CN106955567A - A kind of hydrogen chloride combination drying system - Google Patents
A kind of hydrogen chloride combination drying system Download PDFInfo
- Publication number
- CN106955567A CN106955567A CN201710214551.1A CN201710214551A CN106955567A CN 106955567 A CN106955567 A CN 106955567A CN 201710214551 A CN201710214551 A CN 201710214551A CN 106955567 A CN106955567 A CN 106955567A
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- Prior art keywords
- sulfuric acid
- hydrogen chloride
- drying
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- tower
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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
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
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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
- B01D53/26—Drying gases or vapours
-
- 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
- B01D53/26—Drying gases or vapours
- B01D53/263—Drying gases or vapours by absorption
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/01—Chlorine; Hydrogen chloride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a kind of hydrogen chloride combination drying system, including secondary water-cooling tower, cooling column, one-level chilled brine cooling tower, two grades of chilled brine cooling towers, three-level chilled brine cooling tower, one-level concentrated sulfuric acid drying tower and the two grades of concentrated sulfuric acid drying towers being sequentially connected by pipeline；The first demister is connected with by pipeline between the three-level chilled brine cooling tower and the cold one-level concentrated sulfuric acid drying tower.Hydrogen chloride gas is dried using combination technique by the present invention, overcomes the defect of single dry technology water removal effect difference, good by this combination drying technology hydrogen chloride water removal effect, and before the following group drying mode is entered, can be reduced vapour-liquid using demister and be carried secretly；After two grades of sulfuric acid are dried, sulfuric acid content reduction, by into sulfate system chlorination sulfonic acid remove water, both improve sulfuric acid content, hydrogen chloride gas discharged again, while reducing the quantity of Waste Sulfuric Acid after drying.
Description
Technical field
The invention belongs to hydrogen chloride technical field of drying, more particularly to a kind of hydrogen chloride combination drying system.
Background technology
ADMP (2- amino-4,6-dimethoxy pyrimidines) is a kind of important pesticide intermediate, is ultra high efficiency sulfonylurea
Bensulfuron-methyl, nicosulfuron, AC322140, ethoxysulfuron, rimsulfuron, amidosulfuron, flazasulfuron, chlorine pyrrole are phonetic
The important intermediate of more than ten kinds such as sulphur is grand, azimsulfuron, pyrazosulfuron.Hydrogen chloride as synthesis ADMP base stocks it
One, it is aqueous in hydrogen chloride to have considerable influence to yield.Existing dry water removal techniques have：Deep cooling water removal, adsorption dewatering, the concentrated sulfuric acid
Dry etc., hydrogen chloride water removal effect can not be all reached well using single drying water removal techniques.
The content of the invention
It is an object of the present invention to provide a kind of hydrogen chloride combination drying system, using combination drying technology to hydrogen chloride
Gas is dried, and overcomes the defect of single dry technology water removal effect difference, is removed water and imitated by this combination drying technology hydrogen chloride
It is really good.
In order to solve the above-mentioned technical problem, the technical scheme is that：A kind of hydrogen chloride combination drying system, including it is logical
Cross secondary water-cooling tower, cooling column, one-level chilled brine cooling tower, two grades of chilled brine cooling towers, three-levels that pipeline is sequentially connected
Chilled brine cooling tower, one-level concentrated sulfuric acid drying tower and two grades of concentrated sulfuric acid drying towers.
As the preferred embodiment of above-mentioned technical proposal, a kind of hydrogen chloride combination drying system provided in an embodiment of the present invention
System further comprises the part or all of of following technical characteristic：
As the improvement of above-mentioned technical proposal, in one embodiment of the invention, in three-level chilled brine cooling
The first demister is connected with by pipeline between tower and the cold one-level concentrated sulfuric acid drying tower.
It is used as the improvement of above-mentioned technical proposal, in one embodiment of the invention, two grades of concentrated sulfuric acid drying towers
Gas outlet is connected with the second demister by pipeline, and the gas outlet of second demister is connected to hydrogen chloride gas by pipeline
Surge tank.
As the improvement of above-mentioned technical proposal, in one embodiment of the invention, the secondary water-cooling tower, cooling column,
One-level chilled brine cooling tower, two grades of chilled brine cooling towers, the liquid outlet of three-level chilled brine cooling tower and the first demister
Hydrochloric acid receiving tank is connected to by pipeline respectively.
It is used as the improvement of above-mentioned technical proposal, in one embodiment of the invention, the one-level concentrated sulfuric acid drying tower, two
The liquid outlet of level concentrated sulfuric acid drying tower is connected to dilute sulfuric acid surge tank by pipeline, and the dilute sulfuric acid surge tank passes through pipeline point
The sulfuric acid inlet of one-level concentrated sulfuric acid drying tower, two grades of concentrated sulfuric acid drying towers is not connected to.
As the improvement of above-mentioned technical proposal, in one embodiment of the invention, in the dilute sulfuric acid surge tank and one
The first cooling column is provided with level concentrated sulfuric acid drying tower, the connecting line of the sulfuric acid inlet of two grades of concentrated sulfuric acid drying towers.
