CN102390831A - Modified dry ice production method and device - Google Patents
Modified dry ice production method and device Download PDFInfo
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- CN102390831A CN102390831A CN2011102307186A CN201110230718A CN102390831A CN 102390831 A CN102390831 A CN 102390831A CN 2011102307186 A CN2011102307186 A CN 2011102307186A CN 201110230718 A CN201110230718 A CN 201110230718A CN 102390831 A CN102390831 A CN 102390831A
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Abstract
The invention relates to production of dry ice, and particularly discloses a dry ice production method and a dry ice production device. The dry ice production method comprises the following steps of: performing reduced pressure expansion on liquid carbon dioxide, wherein a part of the liquid carbon dioxide is gasified; absorbing heat from non-gasified liquid carbon dioxide to reduce the temperature of the non-gasified liquid carbon dioxide; and then feeding the liquid carbon dioxide after the reduced pressure expansion to a dry ice machine. The dry ice production device consists of a carbon dioxide storage tank, a buffer tank with an automatic adjustment discharge valve and the dry ice machine, wherein the automatic adjustment discharge valve is used for controlling pressure in the buffer tank to keep the pressure lower than the pressure in the liquid carbon dioxide storage tank; and the buffer tank with the automatic adjustment discharge valve is positioned between the liquid carbon dioxide storage tank and the dry ice machine in the flow of the dry ice production device.
Description
Technical field
The present invention relates to a kind of dry ice production method and device thereof.
Background technology
Fig. 2 illustrates a kind of dry ice production device.As shown in Figure 2, the pressure of coming from Liquid carbon dioxide storage tank 110 is that 1.5～1.8Mpa, temperature are that 21～-24 ℃ Liquid carbon dioxide directly gets into dry ice machine 130 and processes dry ice.
At present; Because the restriction of homemade dry ice machine technology level; It is that 1.4～1.8Mpa, temperature are about 2.5 tons of the Liquid carbon dioxide of l6～-24 ℃ that 1 ton of normal pressure of every production ,-75～-79 ℃ dry ice need pressure; Wherein, it is that 1.4～1.8Mpa, temperature are that 16～-24 ℃ Liquid carbon dioxide becomes the emptying of normal pressure gaseous carbon dioxide in producing the dry ice process that 1.5 tons of pressure are arranged approximately, only has 40% Liquid carbon dioxide to change dry ice into.Adopt dry ice production device shown in Figure 2, not only cause the significant wastage of Liquid carbon dioxide, the more important thing is that great amount of carbon dioxide directly enters atmosphere, will make atmospheric Greenhouse effect more and more serious.
Summary of the invention
The present invention will provide a kind of improved dry ice production method and device thereof.
Dry ice production method of the present invention comprises the following steps:
Make at first decompressional expansion of Liquid carbon dioxide, wherein the partially liq carbon dioxide gasification never absorbs heat in the Liquid carbon dioxide of gasification, and the Liquid carbon dioxide temperature of gasification does not reduce, and then the Liquid carbon dioxide after the step-down cooling is sent into the dry ice machine.
Preferably, utilize surge tank to make Liquid carbon dioxide step-down cooling with automatic adjusting bleed valve.
Dry ice production device of the present invention; Become with dry ice mechanism by Liquid carbon dioxide storage tank, surge tank with automatic adjusting bleed valve; The pressure that should automatically regulate in this surge tank of bleed valve control be lower than the pressure in this Liquid carbon dioxide storage tank, have this this surge tank of regulating bleed valve automatically on this dry ice production device flow process between this Liquid carbon dioxide storage tank and this dry ice machine.
Dry ice production method of the present invention and device thereof have increased the surge tank with automatic adjusting bleed valve in dry ice production device shown in Figure 2, utilize this surge tank with automatic adjusting bleed valve to make at first decompressional expansion of Liquid carbon dioxide; Wherein the partially liq carbon dioxide gasification never absorbs heat in the Liquid carbon dioxide of gasification, and the Liquid carbon dioxide temperature of gasification does not reduce; Then the Liquid carbon dioxide after the step-down cooling is sent into the dry ice machine; Like this, produce 1 ton of dry ice and only need 1.8 tons of Liquid carbon dioxides, 55.6% Liquid carbon dioxide changes dry ice into; Only there is the emptying in producing the dry ice process of 0.8 ton of Liquid carbon dioxide to run off; Not only improve the utilization ratio of Liquid carbon dioxide greatly, and reduced the amount that is discharged into atmospheric carbon dioxide in the atmosphere significantly, helped environment protection.
Description of drawings
Fig. 1 is a dry ice production schematic representation of apparatus of the present invention;
Fig. 2 is the dry ice production schematic representation of apparatus of background technology.
Embodiment
Embodiment to dry ice production method of the present invention and device thereof is described in detail with reference to the accompanying drawings, and the feature and advantage of dry ice production method of the present invention and device thereof will become more obvious.
Referring to Fig. 1; Dry ice production method of the present invention; Comprise the steps: from the pressure that Liquid carbon dioxide storage tank 210 is come to be that 1.5～1.8Mpa, temperature are-21～-24 ℃ Liquid carbon dioxide entering surge tank 220; Surge tank 220 has automatic adjusting bleed valve 221; Automatically regulate the pressure in the bleed valve 221 control surge tanks 220; Make it remain at 0.8～1.0Mpa, the pressure of coming from Liquid carbon dioxide storage tank 210 is that 1.5～1.8Mpa, temperature are that-21～-24 ℃ Liquid carbon dioxide gets into surge tank 220 back pressure drop to 0.8～1.0Mpa, and partial pressure is that 1.5～1.8Mpa, temperature be to absorb heat Liquid carbon dioxide moment of-21～-24 ℃ to evaporate into dioxide gas; Be recycled to the virgin gas that is used to produce Liquid carbon dioxide by automatic adjusting bleed valve 221 discharges; Remaining most of pressure is that 1.5～1.8Mpa, temperature have been absorbed heat for-21～24 ℃ Liquid carbon dioxide, and temperature drops to-41～-45 ℃, is that 0.8～1.0Mpa, temperature be that-41～-45 ℃ liquid-liquid carbonic acid gas entering dry ice machine 230 is processed normal pressure ,-75～-79 ℃ dry ice through the pressure of decrease temperature and pressure.
