JPH01320213A - Production of solid carbon dioxide having excellent transparency and device of same - Google Patents
Production of solid carbon dioxide having excellent transparency and device of sameInfo
- Publication number
- JPH01320213A JPH01320213A JP63152670A JP15267088A JPH01320213A JP H01320213 A JPH01320213 A JP H01320213A JP 63152670 A JP63152670 A JP 63152670A JP 15267088 A JP15267088 A JP 15267088A JP H01320213 A JPH01320213 A JP H01320213A
- Authority
- JP
- Japan
- Prior art keywords
- carbon dioxide
- pressure vessel
- carbonic acid
- vessel
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 39
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 39
- 239000007787 solid Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000003507 refrigerant Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000000859 sublimation Methods 0.000 description 2
- 230000008022 sublimation Effects 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/50—Carbon dioxide
- C01B32/55—Solidifying
-
- 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
- Y02P20/141—Feedstock
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、透明性に優れた固体炭酸の製造方法およびそ
の装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method and apparatus for producing solid carbonic acid with excellent transparency.
従来技術とその問題点
現在固体炭酸の製造方法としては、以下のようなものが
知られている。Prior art and its problems The following methods are currently known as methods for producing solid carbonic acid.
（イ）液化炭酸ガスを容器内で断熱膨張させ、生成する
雪状固体炭酸を圧縮固化して、製品とする（特開昭６１
−１７４１４号公報、特開昭６１−４０８０８号公報な
ど）。(b) Liquefied carbon dioxide gas is adiabatically expanded in a container, and the resulting snow-like solid carbon dioxide is compressed and solidified to produce a product (Japanese Patent Laid-Open No. 61
-17414, JP-A-61-40808, etc.).
この方法におけるＣｏ２の歩留りは、４０〜５０％程度
に過ぎないので、製造コストが高くなる欠点がある。ま
た、雪状固体炭酸の圧縮に際して微小な気泡が取込まれ
るため、密度が低く、製品が白色不透明となり、商品価
値が低下する。Since the yield of Co2 in this method is only about 40 to 50%, there is a drawback that the manufacturing cost is high. Furthermore, since minute air bubbles are taken in when compressing the snow-like solid carbon dioxide, the density is low and the product becomes white and opaque, reducing its commercial value.
（ロ）昇華温度以下に冷却した容器内に炭酸ガスを導入
し、容器壁に付着形成される雪状固体炭酸を回収し、圧
縮固化して、製品とする（特公昭５７−５３２８８号公
報）。(b) Carbon dioxide gas is introduced into a container that has been cooled to below the sublimation temperature, and the snow-like solid carbon dioxide that forms on the container wall is collected and compressed and solidified to produce a product (Japanese Patent Publication No. 57-53288) .
この場合にも、得られる製品は、やはり密度が低く、白
色不透明となる。In this case, the resulting product will still have a low density and will be white and opaque.
問題点を解決するための手段
本発明者は、上記の如き技術の現状に鑑みて種々研究を
重ねた結果、炭酸ガスの温度−圧力特性を利用すること
により、従来技術の問題点を大巾に軽減し得る固体炭酸
の製造技術を確立することに成功した。Means for Solving the Problems As a result of various studies in view of the current state of the technology as described above, the inventor of the present invention has solved the problems of the prior art by making use of the temperature-pressure characteristics of carbon dioxide gas. We succeeded in establishing a manufacturing technology for solid carbonic acid that can reduce the amount of carbon dioxide.
すなわち、本発明は、下記の固体炭酸製造方法およびそ
の装置を提供するものである：■炭酸ガスを臨界温度以
下且つ三重点温度以上の温度で圧力容器内で加圧して液
化し、液状に保持した状態で三重点未満に冷却して固化
させる固体炭酸の製造法において、Ｌ Ｎ Ｇおよび／
またはＬＰＧと熱交換した冷媒により上記圧力容器内の
液体炭酸を間接的に冷却固化させ、生成した固体炭酸を
連続的に容器外に取出すことを特徴とする透明性に優れ
た固体炭酸の製造法；および■液化炭酸ガスを三重点未
満に冷却して固化させるための圧力容器、加圧された液
化炭酸ガスを供給するために該圧力容器の一端に接続さ
れた液化炭酸ガス供給機構、液化炭酸ガスを間接冷却す
るために該圧力容器の外壁に沿って設けられた冷媒回路
、および形成された固体炭酸を保持し且つ圧力容器外に
取り出すために該圧力容器の他の一端側に設けられたス
トッパーを備えたことを特徴とする固体炭酸の製造装置
。That is, the present invention provides the following method for producing solid carbon dioxide and its apparatus: ■ Liquefying carbon dioxide gas by pressurizing it in a pressure vessel at a temperature below the critical temperature and above the triple point temperature, and maintaining it in a liquid state. A method for producing solid carbonic acid in which L N G and/or
Alternatively, a method for producing solid carbonic acid with excellent transparency, characterized by indirectly cooling and solidifying the liquid carbonic acid in the pressure vessel using a refrigerant that has exchanged heat with LPG, and continuously taking out the generated solid carbonic acid outside the container. ; and (i) a pressure vessel for cooling and solidifying liquefied carbon dioxide to below the triple point, a liquefied carbon dioxide supply mechanism connected to one end of the pressure vessel to supply pressurized liquefied carbon dioxide, and liquefied carbon dioxide. A refrigerant circuit provided along the outer wall of the pressure vessel for indirect cooling of the gas, and a refrigerant circuit provided at the other end of the pressure vessel for retaining the solid carbon dioxide formed and taking it out of the pressure vessel. A solid carbonic acid production device characterized by being equipped with a stopper.
