CN106430194B - High-purity carbon dioxide equipment for purifying - Google Patents

High-purity carbon dioxide equipment for purifying Download PDF

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Publication number
CN106430194B
CN106430194B CN201610884061.8A CN201610884061A CN106430194B CN 106430194 B CN106430194 B CN 106430194B CN 201610884061 A CN201610884061 A CN 201610884061A CN 106430194 B CN106430194 B CN 106430194B
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carbon
channel
dioxide
carbon dioxide
purifying
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CN106430194A (en
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林定标
陈崇文
陈辉
王培正
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ZHEJIANG HAICHANG GAS Co.,Ltd.
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ZHEJIANG HAITIAN GAS CO Ltd
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Abstract

A kind of high-purity carbon dioxide equipment for purifying, carbon dioxide purification channel including connecting carbon dioxide storage tank, it is characterized by: liquefier, catalytic bed, adsorbent bed, forecooler are successively passed through in carbon dioxide purification channel, finally in the middle part of connection rectifying column, rectifier is equipped with the refrigerating channel that inside is connected with low temperature nitrogen, the output end of refrigerating channel passes through liquefier, and emptying channel is equipped at the top of rectifying column, and forecooler is passed through in emptying channel.The present invention provides a kind of high-purity carbon dioxide equipment for purifying, pass through high-purity carbon dioxide catalysis oxidation absorption distillation technology, industrial grade carbon-dioxide is passed through into catalytic adsorption, remove oxygen, nitrogen, hydrogen, carbon monoxide, hydrocarbons, rectification and purification is carried out after cryogenic freezing, obtains high purity liquid carbon dioxide.