It is in one embodiment of the invention, described also including chlorosulfonic acid surge tank as the improvement of above-mentioned technical proposal
Chlorosulfonic acid surge tank is connected on the pipeline between the dilute sulfuric acid surge tank and first cooling column by pipeline.
As the improvement of above-mentioned technical proposal, in one embodiment of the invention, the dilute sulfuric acid surge tank passes through pipe
Road is connected with dilute sulfuric acid receiving tank.
Compared with prior art, the present invention has the advantages that：The present invention is using combination technique to hydrogen chloride gas
It is dried, overcomes the defect of single dry technology water removal effect difference, it is good by this combination drying technology hydrogen chloride water removal effect,
And before the following group drying mode is entered, can reduce vapour-liquid using demister and carry secretly；After two grades of sulfuric acid are dried, sulfuric acid content reduction,
By into sulfate system chlorination sulfonic acid remove water, both improve sulfuric acid content, hydrogen chloride gas discharged again, while reducing dry
The quantity of dry rear Waste Sulfuric Acid.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet for hydrogen chloride combination drying system that the present invention is provided.
Mark in accompanying drawing for：Bis- water-cooling towers of 1-, 2- cooling columns, 3- one-level chilled brine cooling towers, bis- grades of freezings of 4-
Brine cooling tower, 5- three-level chilled brine cooling towers, 6- one-level concentrated sulfuric acid drying towers, bis- grades of concentrated sulfuric acid drying towers of 7-, 8- first
Demister, the demisters of 9- second, 10- hydrogen chloride gas surge tanks, 11- hydrochloric acid receiving tanks, 12- dilute sulfuric acid surge tanks, 13- chlorine sulphurs
Acid buffering tank, 14- dilute sulfuric acid receiving tanks, the cooling columns of 15- first.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
A kind of hydrogen chloride combination drying system, as shown in figure 1, including the secondary water-cooling tower 1, cold being sequentially connected by pipeline
Water tower 2, one-level chilled brine cooling tower 3, two grades of chilled brine cooling towers 4, three-level chilled brine cooling tower 5, one-level concentrated sulfuric acids
Drying tower 6 and two grades of concentrated sulfuric acid drying towers 7.
Further, pipe is passed through between the three-level chilled brine cooling tower 4 and the cold one-level concentrated sulfuric acid drying tower 6
Road is connected with the first demister 8.The use of first demister 8, can reduce vapour-liquid entrainment.
The gas outlet of two grades of concentrated sulfuric acid drying towers 7 is connected with the second demister 9, second demister by pipeline
9 gas outlet is connected to hydrogen chloride gas surge tank 10 by pipeline.The use of second demister 9, can reduce vapour-liquid entrainment.
The hydrogen chloride combination drying system of the present invention, hydrogen chloride gas is passed sequentially through after secondary water, cold water cooling, then is passed through
Three-level chilled brine cools, and two-stage sulfuric acid is carried out after then removing the partially liq carried secretly in hydrogen chloride gas through the first demister
Dry, dry hydrogen chloride gas is obtained after finally removing the liquid carried secretly in hydrogen chloride gas through the second demister again.
The secondary water-cooling tower 1, cooling column 2, one-level chilled brine cooling tower 3, two grades of chilled brine cooling towers 4, three-levels
The liquid outlet of the bottom of 5 and first demister of chilled brine cooling tower 8 is connected to hydrochloric acid receiving tank 11 by pipeline respectively.Hydrochloric acid connects
Closed cans 11 can reclaim hydrogen chloride gas cool dry after the hydrochloric acid that is formed.
The one-level concentrated sulfuric acid drying tower 6, the liquid outlet of two grades of concentrated sulfuric acid drying towers 7 are connected to dilute sulfuric acid by pipeline
Surge tank 12, the dilute sulfuric acid surge tank 12 is respectively connecting to one-level concentrated sulfuric acid drying tower 6, two grades of concentrated sulfuric acids by pipeline and dried
The sulfuric acid inlet of tower 7.
Specifically, in the dilute sulfuric acid surge tank 12 and one-level concentrated sulfuric acid drying tower 6, the sulphur of two grades of concentrated sulfuric acid drying towers 7
The first cooling column 15 is provided with the connecting line of sour inlet.
Further, also including chlorosulfonic acid surge tank 13, the chlorosulfonic acid surge tank 13 is connected to described dilute by pipeline
On pipeline between sulfuric acid surge tank 12 and first cooling column 15.The water that chlorosulfonic acid can be gone in sulfuric acid is added, is reduced useless
The generation of sulfuric acid.The dilute sulfuric acid surge tank 12 is connected with dilute sulfuric acid receiving tank 14 by pipeline.Dilute sulfuric acid receiving tank 14 is used for
Dilute sulfuric acid after recovery is dried.
