CN103143240B - A kind of carbon dioxide drying system and separation method thereof - Google Patents
A kind of carbon dioxide drying system and separation method thereof Download PDFInfo
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- CN103143240B CN103143240B CN201310048564.8A CN201310048564A CN103143240B CN 103143240 B CN103143240 B CN 103143240B CN 201310048564 A CN201310048564 A CN 201310048564A CN 103143240 B CN103143240 B CN 103143240B
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- drier
- carbon dioxide
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- forecooler
- dust filter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
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- Drying Of Gases (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
A kind of carbon dioxide drying system and separation method thereof, comprise the forecooler, separator, drier, dust filter unit and the heat exchanger that connect in turn, electric heater is in series with between described forecooler and described drier, the quantity of described drier is 3, and unstripped gas flows through described drier from the bottom to top; This system can automatically switch flow process, makes full use of the heat of regeneration gas, economize energy.
Description
Technical field
The present invention relates to a kind of space division system and separation method, particularly relate to a kind of carbon dioxide drying system and separation method thereof.
Background technology
Carbon dioxide drying system is applicable to the industries such as sky divides, gas purification, especially the reclaiming clean of carbon dioxide is applied to, molecular sieve, alumina adsorbant is provided with in drier, carbon dioxide enters drier bed, through molecular sieve, aluminium oxide removing moisture, reaches the effect of purge drying carbon dioxide, prior art is generally two bed dryers, in absorption, in regeneration, the waste heat do not utilized can be wasted like this for one for one.
Summary of the invention
The object of this invention is to provide a kind of carbon dioxide drying system and separation method thereof, this system can automatically switch flow process, makes full use of the heat of regeneration gas, economize energy.
Concrete scheme of the present invention is:
A kind of carbon dioxide drying system, comprise the forecooler, separator, drier, dust filter unit and the heat exchanger that connect in turn, between described forecooler and described drier, be in series with electric heater, the quantity of described drier is 3, and unstripped gas flows through described drier from the bottom to top.
Further, described 3 driers are arranged in parallel between described separator and described dust filter unit.
Further, described drier import, outlet are provided with valve, and described valve controls it by control system and opens or closes.
Further, described control system is PLC control system.
Further, the quantity of described dust filter unit is 2, and described 2 dust filter units are arranged in parallel.
A kind of method of carbon dioxide separation, the method comprises the steps: to enter separator dehydration after unstripped gas enters forecooler precooling, then enter drier, discharge after being arranged on the moisture in the mol sieve beds adsorbing and removing unstripped gas in described drier.Then dust filter unit removing particulate contamination is entered, finally enter heat exchanger deep cooling unstripped gas, after described drier adsorption moisture is saturated, regenerated from forecooler blow-back drier out by electric heater heating, the quantity of described drier is 3.
Further, described drier process unstripped gas comprises absorption successively according to time sequencing, regenerates and preheat, and described 3 driers are alternately in absorption, regenerate and preheat three duties.
Adopt technique scheme, technique effect of the present invention has:
Three driers that this drying system can realize drying system automatically switch, and ensure equipment security of operation, save human cost.Relative to traditional drying system, the present invention can the heat of better reclaiming gas, saves energy consumption.
Dust filter unit in the present invention totally two groups, the using and the reserved, one group of pressure reduction as used has obvious increase, when needs cleaning or more renew cartridge, is switched to other one group of use.
