CN108862213A - Nitrogen purification tail gas recycling system - Google Patents
Nitrogen purification tail gas recycling system Download PDFInfo
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- CN108862213A CN108862213A CN201810961652.XA CN201810961652A CN108862213A CN 108862213 A CN108862213 A CN 108862213A CN 201810961652 A CN201810961652 A CN 201810961652A CN 108862213 A CN108862213 A CN 108862213A
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- nitrogen
- pipeline
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- branch pipes
- recycling
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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
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/045—Physical processing only by adsorption in solids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0062—Water
Abstract
The present invention provides a kind of nitrogen purification tail gas recycling system,More particularly to nitrogen technical field processed,Including the first cooler,Steam-water separator,First recycling drier,Second recycling drier and the first nitrogen gas tank,First pipe is connected with the first cooler,First cooler is connected with steam-water separator by pipeline,Steam-water separator gas outlet connects second pipe,Second pipe is connected with two the first branch pipes respectively,Two the first branch pipes are connected with the first recycling drier and the second recycling drier respectively,First recycling drier and the second recycling drier are separately connected third branch pipe,Third branch pipe is connected with the 4th pipeline,4th pipeline is equipped with the reflux line communicated therewith,The reflux line other end connects two the 4th branch pipes,Two the 4th branch pipes are connected with two third branch pipes respectively,4th pipeline is connected with the first nitrogen gas tank air inlet.The present invention has the advantages of regeneration tail gas that nitrogen purifier can be discharged recycles, reduces energy consumption.
Description
Technical field
The invention belongs to nitrogen technical fields processed, and in particular to a kind of nitrogen purification tail gas recycling system.
Background technique
It is a kind of gas of colorless and odorless under nitrogen usual condition, aerial content is about 78%, is contained in air
Highest gas is measured, it is inexhaustible, it is inexhaustible.The chemical property torpescence of nitrogen is difficult under room temperature to occur with other substances
Reaction.Due to the chemical inertness of nitrogen, it is often used as protective gas, the fruit and vegetable that can be used for food service industry is fresh-keeping, golden
Protection heat treatment, the sealing nitrogen of chemical industry and accident nitrogen, Chinese medicine anti-corrosion, the tealeaves for belonging to machinery industry protect many sides such as color
Face.In various nitrogen producing crafts, using air as raw material, using pressure-variable adsorption mode nitrogen be most common nitrogen mode processed it
One, it is extractable to obtain the nitrogen of 99% or more purity.In general, the nitrogen of the purity can meet the use gas mark of most users
It is quasi-.But for industries such as food, beer, beverage, pharmacy, Precision Machinings, it is desirable that finished product nitrogen is sterile, free from extraneous odour, dustless etc., just
Further purified treatment is carried out to nitrogen, final nitrogen gas purity can reach 99.999%~99.9999% after processing.
For general nitrogen caused by swing adsorption nitrogen producing apparatus, further purified treatment be High Purity Nitrogen there are many ways to,
Wherein " deoxidization by adding hydrogen " is one of most common technique.This kind of method be in the presence of a catalyst, it is miscellaneous in general nitrogen
Matter oxygen and hydrogen reaction generate steam, and big portion's steam is discharged after condensing, after freeze-drying, the nitrogen that tentatively removes water
Into the adsorption dehumifier being made of two towers.The work of one tower, tower regeneration, the work of two cone pulleys kind have company after depth removes water
Continuous high pure nitrogen outflow.In drier in adsorbent regenerative process, need to be passed through again with about 10% or so high pure nitrogen
Raw tower is purged, and the steam parsed out of adsorbent in heating process is blown out drier.As device regenerative process
The tail gas of middle generation, the nitrogen of the partially aqueous vapour usually directly exhaust.Due to only containing some steam in the part nitrogen,
If removed the steam in gas by processing unit, and the portion gas is recycled, can be saved compared to directly exhausting
The about energy consumption of nitrogen gas generating system 10% or so.
Therefore, the regeneration tail gas for being badly in need of a kind of pair of nitrogen purifier is recycled, and saves the nitrogen cost processed of system
Nitrogen purification tail gas recycling system.
