CN107961649A - A kind of HCl gas-drying systems - Google Patents
A kind of HCl gas-drying systems Download PDFInfo
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- CN107961649A CN107961649A CN201711241718.XA CN201711241718A CN107961649A CN 107961649 A CN107961649 A CN 107961649A CN 201711241718 A CN201711241718 A CN 201711241718A CN 107961649 A CN107961649 A CN 107961649A
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- hydrogen chloride
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- drying
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Drying Of Gases (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of HCl gas-drying systems, including a wet hydrogen chloride inlet manifold；A pair of and column distribution drying tower；A pair of of pneumatic filter；One outlet cell, the outlet cell include dry hydrogen chloride outlet manifold A, a dry hydrogen chloride outlet manifold B；Unit is replaced in one blowback; the blowback protection displacement includes a nitrogen inlet manifold, a dry hydrogen chloride blowback pipeline, a displacement outlet manifold; one spinner flowmeter, nitrogen electric heater are installed on nitrogen inlet manifold, the gas outlet of the nitrogen inlet manifold is connected by nitrogen air intake branch with two dry hydrogen chloride going out gas branch pipe A.The advantage of the invention is that：The setting of unit is replaced by blowback, blowback is carried out to the drying tower after the wet hydrogen chloride gas of drying using hot nitrogen, removes remaining steam etc. in drying tower, avoid because water, oxygen residual cause time hydrogen chloride to produce, it is ensured that the purity of hydrogen chloride.
Description
Technical field
The present invention relates to a kind of hydrogen chloride gas processing unit (plant), more particularly to a kind of HCl gas-drying systems.
Background technology
In the hydrogen chloride gas of chemical synthesis, often containing more steam, it is necessary to do drying process.Traditional method has
With the concentrated sulfuric acid or the direct moisture absorption of other drier, consumption medium is more, and the waste liquid of generation is more, it is necessary to otherwise processed, no
Enough economy.
For above-mentioned phenomenon, a kind of hydrogen chloride drying system is just refer in patent CN105399053A, there is drying
Tower, heating tower, condensing tower, dry the reservoir outlet unicom two of tower bottom pipeline A and pipeline B in parallel, pipeline A is by control
Valve A unicom is to heating tower, and pipeline B is by control valve B unicom to condensing tower.The mixed gas outlet of heating tower has mixture pipe
The mixed gas entrance of road unicom drying tower.The hydrogen chloride drying effect of the present invention is preferable, and the degree of automation is high, except needing heat
Outside source, without adding assist medium, without frequently replacing adsorbent, without three waste discharge, cost is relatively low, caused chlorination
The purity of hydrogen or hydrochloric acid is higher, can be used in other places, remarkable in economical benefits.
And in said structure, it is during hydrogen chloride gas is dried, and wet hydrogen chloride gas is by dry
During dry tower is dried, the moisture content contained in gas can be absorbed by adsorbent, be stayed in drying tower, if in drying tower
There are oxygen, it is easy for so that hydrogen chloride, water, oxygen carry out reaction generation time hydrogen chloride, so may result in dried chlorine
Change and contain time hydrogen chloride impurity in hydrogen, influence the purity of dry hydrogen chloride.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of HCl gas-drying systems, can effectively avoid time chlorination
Hydrogen produces, it is ensured that the purity of hydrogen chloride.