Accompanying drawing explanation
Fig. 1 is the structural representation of carbon dioxide drying system provided by the invention;
Fig. 2 is the process chart of carbon dioxide separation method provided by the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, a kind of carbon dioxide drying system, comprise 1 forecooler 1 connected in turn, 1 separator 3, 3 driers 5 in parallel, 2 dust filter units 6 in parallel and 1 heat exchanger 2, 2 electric heaters 4 in parallel are in series with between forecooler 1 with drier 5, wherein dust filter unit 6 totally two groups, the using and the reserved, if the one group of pressure reduction used has obvious increase, when needs cleaning or more renew cartridge, dust filter unit 6 is switched to other one group of use, drier 5 is made up of the hydrostatic column of three groups (only) vertical dress, drier 5 import is arranged on its underpart, outlet is arranged on its top, the import of three driers 5, outlet is provided with valve, this valve controls it by PLC control system and opens or closes, three driers 5 are made to carry out alternation, namely a drier operates in absorption duty, a drier is in preheated state, one then operates in reproduced state.Be in the drier 5 of absorption duty, when carbon dioxide is by molecular sieve, the absorption of dried dose of moisture wherein, make carbon dioxide obtain drying, water content reaches below 20ppm.Through absorption after a while, drier regenerates with regard to needs, by reclaiming the gas of forecooler 1 after electric heater 4 heats, blowback drier 5 preheats, and makes the drier in it parse moisture, regenerate, now, the drier after regeneration drops into absorption work again, and pre-warmed drier starts regeneration, adsorb saturated drier then to start to preheat, the alternation of three groups of (only) driers.
As shown in Figure 2, a kind of method of carbon dioxide separation, the method comprises the steps: that the unstripped gas after removing sulphur component wherein enters forecooler, after preliminary cooling, saturated vaporous water is made to be converted into the water of free state, the water of most of free state in separator removing unstripped gas, then drier bed is entered from drier bottom, through molecular sieve, aluminium oxide removing moisture, then dust filter unit removing particulate contamination is entered, finally enter heat exchanger deep cooling unstripped gas, drier process unstripped gas comprises absorption successively according to time sequencing, regenerate and preheat, after described drier adsorption moisture is saturated, regenerated from forecooler blow-back drier out by electric heater heating, the quantity of drier is 3, 3 driers are alternately in absorption, regenerate and preheat three duties.
Embodiment 1
Three driers A, B, C are mutual alternations, and when A is in absorption duty, B is in reproduced state, and C is then in preheated state; When B is in absorption duty, C is in reproduced state, and A is then in preheated state; When C is in absorption duty, B is in preheated state, and A is then in reproduced state.
Three drier automatic control process half periods divide 15 steps to carry out, and when changeover program starts, are namely in the first step.
First step A adsorbs, and B heats, C release, and electric heater is opened, timing 20 points;
Second step A adsorbs, and B heats, and C leaves standstill, and electric heater is opened, timing 50 points;
3rd step A absorption, B cold blowing, C preheating, electric heater cuts out, timing 240 points;
4th step A absorption, B all presses, and C heats, and electric heater is opened, timing 45 points;
5th step A absorption, B walks abreast, and C heats, and electric heater is opened, timing 5 points;
6th step A release, B adsorbs, and C heats, and electric heater is opened, timing 20 points;
7th step A leaves standstill, and B adsorbs, and C heats, and electric heater is opened, timing 50 points;
8th step A preheating, B adsorbs, C cold blowing, and electric heater cuts out, timing 240 points;
9th step A heating, B adsorbs, and C all presses, and electric heater is opened, timing 45 points;
Tenth step A heating, B adsorbs, and C walks abreast, and electric heater is opened, timing 5 points;
11 step A heating, B release, C adsorbs, and electric heater is opened, timing 20 points;
12 step A heating, B leaves standstill, and C adsorbs, and electric heater is opened, timing 50 points;
13 step A cold blowing, B preheating, C adsorbs, and electric heater cuts out, timing 240 points;
14 step A all presses, and B heats, and C adsorbs, and electric heater is opened, timing 45 points;
15 step A walks abreast, and B heats, and C adsorbs, and electric heater is opened, timing 5 points.
