used for the dehydration device of hydrogen chloride tail gas according to claim 1, it is characterised in that：The low pressure drying tower is resistance to
Acid type molecular sieve drying tower, its operating pressure is 1 ~ 2 kilogram.
4. it is used for the dehydration device of hydrogen chloride tail gas according to claim 3, it is characterised in that：The work of the low pressure drying tower
Make temperature for normal temperature.
5. it is used for the dehydration device of hydrogen chloride tail gas according to claim 1, it is characterised in that：The high pressure drying tower is acidproof
Type molecular sieve drying tower, its operating pressure is 10 ~ 40 kilograms.
6. it is used for the dehydration device of hydrogen chloride tail gas according to claim 5, it is characterised in that：The work of the high pressure drying tower
Make temperature for normal temperature.
7. it is used for the dehydration device of hydrogen chloride tail gas according to claim 1, it is characterised in that：The compressor is barrier film pressure
Contracting machine (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620806381.7U CN206404547U (en) | 2016-07-28 | 2016-07-28 | A kind of dehydration device for hydrogen chloride tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620806381.7U CN206404547U (en) | 2016-07-28 | 2016-07-28 | A kind of dehydration device for hydrogen chloride tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206404547U true CN206404547U (en) | 2017-08-15 |
Family
ID=59547582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620806381.7U Active CN206404547U (en) | 2016-07-28 | 2016-07-28 | A kind of dehydration device for hydrogen chloride tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107961649A (en) * | 2017-11-30 | 2018-04-27 | 南通星球石墨设备有限公司 | A kind of HCl gas-drying systems |
-
2016
- 2016-07-28 CN CN201620806381.7U patent/CN206404547U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107961649A (en) * | 2017-11-30 | 2018-04-27 | 南通星球石墨设备有限公司 | A kind of HCl gas-drying systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220718 Address after: 215152 No. 6 Anmin Road, Panyang Industrial Park, Huangdi Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: SUZHOU JINHONG GAS Co.,Ltd. Address before: 223001 Hongze salt chemical industry zone, Huai'an City, Jiangsu Province (north of Guoqiao road and east of Hongyan Road) Patentee before: JINHONG GAS ELECTRONIC MATERIAL (HUAIAN) Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 215000 Anmin Road, Panyang Industrial Park, Huangdai Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: Jinhong Gas Co.,Ltd. Address before: 215152 No. 6 Anmin Road, Panyang Industrial Park, Huangdi Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: SUZHOU JINHONG GAS Co.,Ltd. |
|
| CP03 | Change of name, title or address |