In order to solve the above technical problems, the technical scheme is that：A kind of HCl gas-drying systems, its innovative point exist
In：Including
One air admission unit, the air admission unit include a wet hydrogen chloride inlet manifold；
One drying unit, the drying unit include a pair of and column distribution drying tower, the bottom of the drying tower have one into
Gas port, top has a gas outlet, and the air inlet of two drying towers accesses wet chlorination by a wet hydrogen chloride air intake branch
Hydrogen inlet manifold；
One filter element, the filter element include a pair of of pneumatic filter, have an air inlet, one on the pneumatic filter
Gas outlet；
One outlet cell, the outlet cell include dry hydrogen chloride outlet manifold A, a dry hydrogen chloride outlet manifold B, wherein,
The air inlet of dry hydrogen chloride outlet manifold A is connected by dry hydrogen chloride going out gas branch pipe A with the gas outlet of drying tower, and gas outlet passes through
Dry hydrogen chloride air intake branch is connected with the air inlet of pneumatic filter, and the air inlet of dry hydrogen chloride outlet manifold B is by doing chlorination
Hydrogen going out gas branch pipe B is connected with the gas outlet of pneumatic filter；
Unit is replaced in one blowback, and blowback protection displacement includes a nitrogen inlet manifold, a dry hydrogen chloride blowback pipeline, one puts
Swap out gas manifold, and a spinner flowmeter, nitrogen electric heater, the nitrogen inlet manifold are provided with nitrogen inlet manifold
Gas outlet be connected by nitrogen air intake branch with two dry hydrogen chloride going out gas branch pipe A, the dry hydrogen chloride blowback pipeline into
Gas port is connected with dry hydrogen chloride outlet manifold B, and gas outlet is respectively connected to two dry hydrogen chloride going out gas branch pipe A, the displacement outlet
Manifold is connected with two wet hydrogen chloride air intake branches respectively by replacing going out gas branch pipe.
Further, two drying towers are used alternatingly, while pneumatic control valve is also equipped with air intake branch.
Further, it is additionally provided with a pressure measurement pipeline on the drying tower, the both ends of the pressure measurement pipeline are connected to wet
Hydrogen chloride air intake branch is with dry hydrogen chloride going out gas branch pipe, pressure difference test meter is also equipped with pressure measurement pipeline.
Further, two pneumatic filters are used alternatingly, while are also equipped with ending on dry hydrogen chloride air intake branch
Valve.
Further, two going out gas branch pipe, one of outlet are additionally provided with the gas outlet of the displacement outlet manifold
Branch pipe is connected with absorption plant, another going out gas branch pipe access regenerator condenser, the regenerator condenser has an exhaust
Mouth, an acid discharge mouth, a recirculated water water inlet, a circulating water reclamation mouth, its exhaust outlet access vent gas treatment, the access of acid discharge mouth are useless dilute
Acid tank.
The advantage of the invention is that：In the present invention, the setting of unit is replaced by blowback, it is wet to drying using hot nitrogen
Drying tower after hydrogen chloride gas carries out blowback, removes remaining steam etc. in drying tower, avoid because water, oxygen residual lead
Time hydrogen chloride is caused to produce, it is ensured that the purity of hydrogen chloride, recycles dried dry hydrogen chloride to the drying after blowback into line replacement,
Hot nitrogen in drying tower is replaced away, it is ensured that gas in drying tower it is pure, avoid influencing because of the presence of hot nitrogen
To the pure of hydrogen chloride gas.
By setting two drying towers, and the different keyings of the valve by being set on pipeline, so that two dry
Dry tower can be used alternatingly, i.e., wet hydrogen chloride is dried in a drying tower, another then carries out blowback using hot nitrogen, puts
Change, it is ensured that the drying of wet hydrogen chloride can be carried out with serialization, and the blowback without waiting for drying tower is replaced, and improves work efficiency；And
Two pneumatic filters are set to be carried out also for the serialization of whole process.
For setting pressure measurement pipeline on drying tower, the pressure difference so as to the gas port up and down to drying tower carries out implementation survey
Amount, it is ensured that the stabilization of drying tower work.
For the gas after displacement, absorption plant can be gone to be recycled, can also be after condenser condense, exhaust gas
After being washed by vent gas treatment, spent acid is then collected processing using useless dilute acid bath, avoids directly discharge and environment is caused
Pollution, protects environment.
Brief description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the schematic diagram of the HCl gas-drying systems of the present invention.
Embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this
It is bright to be limited among the embodiment described scope.
A kind of HCl gas-drying systems as shown in Figure 1, including
One air admission unit, the air admission unit include a wet hydrogen chloride inlet manifold 1.
One drying unit, the drying unit include a pair of and column distribution drying tower 2, the bottom of drying tower 2 have one into
Gas port, top has a gas outlet, and the air inlet of two drying towers 2 accesses wet chlorine by a wet hydrogen chloride air intake branch 3
Change hydrogen inlet manifold 1.