Carbon dioxide is after drier, and wherein water component is deviate to below 20ppm, discharges enter dust filter unit 6 from bed top.Powder can be sieved by filtering molecular, when gas enters heat exchanger 2 after filtering in dust filter unit 6.With the carbon dioxide heat exchange of backflowing in heat exchanger, after preliminary cooling, enter liquefying and rectifying operation.Dust filter unit totally two groups, the using and the reserved, but the one group of pressure reduction used has when obviously increasing, need cleaning or more renew cartridge, are now switched to other one group of use.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (1)
1. the method for a carbon dioxide separation, depend on the method described in the operation of a kind of carbon dioxide drying system, it is characterized in that, comprise 1 forecooler connected in turn, 1 separator, 3 driers in parallel, 2 dust filter units in parallel and 1 heat exchanger, 2 electric heaters in parallel are in series with between forecooler with drier, wherein dust filter unit totally two groups, the using and the reserved, if the one group of pressure reduction used has obvious increase, when needs cleaning or more renew cartridge, dust filter unit is switched to other one group of use, drier is made up of the hydrostatic column of three vertical dresses, drier import is arranged on its underpart, outlet is arranged on its top, the import of three driers, outlet is provided with valve, this valve controls it by PLC control system and opens or closes, three driers are made to carry out alternation, namely a drier operates in absorption duty, a drier is in preheated state, one then operates in reproduced state, be in the drier of absorption duty, when carbon dioxide is by molecular sieve, the absorption of dried dose of moisture wherein, make carbon dioxide obtain drying, water content reaches below 20ppm, through absorption after a while, drier regenerates with regard to needs, by reclaiming the gas of forecooler after electric heater heating, blowback drier preheats, and makes the drier in it parse moisture, regenerate, now, the drier after regeneration drops into absorption work again, and pre-warmed drier starts regeneration, adsorb saturated drier then to start to preheat, three drier alternations,
Described method comprises the steps: that the unstripped gas after removing sulphur component wherein enters forecooler, after preliminary cooling, saturated vaporous water is made to be converted into the water of free state, the water of most of free state in separator removing unstripped gas, then drier bed is entered from drier bottom, through molecular sieve, aluminium oxide removing moisture, then dust filter unit removing particulate contamination is entered, finally enter heat exchanger deep cooling unstripped gas, drier process unstripped gas comprises absorption successively according to time sequencing, regenerate and preheat, after described drier adsorption moisture is saturated, regenerated from forecooler blow-back drier out by electric heater heating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310048564.8A CN103143240B (en) | 2013-02-06 | 2013-02-06 | A kind of carbon dioxide drying system and separation method thereof |
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| CN201310048564.8A CN103143240B (en) | 2013-02-06 | 2013-02-06 | A kind of carbon dioxide drying system and separation method thereof |
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| CN103143240B true CN103143240B (en) | 2015-09-02 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962186A (en) * | 2009-07-23 | 2011-02-02 | 苏庆泉 | Heat-supply and carbon-dioxide capturing system and method |
| CN203159234U (en) * | 2013-02-06 | 2013-08-28 | 珠海共同机械设备有限公司 | Carbon dioxide drying system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6669916B2 (en) * | 2001-02-12 | 2003-12-30 | Praxair Technology, Inc. | Method and apparatus for purifying carbon dioxide feed streams |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962186A (en) * | 2009-07-23 | 2011-02-02 | 苏庆泉 | Heat-supply and carbon-dioxide capturing system and method |
| CN203159234U (en) * | 2013-02-06 | 2013-08-28 | 珠海共同机械设备有限公司 | Carbon dioxide drying system |
Non-Patent Citations (2)
| Title |
|---|
| 1万吨二氧化碳提纯液化装置;mf416;《百度文库》;20101021;第2.1节 * |
| 3000t/a 食品级液体二氧化碳生产装置;田青等;《氮肥技术》;20061231;第2.2节 * |
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| CN103143240A (en) | 2013-06-12 |
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Address after: Han Qing Lu Pingsha town in Guangdong Province, Zhuhai City, No. 129, 519055 Applicant after: Zhuhai Common Low Carbon Technology Co., Ltd. Address before: Han Qing Lu Pingsha town in Guangdong Province, Zhuhai City, No. 129, 519055 Applicant before: Zhuhai GongTong Mechanical Equipment Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: ZHUHAI GONGTONG MECHANICAL EQUIPMENT CO., LTD. TO: ZHUHAI COMMON LOW CARBON TECHNOLOGY CO., LTD. |
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