CN208653062U - A kind of space division system extracting poor krypton xenon product using liquefied air - Google Patents
A kind of space division system extracting poor krypton xenon product using liquefied air Download PDFInfo
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- CN208653062U CN208653062U CN201820437590.8U CN201820437590U CN208653062U CN 208653062 U CN208653062 U CN 208653062U CN 201820437590 U CN201820437590 U CN 201820437590U CN 208653062 U CN208653062 U CN 208653062U
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Abstract
A kind of space division system extracting poor krypton xenon product using liquefied air, it includes a space division rectifying column being mainly made up of Shang Ta and lower tower intermediate main condenser evaporator, lower tower draws the crude argon condenser that liquefied air is respectively connected to upper tower with pipeline and crude argon column top connects, liquefied air is drawn in crude argon condenser accesses poor krypton xenon tower, after the cooling for being fixed on the poor krypton xenon tower evaporator that poor krypton xenon tower bottom connects, the poor krypton-xenon liquid extracted is drawn from bottom, the saturated mode air piping connection of the Base top contact krypton xenon ingredient of poor krypton xenon tower is simultaneously sent into upper tower.
Description
Technical field
The present invention relates to a kind of space division systems that poor krypton xenon product is extracted using liquefied air, belong to the energy, chemical industry
The Cryogenic air separation technology in field.
Background technique
Rare gas generally refers to five kinds of argon, neon, helium, krypton, xenon gases.Other than helium is mainly extracted by natural gas, air
It is the main source of these rare gas.With the development of national economy, should having for rare gas is more and more extensive, and demand is also got over
Come it is bigger, from air recycle rare gas manifest high economic value.
The extraction of poor krypton-xenon liquid at present is mainly realized by the crude device of krypton xenon of institute's band in Large Air Separation Devices.This side of producing
Method must install one section of rectifiying plate at the top of tower lower curtate or crude argon condenser in space division, if first stage of construction does not install this section
Column plate can not then produce poor krypton-xenon liquid by this method, as shown in Figure 1；And the gas-liquid on this section of column plate that upper tower installs additional
Than having compared very big difference with upper tower other parts, slightly design deviation and operation deviation be easy to cause entire space division operating condition not
Stablize.Therefore, design operation difficulty is high, and investment is big, and yield is limited by space division scale, and hardly possible adapts to modern enterprise and gets over to krypton xenon
Carry out bigger demand.
Summary of the invention
It is an object of the invention to overcome the shortcomings of the prior art, and space division column plate can not increased by providing one kind
Under the premise of extract poor krypton-xenon liquid, be not only suitable for newly going up air separation unit construction, be also applied for original not band crude device space division of krypton xenon
Transformation, has that investment and occupied space be all smaller and the space division system that poor krypton xenon product is extracted using liquefied air of strong applicability
System and method.
The object of the present invention is achieved by the following technical solutions, a kind of to extract poor krypton xenon product using liquefied air
Space division system, it includes a space division rectifying column being mainly made up of Shang Ta and lower tower intermediate main condenser evaporator, described
Tower draws the crude argon condenser that liquefied air is respectively connected to upper tower with pipeline and crude argon column top connects under space division rectifying column, described
Crude argon condenser in draw liquefied air and access poor krypton xenon tower, by the poor krypton xenon for being fixed on poor krypton xenon tower bottom and connecting
After the cooling of tower evaporator, the poor krypton-xenon liquid extracted, the saturation of the Base top contact krypton xenon ingredient of poor krypton xenon tower are drawn from bottom
State air piping connection is simultaneously sent into upper tower.
As preferred: the absorbing cavity input interface of the poor krypton xenon tower evaporator connects liquid of calming the anger from space division input
The air of critical point or the medium pressure nitrogen gas inputted from the external world, the absorbing cavity output interface of the poor krypton xenon tower evaporator pick out liquid
Change air and inputs upper tower or connection liquid nitrogen pipeline.
The beneficial effects of the present invention are:
Firstly, this method can extract poor krypton-xenon liquid from the liquefied air that space division crude argon condenser generates, without to space division
Primary flow path is modified, and can be used for creating space division project can also be applied to the transformation of original space division, have a wide range of application and also invest it is small,
Flow path efficiency is high, greatly reduces the production threshold of poor krypton xenon；
Secondly, poor krypton xenon yield is high, the recovery rate of xenon is up to 70% or so in a whole set of space division, xenon recovery rate in poor krypton xenon tower
Up to 98% or so.
Third has the advantages that cryogenic rectification method all, and the limitation without original method described in technical background.
Detailed description of the invention
Fig. 1 is the space division flow diagram for not extracting poor krypton xenon of the prior art.