Two drying towers 2 are used alternatingly, while are also equipped with pneumatic control valve on wet hydrogen chloride air intake branch 3.
One filter element, the filter element include a pair of of pneumatic filter 5, have an air inlet, one on pneumatic filter 5
Gas outlet.
One outlet cell, the outlet cell include dry hydrogen chloride outlet manifold A6, a dry hydrogen chloride outlet manifold B7, its
In, the air inlet of dry hydrogen chloride outlet manifold A6 is connected by dry hydrogen chloride going out gas branch pipe A8 with the gas outlet of drying tower 2, dry
Be also equipped with pneumatic control valve on hydrogen chloride going out gas branch pipe A8, the gas outlet of dry hydrogen chloride outlet manifold A6 by dry hydrogen chloride into
Gas branch pipe 9 is connected with the air inlet of pneumatic filter 5, and shut-off valve, dry hydrogen chloride are also equipped with dry hydrogen chloride air intake branch 9
The air inlet of outlet manifold B7 is connected by dry hydrogen chloride going out gas branch pipe B10 with the gas outlet of pneumatic filter 5.
Two pneumatic filters 5 are used alternatingly.Then it is to remove dry hydrogen chloride gas by the setting of pneumatic filter 5
Powder in body, improves the purity of dry hydrogen chloride gas, and sets two pneumatic filters 5 to be used alternatingly, also for
The serialization of whole filter process carries out.
Be additionally provided with a pressure measurement pipeline 4 on drying tower 2, the both ends of the pressure measurement pipeline 4 be connected to wet hydrogen chloride into
On gas branch pipe 3 and dry hydrogen chloride going out gas branch pipe 8, and two ports of pressure measurement pipeline 4 are respectively positioned on wet hydrogen chloride air intake branch 3 or dry
Between the pneumatic control valve and drying tower 2 installed in hydrogen chloride going out gas branch pipe 8, differential pressure measurement is also equipped with pressure measurement pipeline 4
Instrument.For setting pressure measurement pipeline 4 on drying tower 2, the pressure difference so as to the gas port up and down to drying tower 2 carries out implementation measurement,
Ensure the stabilization that drying tower 2 works.
Unit is replaced in one blowback, and blowback protection displacement includes a nitrogen inlet manifold 11, a dry hydrogen chloride blowback pipeline
12nd, a displacement outlet manifold 13,11 are provided with a spinner flowmeter 14, nitrogen electric heater 15, nitrogen on nitrogen inlet manifold
The gas outlet of gas inlet manifold 11 is connected by nitrogen air intake branch 16 with two dry hydrogen chloride going out gas branch pipe A8, in nitrogen air inlet
Pneumatic control valve, the air inlet of dry hydrogen chloride blowback pipeline 12 and dry hydrogen chloride outlet manifold B7 phases are also equipped with branch pipe 16
Even, the gas outlet of dry hydrogen chloride blowback pipeline 12 is respectively connected to two dry hydrogen chloride going out gas branch pipe A8, in dry hydrogen chloride anti-blowpipe
Be provided with road 12 ball valve, check-valves and with two corresponding pneumatic control valves of dry hydrogen chloride going out gas branch pipe A8, displace
Gas manifold 13 is connected with two wet hydrogen chloride air intake branches 3 respectively by replacing going out gas branch pipe 17, and replaces going out gas branch pipe 17
Port is located between the pneumatic control valve on wet hydrogen chloride air intake branch 3 and the port of pressure measurement pipeline 4, in displacement going out gas branch pipe 17
On be also equipped with pneumatic control valve.
By setting two drying towers 2, and pass through the pneumatic control valve on wet hydrogen chloride air intake branch 3, nitrogen air inlet branch
The different keyings of pneumatic control valve on pipe 16, so that two drying towers 2 can be used alternatingly, i.e. a drying tower 2
Wet hydrogen chloride is dried, another drying tower 2 then carries out blowback, displacement using hot nitrogen, it is ensured that the drying of wet hydrogen chloride
It can be carried out with serialization, the blowback without waiting for drying tower 2 is replaced, and improves work efficiency.
