CN101745315A - Process and device for rectifying and separating stable isotope 13C at low temperature by adopting CO - Google Patents
Process and device for rectifying and separating stable isotope 13C at low temperature by adopting CO Download PDFInfo
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- CN101745315A CN101745315A CN200910197588A CN200910197588A CN101745315A CN 101745315 A CN101745315 A CN 101745315A CN 200910197588 A CN200910197588 A CN 200910197588A CN 200910197588 A CN200910197588 A CN 200910197588A CN 101745315 A CN101745315 A CN 101745315A
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Abstract
The invention relates to a process and a device for rectifying and separating stable isotope 13C at low temperature by adopting CO. The device adopts a cascaded tower consisting of a low-temperature rectifying tower, regular packing, a condenser, a reboiler, an isotope frequency scrambler and a liquid nitrogen circulating system; the device adopts an unpowered conveying horizontal cascade mode; and after rectified through the rectifying tower, part of high-purity CO is used as tower top spray liquor, and the other part of the high-purity CO enters the rectifying towers of the next stage and then is converted through the isotope frequency scrambler, so as to realize the isotope conversion of 13C16O and 12C18O. The invention provides a production method which has the advantages that the process is simple, the production cost is low, 99 percent of stable isotope 13C can be obtained at one step, the energy consumption is saved, the disadvantage of suspend production of a device caused by equipment failure can also be avoided, the adopted horizontal cascade and the selected ripple regular packing reduce the engineering roadblock caused by a conventional technology which blindly seeks height, and overcome the default of rank poison of a traditional chemical method and the disadvantages of low reaction rate and low production capacity.
Description
Technical field
The present invention relates to a kind of separating stable isotope
13The technology of C and device especially relate to and adopt CO cryogenic rectification separating stable isotope
13The technology of C and device.
Background technology
In the prior art, existing technology and the device that adopts CO cryogenic rectification separating stable isotope 13C.
Nineteen forty-seven U.S. Eastman Kodak company adopts extremely strong HCN/NaCN chemical exchange method (Clyde A.Hutchison, David W.Stewart, Harold C.Urey, the concentration of of toxicity
13C, Journal of chemical physics, Vol.8,1940,532-537), carry out half suitability for industrialized production 65%
13C, the back is ordered to close.
At the sixties in 20th century, U.S. CH
4Thermal diffusion method is produced
13C (W.M.Rutherford, J.M.Keller, Preparation of highly enriched carbon-13 by thermal diffusion of methane, the journal ofchemical physics, Vol.44, No.2,1966,723); Little because of this method production capacity, expend a large amount of electric energy, the back is replaced by the CO cryogenic rectification method.
U.S. Los Alamos laboratory (B.B.Mclnteer, isotope separation by distillation:designof a carbon-13 plant, separation science and technology, vol.15, No.3,1980,491-508) set up one in 1978 and produced 8kg/a 99% per year
13The factory of C (designed capacity is 20kg/a), i.e. Cola-Colita device.King-tower is formed by two sections, and the multiple-tube column that the first order is 5cm, long 100m by 6 tower diameters is formed side by side, and the second level is that long 100m, tower diameter are the tower formation of 5cm; Dress random packing in the tower, two stage vertical also meets length overall 200m.This method adopts vertical cascade, and liquid nitrogen once utilizes, expends a large amount of energy, the production cost height,
13C product abundance can only reach 81.9%.The product of king-tower in the tungsten pipe, under 1200 ℃ through isotope reforming unit pyroreaction:
Enter after the conversion in the secondary tower of another long 55m and further be concentrated into 99%
13C.Cola-Colita rectifier unit vertical hanging is in the dark hole in the ground of 200m, and difficulty of construction is very big.
U.S. Pat 4029559, US4941956, US5827405 have reported with laser method and have separated
13The C isotope, but do not see commercial Application.Though laser method is good by a lot of experts, its energy consumption is high, technology prematurity still.