Freeze-drying condensate liquid returns to hydrogen chloride preparation system；After two grades of sulfuric acid are dried, sulfuric acid content reduction, to sulfuric acid system
Chlorination sulfonic acid is removed water in system, had both improved the content of sulfuric acid, hydrogen chloride gas is discharged again, while reducing Waste Sulfuric Acid after drying
Quantity.
The above is the preferred embodiment of the present invention, can not limit the right model of the present invention with this certainly
Enclose, it is noted that for those skilled in the art, under the premise without departing from the principles of the invention, may be used also
To make some improvement and variation, these are improved and variation is also considered as protection scope of the present invention.
Claims (8)
1. a kind of hydrogen chloride combination drying system, it is characterised in that：Including be sequentially connected by pipeline secondary water-cooling tower, cold water
Tower, one-level chilled brine cooling tower, two grades of chilled brine cooling towers, three-level chilled brine cooling tower, one-level concentrated sulfuric acid drying towers
With two grades of concentrated sulfuric acid drying towers.
2. hydrogen chloride combination drying system according to claim 1, it is characterised in that：In three-level chilled brine cooling
The first demister is connected with by pipeline between tower and the cold one-level concentrated sulfuric acid drying tower.
3. hydrogen chloride combination drying system according to claim 2, it is characterised in that：Two grades of concentrated sulfuric acid drying towers
Gas outlet is connected with the second demister by pipeline, and the gas outlet of second demister is connected to hydrogen chloride gas by pipeline
Surge tank.
4. hydrogen chloride combination drying system according to claim 3, it is characterised in that：The secondary water-cooling tower, cooling column,
One-level chilled brine cooling tower, two grades of chilled brine cooling towers, the liquid outlet of three-level chilled brine cooling tower and the first demister
Hydrochloric acid receiving tank is connected to by pipeline respectively.
5. hydrogen chloride combination drying system according to claim 4, it is characterised in that：The one-level concentrated sulfuric acid drying tower,
The liquid outlet of two grades of concentrated sulfuric acid drying towers is connected to dilute sulfuric acid surge tank by pipeline, and the dilute sulfuric acid surge tank passes through pipeline
It is respectively connecting to the sulfuric acid inlet of one-level concentrated sulfuric acid drying tower, two grades of concentrated sulfuric acid drying towers.
6. hydrogen chloride combination drying system according to claim 5, it is characterised in that：In the dilute sulfuric acid surge tank and one
The first cooling column is provided with level concentrated sulfuric acid drying tower, the connecting line of the sulfuric acid inlet of two grades of concentrated sulfuric acid drying towers.
7. hydrogen chloride combination drying system according to claim 6, it is characterised in that：Also include chlorosulfonic acid surge tank, institute
Chlorosulfonic acid surge tank is stated to be connected on the pipeline between the dilute sulfuric acid surge tank and first cooling column by pipeline.
8. the hydrogen chloride combination drying system according to any one of claim 5-7, it is characterised in that：The dilute sulfuric acid delays
Rush tank and dilute sulfuric acid receiving tank is connected with by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710214551.1A CN106955567A (en) | 2017-04-01 | 2017-04-01 | A kind of hydrogen chloride combination drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710214551.1A CN106955567A (en) | 2017-04-01 | 2017-04-01 | A kind of hydrogen chloride combination drying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106955567A true CN106955567A (en) | 2017-07-18 |
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ID=59484839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710214551.1A Pending CN106955567A (en) | 2017-04-01 | 2017-04-01 | A kind of hydrogen chloride combination drying system |
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| CN (1) | CN106955567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114555517A (en) * | 2019-11-13 | 2022-05-27 | 株式会社德山 | Method for dehumidifying hydrogen chloride |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57203055A (en) * | 1981-06-05 | 1982-12-13 | Tokuyama Soda Co Ltd | Preparation of chlorosulfonic acid |
| CN1433958A (en) * | 2002-01-25 | 2003-08-06 | 黑龙江齐化化工有限责任公司 | Process for purifying hydrogen chloride |
| CN102530873A (en) * | 2011-12-21 | 2012-07-04 | 河南尚宇新能源股份有限公司 | Equipment and technology for hydrogen chloride dehydration |
-
2017
- 2017-04-01 CN CN201710214551.1A patent/CN106955567A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57203055A (en) * | 1981-06-05 | 1982-12-13 | Tokuyama Soda Co Ltd | Preparation of chlorosulfonic acid |
| CN1433958A (en) * | 2002-01-25 | 2003-08-06 | 黑龙江齐化化工有限责任公司 | Process for purifying hydrogen chloride |
| CN102530873A (en) * | 2011-12-21 | 2012-07-04 | 河南尚宇新能源股份有限公司 | Equipment and technology for hydrogen chloride dehydration |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114555517A (en) * | 2019-11-13 | 2022-05-27 | 株式会社德山 | Method for dehumidifying hydrogen chloride |
| CN114555517B (en) * | 2019-11-13 | 2024-05-14 | 株式会社德山 | Method for dehumidifying hydrogen chloride |
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Application publication date: 20170718 |
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