以下図面に示す実施態様を参照しつつ、本発明を説明す
る。The present invention will be described below with reference to embodiments shown in the drawings.
第１図は、本発明で使用する固体炭酸製造装置の一例の
概略を示す部分断面図である。なお、第１図においては
、原料から製品に至る流れは、垂直方向に描かれている
が、本発明における原料から製品に至る流れは、斜め上
方から斜め下方に傾斜していても良く、或いは水平方向
であっても良い。FIG. 1 is a partial sectional view schematically showing an example of a solid carbon dioxide production apparatus used in the present invention. In addition, in FIG. 1, the flow from the raw material to the product is drawn in a vertical direction, but the flow from the raw material to the product in the present invention may be inclined from diagonally upward to diagonally downward, or It may be in the horizontal direction.
図示の本発明装置においては、圧力容器（１）の上端側
に、ポンプ（３）を備えた加圧液化炭酸ガス供給管（５
）が接続されている。ポンプ（３）および加圧液化炭酸
ガス供給管（５）は、圧力計（７）とともに、液化炭酸
ガス供給機構を構成している。圧力容器（１）の外壁に
沿って、圧力容器（１）内の液化炭酸ガスを間接的に冷
却するための冷媒用蛇管（９）が設けられている。圧力
容器（１）の下端側には、駆動部（１１）により圧力容
器（１）の軸方向に対する相対的位置を適宜変更し得る
木製または金属製のストッパー（１３）が設けられてい
る。また、圧力容器（１）の下方には、形成された固体
炭酸を保持して系外に案内するとともに、その製造速度
を制御するために、例えば、無限軌道タイプの回転ベル
ト式の保持機構（１５）が設けられている。In the illustrated apparatus of the present invention, a pressurized liquefied carbon dioxide gas supply pipe (5) equipped with a pump (3) is provided at the upper end side of the pressure vessel (1).
) are connected. The pump (3) and the pressurized liquefied carbon dioxide supply pipe (5) together with the pressure gauge (7) constitute a liquefied carbon dioxide supply mechanism. A refrigerant corrugated pipe (9) for indirectly cooling the liquefied carbon dioxide inside the pressure vessel (1) is provided along the outer wall of the pressure vessel (1). A stopper (13) made of wood or metal is provided on the lower end side of the pressure vessel (1) so that the relative position of the pressure vessel (1) with respect to the axial direction can be appropriately changed by a drive unit (11). Further, below the pressure vessel (1), in order to hold the formed solid carbon dioxide and guide it out of the system, and to control the production speed, a holding mechanism (for example, a rotating belt type of endless track type) ( 15) is provided.
本発明方法を実施するに際しては、まず、図示する様に
、ストッパー（１３）を圧力容器（１）の内部に移動さ
せ、圧力容器（１）の底部を閉じて内部を気密状態とす
る。次いで、予め液化しである炭酸ガスをポンプ（３）
により加圧しつつ（通常６〜２０ｋｇ／ｃ♂程度）、圧
力容器（１）に送り込む。圧力容器（１）の外壁に沿っ
て設けられている冷媒用蛇管（９）には、ＬＮＧなどの
低温媒体、またはこれらの低温媒体により冷却された冷
媒（フロン系冷媒、液体窒素など）が、下方から上方に
向けて送られ、圧力容器（１）内の液体炭酸ガスをさら
に一層冷却する。かくして、圧力容器（１）の下部のス
トッパー（１３）上には、次第に固体炭酸が堆積し始め
るので、固体炭酸の製造が定常状態となった時点で、駆
動部（１１）によりストッパー（１３）を徐々に下方に
移動させ、固体炭酸をゆっくりと圧力容器（１）の外に
取出す。When carrying out the method of the present invention, first, as shown in the figure, the stopper (13) is moved inside the pressure vessel (1), and the bottom of the pressure vessel (1) is closed to make the inside airtight. Next, pump the carbon dioxide gas that has been liquefied in advance (3)
While pressurizing (usually about 6 to 20 kg/c♂), it is fed into the pressure vessel (1). The refrigerant serpentine pipe (9) provided along the outer wall of the pressure vessel (1) contains a low-temperature medium such as LNG, or a refrigerant cooled by such a low-temperature medium (fluorocarbon refrigerant, liquid nitrogen, etc.). It is sent from the bottom to the top to further cool the liquid carbon dioxide inside the pressure vessel (1). In this way, solid carbonic acid gradually begins to accumulate on the stopper (13) at the bottom of the pressure vessel (1), so when the production of solid carbonic acid reaches a steady state, the drive unit (11) removes the stopper (13). is gradually moved downward, and the solid carbonic acid is slowly taken out of the pressure vessel (1).