U.S. Pat 6202440 has been introduced with the CO cryogenic rectification and has been produced stable isotope
13C.This patent adopts a kind of structured packing that fluid distributes that improves, and utilizes computer Simulation calculation.At pressure is that 0.8-3.0bar, packing specific area are 500-1000m
2/ m
3, column internal diameter 0.25-0.5m, splitter are divided into three sections of A, B, C.Different condition in the post length overall is 450m～150m is carried out analog computation, draws optimal conditions and be that three sections high of A, B, C are respectively 44,46,60m, and the tower internal diameter is 0.305m, and reboiler power 38.8KW, liquid holdup are 5%,
13C product abundance only is 10%.This patent of invention is not mentioned the high abundance technology, cold energy use is not introduced yet.So do not see actual commercial Application report as yet.The energy consumption of this method will be very huge, because of not solving the main difficult problem of cryogenic rectification, the height that promptly how to cut down the consumption of energy, the problem that cost is high; If obtain 99%
13C, total height will reach km, and so the equipment of overlength processing installation, rectifying operating mode tissue and heat are kept many advanced industrial technologies field that relates to.Though can realize in theory, obviously also infeasible on engineering.
Japan Tokyo Gas Co. has set up the cryogenic rectification pilot-plant that methane is medium in 1988-1999, and (her rattan one man is about with the exploitation of the low-temperature precise way of distillation to the Methane Carbon Isotope isolation technics, Petrotech, Vol.16, No.8,1993, P727-729).This device by raw material pre-treatment section,
13CH
4Enriching section reaches
12CH
4Enriching section three parts are formed.
13CH
4Enriching section is made up of 30 meters high three cascades, and wherein the first order is formed side by side by 7 towers, adopts the filler of oneself exploitation, and the design theory plate number of first tower is that 1000, second tower are that 1200, the 3rd tower are 1000.
12CH
4The concentration tower number of theoretical plate is 1300.Product is 99%
13CH
4And 99.9%
12CH
4Product.This pilot-plant consumes 150 kilograms/hour of liquid nitrogen, 520 liters/hour of raw material treating capacities, obtains high-purity CH of 99.9999%
4494.6 rise/hour, 95%
13CH
40.4 rise/hour, 99.9%
12 CH
45 liters/hour.Rectification temperature-172～-164 ℃, pressure 0.4～0.8atm.This device liquid nitrogen once utilizes, and is cascaded as the multiple-tube column structure.
This shows, existing
13C cryogenic rectification production technology possesses the shortcoming that device is too high, cold energy consumption big, isotope product reaches 99% difficulty, has caused the high present situation of production cost.
Summary of the invention
Purpose of the present invention is exactly to provide simple, the lower-cost employing of a kind of technology CO cryogenic rectification separating stable isotope for the defective that overcomes above-mentioned prior art existence
13The technology of C and device.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of employing CO cryogenic rectification separating stable isotope
13The technology of C is characterized in that, this technology may further comprise the steps: high-purity CO is after rectifying column rectifying, and a part is as the cat head spray liquid, and another part enters the next stage rectifying column, and the CO after the rectifying transforms through the isotope scrambler, realizes
13C
16O and
12C
18The O isotope transforms, and obtains
13The C product.
A kind of employing CO cryogenic rectification separating stable isotope
13The device of C, it is characterized in that, this device is low-temperature fractionating tower, structured packing, condenser, reboiler, the isotope scrambler, the cascade tower that the liquid nitrogen circulatory system is formed, cascade system adopts the horizontal multitower cascade of unpowered conveying, 1 isotope scrambler is installed between the described cascade tower at least, described structured packing is located in the low-temperature fractionating tower, described condenser is located at the cat head of low-temperature fractionating tower, described reboiler is located at the cryogenic rectification tower bottom, the described liquid nitrogen circulatory system adopts liquid nitrogen as condensing agent, condensation CO gas institute chilling requirement is provided, and liquefaction again realizes recycling behind the liquid nitrogen gasification.
Described cascade comprises the horizontal cascade that at least two towers are formed.
There is not the power conveying equipment between the described cascade tower, gas phase at the bottom of the prime tower flows to back level cat head under the promotion of pressure reduction, as the spray liquid of back level tower, the CO steam of back level cat head flows to prime tower still through after the condensation under the effect of gravity after condensation, realizes that vapour-liquid refluxes.
Described cascade tower quantity is the 2-20 root.
The tower diameter of described low-temperature fractionating tower is 0.02-5m, absolute operating pressure 0.15-5kg/cm
2
Described structured packing corrugated regular filler has the gas-liquid water conservancy diversion and distributes, and comprises Lamb wave line and screen waviness packings.
The specific area of described corrugated regular filler is 250-2000m
2/ m
3, material comprises stainless steel, the blue or green steel of phosphorus and oxide or alloy.