Summary of the invention
In order to solve the problem of that the regeneration tail gas of existing nitrogen purifier discharge is directly exhausted and cannot be recycled, this
The purpose of invention is to provide a kind of nitrogen purification tail gas recycling system, has the regeneration tail that nitrogen purifier can be discharged
The advantages of gas recycles, and reduces energy consumption.
The present invention provides the following technical solutions：
A kind of nitrogen purification tail gas recycling system, including the first cooler, steam-water separator, the first recycling drying
Device, the second recycling drier and the first nitrogen gas tank, the first pipe of regeneration tail gas air inlet is connected with first cooler, described
First cooler is connected with the steam-water separator by pipeline, and the steam-water separator gas outlet connects second pipe, described
Second pipe is connected with two the first branch pipes respectively, and two first branch pipes recycle drier and institute with described first respectively
The air inlet for stating the second recycling drier is connected, and is separately connected the second branch pipe on two first branch pipes, and described second
Third pipeline described in Guan Junyu is connected, and the outlet side of the first recycling drier and the second recycling drier connects respectively
Third branch pipe is connect, the third branch pipe is connected with the 4th pipeline, and the 4th pipeline is equipped with the return pipe communicated therewith
Road, the other end of the reflux line connect two the 4th branch pipes, two the 4th branch pipes respectively with two third branch
Pipe is connected, and the 4th pipeline is connected with the first nitrogen gas tank air inlet, is also connected with that there are two the on the 4th pipeline
Five branch pipes, the 5th branch pipe are located at the two sides of the third branch pipe and the 4th pipeline junction, first nitrogen gas tank
Gas outlet be connected with the 5th pipeline.
Preferably, the outside of the first pipe is also cased with cooling water pipe.
Preferably, the bottom of first cooler and the steam-water separator is respectively connected with electronic drainage device, and described
The bottom end of one recycling drier and the second recycling drier is respectively connected with shredded meat ball valve, is all provided on two first branch pipes
There is the first pneumatic operated valve, the second pneumatic operated valve is equipped on two second branch pipes, is equipped with third on two third branch pipes
Pneumatic operated valve is equipped with the 4th pneumatic operated valve and first pressure gauge on two the 4th branch pipes, and the reflux line is along reflux direction
It is successively arranged the first shut-off valve, second pressure gauge and first flowmeter, the 5th branch pipe is equipped with the second shut-off valve, and described the
Third shut-off valve, third pressure gauge and second flowmeter are successively arranged on four pipelines.
Preferably, the top of first nitrogen gas tank is equipped with safety valve, and the bottom end of first nitrogen gas tank is equipped with blowdown valve.
Preferably, first cooler selects shell and tube cooler.
The beneficial effects of the invention are as follows：The nitrogen purification tail gas recycling system that the present invention is developed, is by normal
Regulation nitrogen system technique improves, and the aqueous tail gas that nitrogen purifier direct emission in common process is fallen is carried out recycling benefit
With, it can tentatively be cooled down by tube-cooled to regeneration tail gas, gas is then passed through the first cooler and steam-water separator,
Most of water in regeneration tail gas is removed, depth in gas device for purifying and treating tail gas is finally removed water into drying, after water removal recycling
Nitrogen buffered by the first nitrogen gas tank, the swing adsorption nitrogen producing apparatus that can be supplied to prime uses as blowback air, transformation inhaled
The oxygen blowout adsorption tower parsed during attached nitrogen processed, during the nitrogen purification of pressure varying adsorption nitrogen making system, purifying
The regenerated gas consumption of device is about the 10% of gas production, and after this part nitrogen is recycled, the energy consumption of entire nitrogen gas generating system can
It is corresponding to reduce by 10% or so, so as to save the production run cost of whole system.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is structural schematic diagram when the invention works；
In figure label for：1, the first cooler；2, steam-water separator；3, the first recycling drier；4, the second recycling drying
Device；5, the first nitrogen gas tank；6, cooling water pipe；10, first pipe；20, second pipe；21, the first branch pipe；22, the second branch pipe；
23, third pipeline；30, the 4th pipeline；31, third branch pipe；32, reflux line；33, the 4th branch pipe；40, the 5th branch pipe；50,
Five pipelines；100, swing adsorption nitrogen producing apparatus；200, the first adsorption tower；300, the second adsorption tower；400, the second nitrogen gas tank；
1000, nitrogen purifier；2000, premixing tank；3000, oxygen-eliminating device；4000, the second cooler；5000, cooling driers；6000,
One purifying drier；7000, the second purifying drier；A, electronic drainage device；B, shredded meat ball valve；C, the first pneumatic operated valve；D, second
Pneumatic operated valve；E, third pneumatic operated valve；F, the 4th pneumatic operated valve；G, first pressure gauge；H, the first shut-off valve；I, second pressure gauge；J,
Flow meters；K, the second shut-off valve；L, third shut-off valve；M, third pressure gauge；N, second flowmeter；O, safety valve；P, blowdown
Valve；A, regeneration tail gas；B, pure nitrogen gas；C, compressed air；D, high pure nitrogen.