Two going out gas branch pipe 18 are additionally provided with the gas outlet of displacement outlet manifold 13, one of going out gas branch pipe 18 is with inhaling
Receiving apparatus is connected, another going out gas branch pipe 18 access regenerator condenser 19, regenerator condenser 19 has an exhaust outlet, a row
Sour mouth, a recirculated water water inlet, a circulating water reclamation mouth, the exhaust outlet access vent gas treatment of regenerator condenser 19, acid discharge mouth
The useless dilute acid bath of access.For the gas after displacement, absorption plant can be gone to be recycled, condenser can also be passed through and condensed
Afterwards, after exhaust gas is washed by vent gas treatment, spent acid is then collected processing using useless dilute acid bath, avoid directly discharge and to ring
Border pollutes, and protects environment.
Operation principle：Wet hydrogen chloride gas is passed through into whole system from wet hydrogen chloride inlet manifold 1, first by one of them
Pneumatic control valve on drying tower 2 is opened, another is remained turned-off so that wet hydrogen chloride gas enters one of drying tower 2
Inside it is dried, is changed into dry hydrogen chloride gas, and enter dry hydrogen chloride outlet manifold from corresponding dry hydrogen chloride going out gas branch pipe A8
In A6, and send to being filtered in one of pneumatic filter 5, remove the impurity such as the dust that may wherein contain, finally from
Dry hydrogen chloride going out gas branch pipe B10 imports dry hydrogen chloride outlet manifold B7.
Adjusted after dry certain time or a certain amount of wet hydrogen chloride gas, then by pneumatic on another drying tower 2
Valve is opened, and the pneumatic control valve originally opened is closed, and wet hydrogen chloride gas is sent into another drying tower 2 and is done
It is dry, nitrogen is then passed through into whole system from nitrogen inlet manifold 11, and the air inlet of nitrogen is controlled using spinner flowmeter 14
Amount, heats the nitrogen passed through using nitrogen electric heater 15, and hot nitrogen enters from nitrogen air intake branch 16 stops drying
Drying tower 2, carry out blowback, the remaining gas in drying tower 2 be discharged into displacement outlet manifold 13 from displacement going out gas branch pipe 17
Interior, after a certain amount of hot nitrogen is passed through, then the dry hydrogen chloride gas of introducing portion enters out of dry hydrogen chloride outlet manifold B7
In the drying tower 2, hot nitrogen is also displaced out of drying tower 2, ensures only to leave dry hydrogen chloride gas in drying tower 2.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also have
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
It is defined by the appending claims and its equivalent thereof.
Claims (5)
- A kind of 1. HCl gas-drying systems, it is characterised in that：IncludingOne air admission unit, the air admission unit include a wet hydrogen chloride inlet manifold；One drying unit, the drying unit include a pair of and column distribution drying tower, the bottom of the drying tower have one into Gas port, top has a gas outlet, and the air inlet of two drying towers accesses wet chlorination by a wet hydrogen chloride air intake branch Hydrogen inlet manifold；One filter element, the filter element include a pair of of pneumatic filter, have an air inlet, one on the pneumatic filter Gas outlet；One outlet cell, the outlet cell include dry hydrogen chloride outlet manifold A, a dry hydrogen chloride outlet manifold B, wherein, The air inlet of dry hydrogen chloride outlet manifold A is connected by dry hydrogen chloride going out gas branch pipe A with the gas outlet of drying tower, and gas outlet passes through Dry hydrogen chloride air intake branch is connected with the air inlet of pneumatic filter, and the air inlet of dry hydrogen chloride outlet manifold B is by doing chlorination Hydrogen going out gas branch pipe B is connected with the gas outlet of pneumatic filter；Unit is replaced in one blowback, and blowback protection displacement includes a nitrogen inlet manifold, a dry hydrogen chloride blowback pipeline, one puts Swap out gas manifold, and a spinner flowmeter, nitrogen electric heater, the nitrogen inlet manifold are provided with nitrogen inlet manifold Gas outlet be connected by nitrogen air intake branch with two dry hydrogen chloride going out gas branch pipe A, the dry hydrogen chloride blowback pipeline into Gas port is connected with dry hydrogen chloride outlet manifold B, and gas outlet is respectively connected to two dry hydrogen chloride going out gas branch pipe A, the displacement outlet Manifold is connected with two wet hydrogen chloride air intake branches respectively by replacing going out gas branch pipe.