Wherein: C1 is lower tower, and C2 is upper tower, and C3 is crude argon column, and K1 is main condenser/evaporator, and K2 is crude argon condenser, E1
For subcooler.
Fig. 2 is the flow chart that poor krypton xenon is extracted in space division liquefied air of the present invention.
Wherein: C1 is lower tower, and C2 is upper tower, and C3 is crude argon column, and C4 is poor krypton xenon tower, and K1 is main condenser/evaporator, and K2 is
Crude argon condenser, K4 are poor krypton xenon tower evaporator, and G1 is main condenser/evaporator absorbing cavity, and G2 is the absorption of poor krypton xenon tower condenser
Chamber, G4 are poor krypton xenon tower evaporator absorbing cavity, and E1 is subcooler.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings: of the present invention a kind of to use liquefied air shown in Fig. 2
The space division system of poor krypton xenon product is extracted, it mainly passes through intermediate main condenser evaporator K1 structure by upper tower C2 and lower tower C1 including one
At space division rectifying column, tower C1 draws liquefied air and is respectively connected to upper tower C2 and crude argon column C3 with pipeline under the space division rectifying column
Liquefied air is drawn in the crude argon condenser K2, the crude argon condenser K2 that top connects and accesses poor krypton xenon tower C4, by institute
After the cooling for stating the poor krypton xenon tower evaporator K4 for being fixed on poor krypton xenon tower C4 bottom connection, the poor krypton xenon extracted is drawn from bottom
Liquid, the saturated mode air piping connection of the Base top contact krypton xenon ingredient of poor krypton xenon tower C4 are simultaneously sent into upper tower C2.
As shown in the figure, the absorbing cavity G2 input interface of the poor krypton xenon tower evaporator K4 connects the middle pressure inputted from space division
The absorbing cavity G2 output of the air of gas-liquid critical point or the medium pressure nitrogen gas inputted from the external world, the poor krypton xenon tower evaporator K4 connects
Mouth picks out liquefied air and inputs upper tower C2 or connection liquid nitrogen pipeline.
The invention has the characteristics that:
1, from isolating product poor krypton-xenon liquid in liquefied air: under space division in the separation of tower oxygen nitrogen, krypton xenon is that heavy constituent exists
In liquefied air, the liquefied air that the present invention uses crude argon condenser to generate is as raw material, by the krypton xenon and oxygen nitrogen group in raw material
It is separated.
2, with sufficient heat source: as previously mentioned, the flow path in former space division can be used in the heat source of poor krypton xenon tower, respectively
It is again introduced into former space division after being condensed and participates in rectifying, the amount of cold source is unfettered, can sufficiently meet the rectifying of poor krypton xenon tower
It needs, to improve the poor krypton xenon recovery rate of poor krypton xenon tower.
Claims (2)
1. a kind of space division system for extracting poor krypton xenon product using liquefied air, it includes one mainly by upper tower (C2) He Xiata
(C1) the space division rectifying column being made up of intermediate main condenser evaporator (K1), it is empty to draw liquefaction for tower (C1) under the space division rectifying column
The crude argon condenser (K2) that gas is respectively connected to upper tower (C2) with pipeline and the top crude argon column (C3) connects, it is characterised in that described
Liquefied air is drawn in crude argon condenser (K2) and accesses poor krypton xenon tower (C4), by being fixed on poor krypton xenon tower (C4) bottom connection
After the cooling of poor krypton xenon tower evaporator (K4), the poor krypton-xenon liquid extracted, the Base top contact of poor krypton xenon tower (C4) are drawn from bottom
The saturated mode air piping connection of krypton xenon ingredient is simultaneously sent into upper tower (C2).
2. the space division system according to claim 1 for extracting poor krypton xenon product using liquefied air, it is characterised in that described
Absorbing cavity (G4) the input interface connection of poor krypton xenon tower evaporator (K4) calm the anger from space division input the air of liquid critical point
Or the medium pressure nitrogen gas from external world's input, it is empty that absorbing cavity (G4) output interface of the poor krypton xenon tower evaporator (K4) picks out liquefaction
Gas inputs upper tower (C2) or connection liquid nitrogen pipeline.
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| CN201820437590.8U CN208653062U (en) | 2018-03-29 | 2018-03-29 | A kind of space division system extracting poor krypton xenon product using liquefied air |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302899A (en) * | 2018-03-29 | 2018-07-20 | 浙江新锐空分设备有限公司 | A kind of space division system and method extracting poor krypton xenon product using liquefied air |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302899A (en) * | 2018-03-29 | 2018-07-20 | 浙江新锐空分设备有限公司 | A kind of space division system and method extracting poor krypton xenon product using liquefied air |
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