Fill the metal simple-substance that material is Ni, Co, Cu, Zn, Cr, Al, Mg, Fe, Ti, Zr, Mn, Mo, Ca, B, Ba, W, Ru, Rh, Th, La, Ta, Pd, Ir, Pt, Au, Ag in the described isotope scrambler, or in its alloy, oxide one or more.
The operating temperature of described isotope scrambler is 20-600 ℃.
Compared with prior art, the invention provides that a kind of technology is simple, production cost is low, can a step obtain 99% stable isotope
13The production method of C and energy efficient, the shortcoming of having avoided equipment fault to cause device to stop production again, the horizontal cascade of employing has reduced conventional art and pursued the through engineering approaches difficult problem that height is brought simply, and is bigger than thermal diffusion method production capacity, cost is low; Overcome the defective of traditional chemical method severe toxicity and the shortcoming that reaction speed is slow, production capacity is low, easier than laser method industrialization, energy consumption is low, the corrugated regular filler of selecting for use, production capacity improves greatly than tradition, and has reduced cost, and concrete advantage is as follows:
(1) the present invention adopts the horizontal cascade of CO cryogenic rectification multitower, and unpowered conveying realizes natural back flow between tower and the tower, has solved traditional C O cryogenic rectification and has produced
13The device of C adopts vertical cascade and causes rectifying column too high, and the shortcoming of maintenance difficulty is installed; Also avoided the horizontal cascade of traditional multitower to realize conveying and to occur equipment fault, Hao Neng shortcoming simultaneously easily by liquid pump or gas blower;
(2) the present invention installs the isotope scrambler in cascade, realizes
13C
16O and
12C
18The isotope of O transforms, and can directly obtain 99% like this
13C
16O has avoided traditional handicraft can only obtain 93%
13C, the shortcoming of secondary separation after the necessary pyroreaction.Fill material in the scrambler and be in base metal simple substance such as Ni, Al, Fe, Mn or its alloy, the oxide one or more, and noble metals such as micro-Ru, Pd, Pt.The operating temperature of scrambler is between 20-600 ℃ middle warm area;
(3) the present invention adopts the recycle utilization that low temperature nitrogen liquefies again, has remedied traditional handicraft and has once utilized liquid nitrogen, the high energy consumption shortcoming that the direct emptying in vaporization back is brought;
(4) the efficient corrugated regular filler of filling in the low-temperature fractionating tower of the present invention, efficient is higher than the technology that tradition adopts random packing, and each level of the present invention is formed by a tower, and the tower diameter maximum can reach 5 meters, has overcome tradition
13The C separator adopts the shortcoming of multiple-tube column structure.
Description of drawings
The levels joined process flow figure that Fig. 1 forms for the Building N low-temperature fractionating tower;
Fig. 2 is the process chart of embodiment 1;
Fig. 3 is the isotopes concentration distribution curve of each tower among the embodiment 1;
The levels joined process flow figure that Fig. 4 forms for the Building N low-temperature fractionating tower;
Fig. 5 is the process chart of embodiment 2.
1 is low-temperature fractionating tower among the figure, 2 is low-temperature fractionating tower, 3 is low-temperature fractionating tower, 4 is low-temperature fractionating tower, N is a low-temperature fractionating tower, 11 is control valve, 15 is control valve, 24 is control valve, 25 is control valve, 34 is control valve, 35 is control valve, 44 is control valve, 45 is control valve, N4 is a control valve, (N-1) 5 is control valve, 12 is reboiler, 22 is reboiler, 32 is reboiler, 42 is reboiler, N2 is a reboiler, 13 is condensate liquid, 14 is overhead gas, 16 is overhead condenser, 26 is overhead condenser, 36 is overhead condenser, 46 is overhead condenser, N6 is an overhead condenser, 17 is the tower still, 27 is the tower still, 37 is the tower still, 47 is the tower still, N7 is the tower still, 18 are structured packing, 50 is heat exchanger, IS is the isotope scrambler, LN is a liquid nitrogen storage, CP is a compressor, V1 is a choke valve.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Forming horizontal level Four connection by four low-temperature fractionating towers as first order rectifying column 1, second level rectifying column 2, third level rectifying column 3, fourth stage rectifying column 4 produces
13C, as shown in Figure 2,30 meters of rectifying tower heights, tower diameter are respectively 390,200,90,45mm, filling stainless steel cloth corrugated regular filler 18 in the tower, production capacity is for producing 100 kilogram 99% per year