- 2. HCl gas-drying systems according to claim 1, it is characterised in that：Two drying towers are used alternatingly, while Pneumatic control valve is also equipped with air intake branch.
- 3. HCl gas-drying systems according to claim 1, it is characterised in that：A survey is additionally provided with the drying tower Pressure pipe road, the both ends of the pressure measurement pipeline are connected in wet hydrogen chloride air intake branch and dry hydrogen chloride going out gas branch pipe, in pressure measurement Pressure difference test meter is also equipped with pipeline.
- 4. HCl gas-drying systems according to claim 1, it is characterised in that：Two pneumatic filters are used alternatingly, together Shut-off valve is also equipped with Shi Gan hydrogen chloride air intake branches.
- 5. HCl gas-drying systems according to claim 1, it is characterised in that：The gas outlet of the displacement outlet manifold Place is additionally provided with two going out gas branch pipe, and one of going out gas branch pipe is connected with absorption plant, the access regeneration of another going out gas branch pipe Device condenser, the regenerator condenser have an exhaust outlet, an acid discharge mouth, a recirculated water water inlet, a circulating water reclamation mouth, Its exhaust outlet accesses vent gas treatment, the useless dilute acid bath of acid discharge mouth access.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711241718.XA CN107961649A (en) | 2017-11-30 | 2017-11-30 | A kind of HCl gas-drying systems |
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| CN201711241718.XA CN107961649A (en) | 2017-11-30 | 2017-11-30 | A kind of HCl gas-drying systems |
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| CN107961649A true CN107961649A (en) | 2018-04-27 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898068A (en) * | 2010-07-26 | 2010-12-01 | 四川开元科技有限责任公司 | Method for removing moisture from chloroethylene or gas mixture with chloroethylene |
| CN103173256A (en) * | 2013-04-18 | 2013-06-26 | 四川科比科油气工程有限公司 | Natural gas multi-tower external cycle anaerobic regeneration dewatering method |
| CN103588173A (en) * | 2013-11-05 | 2014-02-19 | 太仓中化环保化工有限公司 | Method for purifying byproduct hydrogen chloride in fluorinated alkane production |
| CN105251321A (en) * | 2015-11-13 | 2016-01-20 | 北京中科瑞奥能源科技股份有限公司 | Dehydration method of coalbed methane and dehydration system |
| CN206404547U (en) * | 2016-07-28 | 2017-08-15 | 金宏气体电子材料（淮安）有限责任公司 | A kind of dehydration device for hydrogen chloride tail gas |
| CN207734799U (en) * | 2017-11-30 | 2018-08-17 | 南通星球石墨设备有限公司 | A kind of HCl gas-drying systems |
-
2017
- 2017-11-30 CN CN201711241718.XA patent/CN107961649A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898068A (en) * | 2010-07-26 | 2010-12-01 | 四川开元科技有限责任公司 | Method for removing moisture from chloroethylene or gas mixture with chloroethylene |
| CN103173256A (en) * | 2013-04-18 | 2013-06-26 | 四川科比科油气工程有限公司 | Natural gas multi-tower external cycle anaerobic regeneration dewatering method |
| CN103588173A (en) * | 2013-11-05 | 2014-02-19 | 太仓中化环保化工有限公司 | Method for purifying byproduct hydrogen chloride in fluorinated alkane production |
| CN105251321A (en) * | 2015-11-13 | 2016-01-20 | 北京中科瑞奥能源科技股份有限公司 | Dehydration method of coalbed methane and dehydration system |
| CN206404547U (en) * | 2016-07-28 | 2017-08-15 | 金宏气体电子材料（淮安）有限责任公司 | A kind of dehydration device for hydrogen chloride tail gas |
| CN207734799U (en) * | 2017-11-30 | 2018-08-17 | 南通星球石墨设备有限公司 | A kind of HCl gas-drying systems |
Non-Patent Citations (1)
| Title |
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| 战树麟: "合成氨弛放气变压吸附提浓技术", 石油工业出版社, pages: 241 * |
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