Specific embodiment
A specific embodiment of the invention is described with reference to the accompanying drawing.
As shown in Figure 1, a kind of nitrogen purification tail gas recycling system, including the first cooler 1, steam-water separator 2,
One recycling drier 3, second recycles drier 4 and the first nitrogen gas tank 5, the first pipe 10 of regeneration tail gas a air inlet and first cold
But device 1 is connected, and the first cooler 1 selects shell and tube cooler, and the first cooler 1 is connected with steam-water separator 2 by pipeline, vapour
2 gas outlet of separator connects second pipe 20, and second pipe 20 is connected with two the first branch pipes 21 respectively, and two first
Pipe 21 is connected with the air inlet of the first recycling drier 3 and the second recycling drier 4 respectively, on two the first branch pipes 21 respectively
The second branch pipe 22 is connected, the second branch pipe 22 is connected with third pipeline 23, the first recycling drier 3 and the second recycling drier
4 outlet side is separately connected third branch pipe 31, and third branch pipe 31 is connected with the 4th pipeline 30, the 4th pipeline 30 be equipped with
Its reflux line 32 being connected to, the other end of reflux line 32 connect two the 4th branch pipes 33, two the 4th branch pipes 33 respectively with
Two third branch pipes 31 are connected, and the 4th pipeline 30 is connected with 5 air inlet of the first nitrogen gas tank, are also connected with two on the 4th pipeline 30
A 5th branch pipe 40, the 5th branch pipe 40 are located at the two sides of 30 junction of third branch pipe 31 and the 4th pipeline, and the first nitrogen gas tank 5 goes out
Port is connected with the 5th pipeline 50, and the outside of first pipe 10 is also cased with cooling water pipe 6.
Specifically, the bottom of the first cooler 1 and steam-water separator 2 is respectively connected with electronic drainage device A, the first recycling drying
The bottom end of device 3 and the second recycling drier 4 is respectively connected with shredded meat ball valve B, is equipped with the first pneumatic operated valve on two the first branch pipes 21
C is equipped with the second pneumatic operated valve D on two the second branch pipes 22, is equipped with third pneumatic operated valve E on two third branch pipes 31, and two
The 4th pneumatic operated valve F and first pressure gauge G is equipped on four branch pipes 33, reflux direction in edge is successively arranged first section on reflux line 32
Only valve H, second pressure Table I and first flowmeter J, the 5th branch pipe 40 are equipped with the second shut-off valve K, successively set on the 4th pipeline 30
There are third shut-off valve L, third pressure gauge M and second flowmeter N, the top of the first nitrogen gas tank 5 is equipped with safety valve O, the first nitrogen
The bottom end of tank 5 is equipped with blowdown valve P.