13C, concrete parameter sees Table 1.From throat-fed, flow is 6366 moles/day to high pure raw material CO by control valve 11, and gas phase flow to overhead condenser 16 in the tower, and condensate liquid 13 flows back in the first order rectifying column 1, as spray liquid; Another part overhead gas 14 is discharged the back and is sold as industrial chemicals, liquid CO is heated vaporization in the first order rectifying column 1 after the surface of structured packing 18 flows to tower still 17, part filling space in first order rectifying column 1 upwards flows, and exchanges with the liquid that descends; Another part tower still boil-off enters second level cat head by control valve 15 under the promotion of pressure reduction, after condensation as the spray liquid of second level rectifying column 2; And under the effect of gravity, flow to prime tower still 17 after 26 condensations of the CO steam of second level rectifying column 2 cats head process condenser by control valve 24, realize the backflow of vapour-liquid between cascade.In like manner, second and third level, the 3rd level Four tower are realized refluxing.Third level tower bottom enters isotope scrambler IS after dividing steam to regulate by control valve 35, the scramble material is the oxide surface that Ru-Pt-Pd loads on Al, Fe, Mo, Ti, operating temperature is 400 ℃, isotopic molecule is finished catalytic reaction at the scramble material surface, enter the 4th grade of cat head afterwards, the condensate liquid of the 4th tower 4 is provided after the condensation.99%
13The C product at the bottom of the fourth stage tower with every day 25.76 moles flow take out by control valve 45 metering backs, the isotopes concentration distribution curve of each tower is as shown in Figure 3.
Refrigeration system adopts low temperature nitrogen circulation liquefaction technology.Liquid nitrogen flows out from cryogenic tank LN, enter each overhead condenser 16,26,36,46, with the CO steam heat-exchanging, the nitrogen of vaporization enters each tower still and liquid CO heat exchange after being pressurized to 3MPa through compressor CP, be decompressed to 0.4MPa through choke valve V1 at last, the nitrogen of liquefaction returns liquid nitrogen storage LN.
Table 1
Forming horizontal level Four connection by four low-temperature fractionating towers as first order rectifying column 1, second level rectifying column 2, third level rectifying column 3, fourth stage rectifying column 4 produces
13C, as shown in Figure 5,30 meters of rectifying tower heights, tower diameter are followed successively by 390,200,90,45mm.Production capacity is for producing 100 kilogram 99% per year
13C.From throat-fed, flow is 6366 moles/day to high pure raw material CO by control valve 11.Gas phase flow to overhead condenser 16 in the tower, and condensate liquid 13 flows back in the tower, as spray liquid; Another part overhead gas 14 is discharged the back and is sold as industrial chemicals.Liquid CO is heated vaporization in the tower after filling surface flows to tower still 17, and a part upwards flows in the inner-tower filling material space, exchanges with the liquid that descends; Another part tower still boil-off enters the condenser of second level cat head by control valve 15 under the promotion of pressure reduction, after condensation as the spray liquid of second level tower; And the CO steam of the 2nd grade of cat head flows to prime tower still by control valve 24 through after the condensation under the effect of gravity, realizes the backflow of vapour-liquid between cascade.In like manner, the second level, the third level, fourth stage tower are realized refluxing.First, second and third grade tower bottom divides steam to enter isotope scrambler IS, and isotopic molecule is finished catalytic reaction in scrambler, enter the condenser of next stage cat head afterwards, flows back to subordinate's tower after the condensation.99%
13The C product at the bottom of the fourth stage tower with every day 25.76 moles flow take out by control valve 45 metering backs.
Refrigeration system of the present invention adopts low temperature nitrogen circulation liquefaction technology.Liquid nitrogen flows out from cryogenic tank LN, enter each overhead condenser N6,26,36,46, with the CO steam heat-exchanging, the nitrogen of vaporization is pressurized to 3MPa through compressor CP, enter heat exchanger 50 and the preceding nitrogen heat exchange of compression, enter each tower still and liquid CO heat exchange afterwards, be decompressed to 0.4MPa through choke valve V1 at last, the nitrogen of liquefaction returns liquid nitrogen storage LN.
A kind of technology and device that adopts CO cryogenic rectification separating stable isotope 13C, its structure as shown in Figure 1, piece-rate system is low-temperature fractionating tower 1, low-temperature fractionating tower N, structured packing 18, condenser 16, condenser N6, reboiler 12, reboiler N2, the cascade tower that isotope scrambler IS, the liquid nitrogen circulatory system are formed, cascade system adopts the horizontal multitower cascade of unpowered conveying, realizes in the isotope scrambler
13C
16O and
12C
18The O isotope transforms, and rectifying obtains 99%
13The C product.