Description

High-purity carbon dioxide equipment for purifying
Technical field
The invention belongs to gas purification technical fields, refer in particular to a kind of high-purity carbon dioxide equipment for purifying.
Background technique
Carbon dioxide is technical grade, edible grade carbon-dioxide currently on the market, and purity is up to 39, is unable to satisfy electricity Son, demand of the medical industry to high-purity carbon dioxide.
Summary of the invention
The object of the present invention is to provide a kind of high-purity carbon dioxide equipment for purifying, are inhaled by high-purity carbon dioxide catalysis oxidation Industrial grade carbon-dioxide is passed through catalytic adsorption, oxygen, nitrogen, hydrogen, carbon monoxide, hydrocarbons is removed, through low temperature by attached distillation technology Rectification and purification is carried out after freezing, obtains high purity liquid carbon dioxide.
The object of the present invention is achieved like this: a kind of high-purity carbon dioxide equipment for purifying, including connection carbon dioxide storage The carbon dioxide purification channel of tank, it is characterised in that: carbon dioxide purification channel successively pass through liquefier, catalytic bed, adsorbent bed, Forecooler finally connects in the middle part of rectifying column, and the bottom of rectifying column is provided with the discharge line of the carbon dioxide after purification, rectifying column Top is equipped with the refrigerating channel that inside is connected with low temperature nitrogen, and the output end of refrigerating channel passes through liquefier, is equipped at the top of rectifying column Channel is emptied, forecooler is passed through in emptying channel.
Preferably, the carbon dioxide purification channel again passes by liquefier after forecooler, finally connects rectifying column.
Preferably, the rectifier bottoms are equipped with reboiler, and discharge line is equipped with sampling valve.
Preferably, catalytic bed entrance is led in the carbon dioxide purification channel again after heat exchanger, electric heater;Dioxy Change after carbon purification channel exports out from catalytic bed and again pass by heat exchanger, then through subcooler, finally leads to adsorbent bed.
Preferably, accurate filter is equipped between the adsorbent bed and forecooler.
Preferably, there are four the adsorbent beds, four adsorbent beds connected by pipeline and valve be connected in series with each other or The multiple adsorbent bed group being connected in parallel with each other.
Preferably, the carbon dioxide purification channel is equipped with flowmeter.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that
1, carbon dioxide is purified by catalytic bed, adsorbent bed, rectifying column, produces 59 or more (i.e. 99.999%) High-purity carbon dioxide;
2, present low temperature nitrogen refrigerating channel is substituted for by original refrigerator at the top of rectifying column, low temperature nitrogen can be by liquid The top outlet of nitrogen storage tank obtains, and realizes that resource makes full use of, reduces energy consumption;
3, refrigerating channel passes through liquefier, and forecooler is passed through in emptying channel, and remaining cooling capacity is recycled.
Detailed description of the invention
Fig. 1 is structure principle chart of the invention.
Detailed description of the invention: 1, channel is purified;2, refrigerating channel;3, channel is emptied;4, liquefier;5, forecooler;6, electric heating Device;7, discharge line.
Specific embodiment
With specific embodiment, the invention will be further described with reference to the accompanying drawing, referring to Fig. 1:
A kind of high-purity carbon dioxide equipment for purifying, the carbon dioxide purification channel 1 including connecting carbon dioxide storage tank, dioxy Change carbon purification channel 1 successively by liquefier 4, catalytic bed, (four adsorbent beds are connected into four adsorbent beds by pipeline and valve The multiple adsorbent bed group for being connected in series with each other or being connected in parallel with each other), accurate filter, forecooler 5, finally connect rectifying column in Portion, rectifier are equipped with the refrigerating channel 2 that inside is connected with low temperature nitrogen, and the output end of refrigerating channel 2 passes through liquefier 4, essence It evaporates top of tower and is equipped with emptying channel 3, forecooler 5 is passed through in emptying channel 3.Rectifier bottoms are equipped with reboiler, and reboiler bottom connects There is discharge line 7, discharge line 7 is equipped with sampling valve.
Wherein, carbon dioxide purification channel 1 again passes by liquefier 4 after forecooler 5, finally connects rectifying column;Two Catalytic bed entrance is led to after heat exchanger, electric heater 6 in carbonoxide purification channel 1 again;Carbon dioxide purification channel 1 is from catalysis Bed again passes by heat exchanger after exporting out, then through subcooler, finally leads to adsorbent bed.
The working principle of above scheme is as follows:
1, carbon dioxide purification channel 1 connects the lower carbon dioxide storage tank of purity, and purification channel 1 first passes through liquefier 4 Realize heat exchange, elevated carbon dioxide gas temperature;
2, catalysis reaction: purification channel 1 makes internal gas heat up again by heat exchanger, electric heater 6, is urged with meeting Change reaction condition, comes out rear high-temperature gas from catalytic bed and flow back into heat exchanger by purifying channel 1 again, by heat recovery, finally Cool down through subcooler;
3, adsorb: four adsorbent beds are passed through in purification channel 1, and impurity is gradually adsorbed, then are filtered by accurate filter miscellaneous Matter;
4, forecooler 5 and liquefier 4 will be cooled to step by step liquid by the carbon dioxide gas of catalytic action and suction-operated Change, finally flows into rectifying column, a low temperature nitrogen pipeline can also be led to, individually on liquefier 4 to supplement carbon dioxide gas Liquefy institute's chilling requirement;
5, liquid carbon dioxide is heated to gaseous state rising by the reboiler of rectifier bottoms, the refrigerating channel at the top of rectifying column 2 carbon dioxide gas condensation liquefactions by rising, the lower impurity of boiling point is then discharged at the top of rectifying column with gaseous state, and is passed through Forecooler 5 is by cold recovery.
6, the sampling valve on reboiler bottom portion discharge tube 7 detects carbon dioxide purity, such as meets the requirements, then opens discharge Valve on pipeline 7 connects product storage tank.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore: it is all according to The equivalence changes that structure of the invention, shape, principle are done, should all be covered by within protection scope of the present invention.