Working method of the present invention：As shown in Fig. 2, swing adsorption nitrogen producing apparatus 100 mainly includes the first adsorption tower 200, the
Two adsorption tower 300 these equipment, compressed air c obtain the nitrogen of 99% or more purity by swing adsorption nitrogen producing apparatus 100, into
Enter in the second nitrogen gas tank 400, the nitrogen of the second nitrogen gas tank 400 is purified using nitrogen purifier 1000, nitrogen purification
Device 1000 mainly includes premixing tank 2000, oxygen-eliminating device 3000, the second cooler 4000, the purifying drying of cooling driers 5000, first
Device 6000 and the second purifying drier 7000, obtaining purity by the nitrogen of the progress of nitrogen purifier 1000 after purification is
99.999%~99.9999% high pure nitrogen d and regeneration tail gas a, regeneration tail gas a are returned by nitrogen purification of the invention
It receives and pure nitrogen gas b can be obtained using system, pure nitrogen gas b meets the requirement of adsorption nitrogen making device blowback air, which is introduced
First nitrogen gas tank 5 buffering, and the first nitrogen gas tank 5 is exported and is docked with the blowback pipeline of swing adsorption nitrogen producing apparatus 100, in transformation
During adsorbing nitrogen processed, that is, the portion gas can be used to carry out blowback to the oxygen parsed in nitrogen-making device.
The specific workflow of nitrogen purification recycling of the invention：In conventional swing adsorption nitrogen producing apparatus 100 and plus hydrogen
On 1000 Process ba- sis of deoxygenation nitrogen purifier, drier 7000 is purified in the first purifying drier 6000 and second first
Regeneration tail gas a, which is sent in the first pipe 10 of the first cooler 1, adds one-step cooling jacket pipe 6, and the cooling water in casing can be right
The regeneration tail gas a generated during adsorbent reactivation in drier is precooled, i.e., again to the high temperature generated in regenerative process
Raw tail gas a is tentatively cooled down, and regeneration tail gas a is introduced into the first cooler 1, first is cold after tentatively taking temperature by pipeline
But device 1 selects shell and tube cooler, and gas walks shell side, and cooling water walks tube side, by the most gaseous state water cooling in regeneration tail gas a
Coagulate for liquid, and by electronic drainage device A by liquid water timing discharge system, after the first cooler 1, regeneration tail gas a into
Enter steam-water separator 2, the water in tail gas is further separated with gas in steam-water separator 2, the liquid water separated
It is gathered in 2 bottom of steam-water separator, equally by electronic drainage device A by the water timing discharge system in container, by tail gas
Tentatively cooled down, condense water removal, steam-water separation, most of water in regeneration tail gas a has removed, and further introduces a gas into
Depth water removal in first recycling drier 3 and the second recycling drier 4, device use similar first purifying drier 6000 and the
The Double-Tower Structure of two purifying driers 7000, tower are provided with adsorbent of molecular sieve, a tower in absorption use process, another
Tower is in reproduction operation state, and two towers are used alternatingly, and guarantees have stablizing for dry gas to export always, handles by tail gas clean-up
After the water removal of device depth, dry gas enters the first nitrogen gas tank 5 and buffers for use.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features.It is all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. nitrogen purification tail gas recycling system, which is characterized in that including the first cooler, steam-water separator, the first recycling
Drier, the second recycling drier and the first nitrogen gas tank, the first pipe of regeneration tail gas air inlet are connected with first cooler,
First cooler is connected with the steam-water separator by pipeline, and the steam-water separator gas outlet connects second pipe,
The second pipe is connected with two the first branch pipes respectively, and two first branch pipes recycle drier with described first respectively
It is connected with the air inlet of the second recycling drier, is separately connected the second branch pipe on two first branch pipes, described the
Two branch pipes are connected with the third pipeline, the outlet side point of the first recycling drier and the second recycling drier
Not Lian Jie third branch pipe, the third branch pipe is connected with the 4th pipeline, and the 4th pipeline is equipped with returning of communicating therewith
Flow tube road, the other end of the reflux line connect two the 4th branch pipes, two the 4th branch pipes respectively with two described the
Three branch pipes are connected, and the 4th pipeline is connected with the first nitrogen gas tank air inlet, are also connected with two on the 4th pipeline
A 5th branch pipe, the 5th branch pipe are located at the two sides of the third branch pipe and the 4th pipeline junction, first nitrogen
The gas outlet of gas tank is connected with the 5th pipeline.