There is not the power conveying equipment between the cascade tower, gas phase at the bottom of the prime tower flows to back level cat head under the promotion of pressure reduction, as the spray liquid of back level tower, the CO steam of back level cat head flows to prime tower still through after the condensation under the effect of gravity after condensation, realizes that vapour-liquid refluxes.N installs 1 isotope scrambler IS in this system between 2, the two cascade towers, realizes
13C
16O and
12C
18The isotope of O transforms, and first order tower diameter is that 0.1m, second level tower diameter are 0.02m, absolute operating pressure 0.15kg/cm
2, structured packing is a plate ripple arranged packing, specific area is 250m
2/ m
3, material is a stainless steel, and filling material in the isotope scrambler IS is Ni or Cu, and operating temperature is 20 ℃, and the liquid nitrogen circulatory system adopts liquid nitrogen as condensing agent, and condensation CO gas institute chilling requirement is provided, and liquefaction again realizes recycling behind the liquid nitrogen gasification.
From throat-fed, gas phase flow to overhead condenser 16 to high pure raw material CO in the tower by control valve 11, and condensate liquid 13 flows back in the tower, as spray liquid; Another part overhead gas 14 is discharged the back and is sold as industrial chemicals.Be heated vaporization after liquid CO flows to tower still 17, a part upwards flows in the inner-tower filling material space, exchanges with the liquid that descends; Another part tower still boil-off enters isotope scrambler IS by control valve (N-1) 5 under the promotion of pressure reduction, enter N level cat head after the catalytic reaction, the spray liquid of conduct back level tower after condensation; And the CO steam of N level cat head flows to prime tower still by control valve N4 through after the condensation under the effect of gravity, realizes the backflow of vapour-liquid between cascade.99%
13The C product takes out by control valve N5 metering back.
Refrigeration system adopts low temperature nitrogen circulation liquefaction technology, liquid nitrogen flows out from cryogenic tank LN, enter each overhead condenser N6, with the CO steam heat-exchanging, the nitrogen of vaporization enters each tower still and liquid CO heat exchange after being pressurized to 3MPa through compressor CP, be decompressed to 0.4MPa through choke valve V1 at last, the nitrogen of liquefaction returns liquid nitrogen storage LN.
A kind of technology and device that adopts CO cryogenic rectification separating stable isotope 13C, its structure as shown in Figure 4, piece-rate system is low-temperature fractionating tower 1, low-temperature fractionating tower N, structured packing 18, condenser 16, condenser N6, reboiler 12, reboiler N2, the cascade tower that isotope scrambler IS, liquid nitrogen circulatory system LN form, cascade system adopts the horizontal multitower cascade of unpowered conveying, realizes in the isotope scrambler
13C
16O and
12C
18The O isotope transforms, and rectifying obtains 99%
13The C product.
There is not the power conveying equipment between the cascade tower, gas phase at the bottom of the prime tower flows to back level cat head under the promotion of pressure reduction, as the spray liquid of back level tower, the CO steam of back level cat head flows to prime tower still through after the condensation under the effect of gravity after condensation, realizes that vapour-liquid refluxes.N is 20 in this system, and 1 isotope scrambler IS is installed between each cascade tower at least, realizes
13C
16O and
12C
18The isotope of O transforms, and first order tower diameter is 5m, absolute operating pressure 5kg/cm
2, follow-up rectifying Tata directly is 3m, and structured packing is the screen waviness structured packing, has the gas-liquid water conservancy diversion and distributes, and specific area is 2000m
2/ m
3, material is the blue or green steel oxidation thing of phosphorus, fills the oxide that material is Al, Ni or Co in the isotope scrambler IS, operating temperature is 600 ℃, and the liquid nitrogen circulatory system adopts liquid nitrogen as condensing agent, and condensation CO gas institute chilling requirement is provided, liquefaction again realizes recycling behind the liquid nitrogen gasification.
From throat-fed, gas phase flow to overhead condenser 16 to high pure raw material CO in the tower by control valve 11, and condensate liquid 13 flows back in the tower, as spray liquid; Another part overhead gas 14 is discharged the back and is sold as industrial chemicals.Be heated vaporization after liquid CO flows to tower still 17, a part upwards flows in the inner-tower filling material space, exchanges with the liquid that descends; Another part tower still boil-off enters isotope scrambler IS by control valve (N-1) 5 under the promotion of pressure reduction, enter condenser after the catalytic reaction, after condensation as the spray liquid of N level tower; And the CO steam of N level cat head flows to prime tower still by control valve N4 through after the condensation under the effect of gravity, realizes the backflow of vapour-liquid between cascade.99%
13The C product takes out by control valve N5 metering back.