Referring to Fig. 1; Dry ice production device of the present invention; Constitute by Liquid carbon dioxide storage tank 210, surge tank 220 and dry ice machine 230 with automatic adjusting bleed valve 221, the surge tank 220 with automatic adjusting bleed valve 221 on the dry ice production device flow process between Liquid carbon dioxide storage tank 210 and dry ice machine 230.
Describing the present invention property and nonrestrictive description according to the embodiment of the present invention, but should be understood that and do not breaking away under the situation of the relevant protection domain that limits claim that those skilled in the art can make change and/or revise.
Claims (3)
1. a dry ice production method comprises the following steps:
Make at first decompressional expansion of Liquid carbon dioxide, wherein the partially liq carbon dioxide gasification never absorbs heat in the Liquid carbon dioxide of gasification, and the Liquid carbon dioxide temperature of gasification does not reduce, and then the Liquid carbon dioxide after the step-down cooling is sent into the dry ice machine.
2. according to the described dry ice production method of claim 1, it is characterized in that: utilize surge tank to make Liquid carbon dioxide step-down cooling with automatic adjusting bleed valve.
3. dry ice production device; It is characterized in that: become with dry ice mechanism by Liquid carbon dioxide storage tank, surge tank with automatic adjusting bleed valve; The pressure that should automatically regulate in this surge tank of bleed valve control be lower than the pressure in this Liquid carbon dioxide storage tank, have this this surge tank of regulating bleed valve automatically on this dry ice production device flow process between this Liquid carbon dioxide storage tank and this dry ice machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102307186A CN102390831A (en) | 2011-08-12 | 2011-08-12 | Modified dry ice production method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102307186A CN102390831A (en) | 2011-08-12 | 2011-08-12 | Modified dry ice production method and device |
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| Publication Number | Publication Date |
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| CN102390831A true CN102390831A (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011102307186A Pending CN102390831A (en) | 2011-08-12 | 2011-08-12 | Modified dry ice production method and device |
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| CN (1) | CN102390831A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386695A (en) * | 2014-11-18 | 2015-03-04 | 福建省万旗非金属材料有限公司 | Equipment for realizing zero discharge of carbon dioxide in calcium oxide production |
| CN106744957A (en) * | 2017-03-15 | 2017-05-31 | 长沙紫宸科技开发有限公司 | A kind of pump pressure type dry-ice machine |
| CN110160316A (en) * | 2019-04-26 | 2019-08-23 | 大连伊立特科技有限公司 | Dry-ice machine CO 2 waste gas processing unit |
| CN110294478A (en) * | 2019-04-26 | 2019-10-01 | 大连伊立特科技有限公司 | Dry-ice machine and dry ice production method with pre-crystallized tank |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5869712A (en) * | 1981-10-16 | 1983-04-26 | Nippon Tansan Kk | Apparatus for producing dry ice |
| JPH05229811A (en) * | 1991-02-28 | 1993-09-07 | Tokyo Reinetsu Sangyo Kk | Production of solid carbon dioxide |
| CN101913604A (en) * | 2010-07-20 | 2010-12-15 | 浙江大学 | Device and method for manufacturing dry ice by using liquefied natural gas cold energy |
-
2011
- 2011-08-12 CN CN2011102307186A patent/CN102390831A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5869712A (en) * | 1981-10-16 | 1983-04-26 | Nippon Tansan Kk | Apparatus for producing dry ice |
| JPH05229811A (en) * | 1991-02-28 | 1993-09-07 | Tokyo Reinetsu Sangyo Kk | Production of solid carbon dioxide |
| CN101913604A (en) * | 2010-07-20 | 2010-12-15 | 浙江大学 | Device and method for manufacturing dry ice by using liquefied natural gas cold energy |
Non-Patent Citations (1)
| Title |
|---|
| 顾安忠等: "《工业气体集输新技术》", 31 January 2007 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386695A (en) * | 2014-11-18 | 2015-03-04 | 福建省万旗非金属材料有限公司 | Equipment for realizing zero discharge of carbon dioxide in calcium oxide production |
| CN104386695B (en) * | 2014-11-18 | 2016-06-08 | 福建省万旗非金属材料有限公司 | Carbon dioxide zero discharge equipment produced by a kind of calcium oxide |
| CN106744957A (en) * | 2017-03-15 | 2017-05-31 | 长沙紫宸科技开发有限公司 | A kind of pump pressure type dry-ice machine |
| CN106744957B (en) * | 2017-03-15 | 2019-07-09 | 长沙紫宸科技开发有限公司 | A kind of pump pressure type dry-ice machine |
| CN110160316A (en) * | 2019-04-26 | 2019-08-23 | 大连伊立特科技有限公司 | Dry-ice machine CO 2 waste gas processing unit |
| CN110294478A (en) * | 2019-04-26 | 2019-10-01 | 大连伊立特科技有限公司 | Dry-ice machine and dry ice production method with pre-crystallized tank |
| CN110160316B (en) * | 2019-04-26 | 2024-04-12 | 大连伊立特科技有限公司 | Carbon dioxide waste gas treatment device of dry ice machine |
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Application publication date: 20120328 |