Claims (5)

1. a kind of high-purity carbon dioxide equipment for purifying, the carbon dioxide purification channel (1) including connecting carbon dioxide storage tank is special Sign is: carbon dioxide purification channel (1) successively passes through liquefier (4), catalytic bed, adsorbent bed, forecooler (5), finally connects In the middle part of rectifying column, the bottom of rectifying column is provided with the discharge line (7) of the carbon dioxide after purification, and rectifier is equipped with inside It is connected with the refrigerating channel (2) of low temperature nitrogen, the output end of refrigerating channel (2) passes through liquefier (4), emptying is equipped at the top of rectifying column Forecooler (5) are passed through in channel (3), emptying channel (3);The carbon dioxide purification channel (1) passes through again after forecooler (5) Liquefier (4) are crossed, rectifying column is finally connected;The carbon dioxide purification channel (1) after heat exchanger, electric heater (6) again Lead to catalytic bed entrance;Carbon dioxide purification channel (1) again passes by heat exchanger after exporting out from catalytic bed, then through being subcooled But device finally leads to adsorbent bed.
2. high-purity carbon dioxide equipment for purifying according to claim 1, it is characterised in that: the rectifier bottoms are equipped with again Device is boiled, discharge line (7) is equipped with sampling valve.
3. high-purity carbon dioxide equipment for purifying according to claim 2, it is characterised in that: the adsorbent bed and forecooler (5) accurate filter is equipped between.
4. high-purity carbon dioxide equipment for purifying according to claim 3, it is characterised in that: there are four the adsorbent beds, and four A adsorbent bed connects into the multiple adsorbent bed group for being connected in series with each other or being connected in parallel with each other by pipeline and valve.
5. high-purity carbon dioxide equipment for purifying according to claim 4, it is characterised in that: the carbon dioxide purification channel (1) it is equipped with flowmeter.
CN201610884061.8A 2016-10-10 2016-10-10 High-purity carbon dioxide equipment for purifying Active CN106430194B (en)

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Application Number Priority Date Filing Date Title
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CN106430194B true CN106430194B (en) 2019-06-14

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110683546B (en) * 2019-11-11 2021-02-02 杭州快凯高效节能新技术有限公司 Method for removing hydrocarbon of carbon dioxide containing hydrocarbon impurities

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201520641U (en) * 2009-09-28 2010-07-07 苏州市金宏气体有限公司 High purity carbon dioxide extracting device
CN201545703U (en) * 2009-09-28 2010-08-11 苏州市金宏气体有限公司 Device for purifying carbon dioxide in recovered dry ice waste gas
CN102538395A (en) * 2012-03-05 2012-07-04 苏州市兴鲁空分设备科技发展有限公司 Carbon dioxide purification technology
CN202953825U (en) * 2012-11-30 2013-05-29 上海浦江特种气体有限公司 Electronic grade carbon dioxide purification device
CN206172984U (en) * 2016-10-10 2017-05-17 浙江海天气体有限公司 High -purity carbon dioxide purification equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201520641U (en) * 2009-09-28 2010-07-07 苏州市金宏气体有限公司 High purity carbon dioxide extracting device
CN201545703U (en) * 2009-09-28 2010-08-11 苏州市金宏气体有限公司 Device for purifying carbon dioxide in recovered dry ice waste gas
CN102538395A (en) * 2012-03-05 2012-07-04 苏州市兴鲁空分设备科技发展有限公司 Carbon dioxide purification technology
CN202953825U (en) * 2012-11-30 2013-05-29 上海浦江特种气体有限公司 Electronic grade carbon dioxide purification device
CN206172984U (en) * 2016-10-10 2017-05-17 浙江海天气体有限公司 High -purity carbon dioxide purification equipment

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Address after: 317000 southeast of line A3, Linhai Park, chemical API base, Taizhou City, Zhejiang Province

Patentee after: ZHEJIANG HAICHANG GAS Co.,Ltd.

Address before: No. 391, Dongfang Avenue, Linhai, Taizhou, Zhejiang

Patentee before: ZHEJIANG HAITIAN GAS Co.,Ltd.

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