Refrigeration system adopts low temperature nitrogen circulation liquefaction technology.Liquid nitrogen flows out from cryogenic tank LN, enter each overhead condenser N6, with the CO steam heat-exchanging, the nitrogen of vaporization enters each tower still and liquid CO heat exchange after being pressurized to 3MPa through compressor CP, be decompressed to 0.4MPa through choke valve V1 at last, the nitrogen of liquefaction returns liquid nitrogen storage LN.
Claims (10)
1. one kind is adopted CO cryogenic rectification separating stable isotope
13The technology of C is characterized in that, this technology may further comprise the steps: high-purity CO is after rectifying column rectifying, and a part is as the cat head spray liquid, and another part enters the next stage rectifying column, and the CO after the rectifying transforms through the isotope scrambler, realizes
13C
16O and
12C
18The O isotope transforms, and obtains
13The C product.
2. one kind is adopted CO cryogenic rectification separating stable isotope
13The device of C, it is characterized in that, this device is low-temperature fractionating tower, structured packing, condenser, reboiler, the isotope scrambler, the cascade tower that the liquid nitrogen circulatory system is formed, cascade system adopts the horizontal multitower cascade of unpowered conveying, 1 isotope scrambler is installed between the described cascade tower at least, described structured packing is located in the low-temperature fractionating tower, described condenser is located at the cat head of low-temperature fractionating tower, described reboiler is located at the cryogenic rectification tower bottom, the described liquid nitrogen circulatory system adopts liquid nitrogen as condensing agent, condensation CO gas institute chilling requirement is provided, and liquefaction again realizes recycling behind the liquid nitrogen gasification.
3. a kind of employing CO cryogenic rectification separating stable isotope according to claim 2
13The device of C is characterized in that, described cascade comprises the horizontal cascade that at least two towers are formed.
4. a kind of employing CO cryogenic rectification separating stable isotope according to claim 2
13The device of C, it is characterized in that, there is not the power conveying equipment between the described cascade tower, gas phase at the bottom of the prime tower flows to back level cat head under the promotion of pressure reduction, the spray liquid of conduct back level tower after condensation, the CO steam of back level cat head flows to prime tower still through after the condensation under the effect of gravity, realize that vapour-liquid refluxes.
5. a kind of employing CO cryogenic rectification separating stable isotope according to claim 2
13The device of C is characterized in that, described cascade tower quantity is the 2-20 root.
6. a kind of employing CO cryogenic rectification separating stable isotope according to claim 2
13The device of C is characterized in that, the tower diameter of described low-temperature fractionating tower is 0.02-5m, absolute operating pressure 0.15-5kg/cm
2
7. a kind of employing CO cryogenic rectification separating stable isotope according to claim 2
13The device of C is characterized in that, described structured packing corrugated regular filler has the gas-liquid water conservancy diversion and distributes, and comprises Lamb wave line and screen waviness packings.
8. a kind of employing CO cryogenic rectification separating stable isotope according to claim 7
13The device of C is characterized in that, the specific area of described corrugated regular filler is 250-2000m
2/ m
3, material comprises stainless steel, the blue or green steel of phosphorus and oxide or alloy.
9. a kind of employing CO cryogenic rectification separating stable isotope according to claim 2
13The device of C, it is characterized in that, fill the metal simple-substance that material is Ni, Co, Cu, Zn, Cr, Al, Mg, Fe, Ti, Zr, Mn, Mo, Ca, B, Ba, W, Ru, Rh, Th, La, Ta, Pd, Ir, Pt, Au, Ag in the described isotope scrambler, or in its alloy, oxide one or more.
10. a kind of employing CO cryogenic rectification separating stable isotope according to claim 2
13The device of C is characterized in that, the operating temperature of described isotope scrambler is 20-600 ℃.
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| CN102380315A (en) * | 2011-11-10 | 2012-03-21 | 上海化工研究院 | Low temperature rectification cascade system for rectifying CO to produce stable isotope 13C |
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| CN104474898B (en) * | 2014-11-24 | 2017-09-29 | 上海化工研究院有限公司 | Produce high abundance13C cryogenic rectification multitower cascade energy saver |
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