2. nitrogen purification tail gas recycling system according to claim 1, which is characterized in that outside the first pipe
Portion is also cased with cooling water pipe.
3. nitrogen purification tail gas recycling system according to claim 1, which is characterized in that first cooler and
The bottom of the steam-water separator is respectively connected with electronic drainage device, the first recycling drier and the second recycling drier
Bottom end be respectively connected with shredded meat ball valve, the first pneumatic operated valve is equipped on two first branch pipes, on two second branch pipes
It is equipped with the second pneumatic operated valve, third pneumatic operated valve is equipped on two third branch pipes, is equipped on two the 4th branch pipes
4th pneumatic operated valve and first pressure gauge, the reflux line along reflux direction be successively arranged the first shut-off valve, second pressure gauge and
First flowmeter, the 5th branch pipe are equipped with the second shut-off valve, are successively arranged third shut-off valve, third on the 4th pipeline
Pressure gauge and second flowmeter.
4. nitrogen purification tail gas recycling system according to claim 1, which is characterized in that first nitrogen gas tank
Top is equipped with safety valve, and the bottom end of first nitrogen gas tank is equipped with blowdown valve.
5. nitrogen purification tail gas recycling system according to claim 1, which is characterized in that the first cooler choosing
Use shell and tube cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810961652.XA CN108862213A (en) | 2018-08-22 | 2018-08-22 | Nitrogen purification tail gas recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810961652.XA CN108862213A (en) | 2018-08-22 | 2018-08-22 | Nitrogen purification tail gas recycling system |
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| Publication Number | Publication Date |
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| CN108862213A true CN108862213A (en) | 2018-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810961652.XA Pending CN108862213A (en) | 2018-08-22 | 2018-08-22 | Nitrogen purification tail gas recycling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937583A (en) * | 2019-12-16 | 2020-03-31 | 杭州盛博净化设备有限公司 | Nitrogen making machine |
| CN111545018A (en) * | 2020-05-19 | 2020-08-18 | 武汉定飞科技有限公司 | Device and method for recovering nitrogen tail gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700878A (en) * | 2009-09-09 | 2010-05-05 | 张文波 | Nitrogen purification method |
| CN201776068U (en) * | 2010-08-23 | 2011-03-30 | 杭州普菲科空分设备有限公司 | Isopiestic pressure purification drying system with no regeneration gas loss |
| CN104163404A (en) * | 2014-06-09 | 2014-11-26 | 宝钢股份黄石涂镀板有限公司 | Recycling method and device for regenerated waste nitrogen in nitrogen purification process |
| CN209113483U (en) * | 2018-08-22 | 2019-07-16 | 苏州市创优净化科技有限公司 | Nitrogen purification tail gas recycling system |
-
2018
- 2018-08-22 CN CN201810961652.XA patent/CN108862213A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700878A (en) * | 2009-09-09 | 2010-05-05 | 张文波 | Nitrogen purification method |
| CN201776068U (en) * | 2010-08-23 | 2011-03-30 | 杭州普菲科空分设备有限公司 | Isopiestic pressure purification drying system with no regeneration gas loss |
| CN104163404A (en) * | 2014-06-09 | 2014-11-26 | 宝钢股份黄石涂镀板有限公司 | Recycling method and device for regenerated waste nitrogen in nitrogen purification process |
| CN209113483U (en) * | 2018-08-22 | 2019-07-16 | 苏州市创优净化科技有限公司 | Nitrogen purification tail gas recycling system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937583A (en) * | 2019-12-16 | 2020-03-31 | 杭州盛博净化设备有限公司 | Nitrogen making machine |
| CN110937583B (en) * | 2019-12-16 | 2021-05-18 | 杭州盛博净化设备有限公司 | Nitrogen making machine |
| CN111545018A (en) * | 2020-05-19 | 2020-08-18 | 武汉定飞科技有限公司 | Device and method for recovering nitrogen tail gas |
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