固体炭酸の先端部分が保持機構（１５）に接触する位置
に到達すると、ストッパー（１３）を側方（例えば、図
面に垂直な方向）に移動させ、以後は固体炭酸を保持機
構（１５）により保持しつつ、下方に送る。保持機構（
１５）の下方には、切断機構（図示せず）が設けられて
おり、固体炭酸を所定の長さに切断する。When the tip of the solid carbonic acid reaches the position where it contacts the holding mechanism (15), the stopper (13) is moved to the side (for example, in a direction perpendicular to the drawing), and from then on, the solid carbonic acid is held by the holding mechanism (15). Hold it and send it downward. Retention mechanism (
A cutting mechanism (not shown) is provided below 15) to cut the solid carbonic acid into a predetermined length.
本発明においては、圧力容器（１）の断面形状は、円形
、四角形、多角形などの任意の形状であって良い。また
、圧力容器（１）の内面は、固体炭酸の固着を防止して
、取出しを円滑に行うために、鏡面仕上げ（１７）とし
ておくことが、好ましい。冷媒の冷却は、技術的には、
ＬＮＧなどの冷熱を利用する以外の手段によっても、行
い得るが、コスト高となる。In the present invention, the cross-sectional shape of the pressure vessel (1) may be any shape such as circular, quadrangular, or polygonal. Further, the inner surface of the pressure vessel (1) is preferably mirror-finished (17) in order to prevent solid carbon dioxide from sticking and to facilitate removal. Technically, refrigerant cooling is
This can also be done by means other than using cold energy such as LNG, but this will be costly.
本発明によれば、以下の如き顕著な効果が奏される。According to the present invention, the following remarkable effects are achieved.
（ａ）液体炭酸を使用するので、炭酸ガスの歩留りは、
はぼ１００％となる。(a) Since liquid carbonic acid is used, the yield of carbonic acid gas is
It will be 100%.
（ｂ）冷媒の冷却にＬＮＧまたはＬＰＧの冷熱を使用す
るので、製造コストが低い。(b) Since the cold energy of LNG or LPG is used to cool the refrigerant, manufacturing costs are low.
（ｃ）大寸法（特に長寸）の固体炭酸を製造することが
できる。(c) Solid carbonic acid of large dimensions (particularly long dimensions) can be produced.
（ｄ）得られた固体炭酸は、気泡が存在しないので、密
度が高い。従って、昇華速度が遅く、冷却剤などとして
の効果が長期的に持続する。(d) The obtained solid carbonic acid has a high density since there are no air bubbles. Therefore, the sublimation rate is slow and the effect as a coolant etc. lasts for a long time.
（ｅ）また、得られた固体炭酸は、透明性に優れている
。(e) Furthermore, the obtained solid carbonic acid has excellent transparency.
（ｆ）上記（ｄ）および（ｅ）の結果として、本発明方
法による固体炭酸は、商品価値が極めて高い。(f) As a result of (d) and (e) above, the solid carbonic acid obtained by the method of the present invention has extremely high commercial value.
実施例
以下に実施例を示し、本発明の特徴とするところをより
一層明確にする。EXAMPLES Examples will be shown below to further clarify the features of the present invention.
実施例１ 第１図に示す装置を使用して、固体炭酸を製造した。Example 1 Solid carbonic acid was produced using the apparatus shown in FIG.
ストッパー（１３）を圧力容器（１）の内部に移動させ
、圧力容器（１）の底部を閉じた状態で、外径３４ ｍ
ｍ、肉厚３． ２ｍｍ、長さ１０００ｍｍのステンレス
スチール製の圧力容器（１）の外壁に沿って設けられて
いる冷媒用蛇管（９）に−１５０°ＣのＬＮＧを送り、
圧力容器（１）を十分に予冷した。With the stopper (13) moved inside the pressure vessel (1) and the bottom of the pressure vessel (1) closed, the outer diameter is 34 m.
m, wall thickness 3. -150°C LNG is sent to a refrigerant corrugated pipe (9) installed along the outer wall of a stainless steel pressure vessel (1) with a diameter of 2 mm and a length of 1000 mm.
The pressure vessel (1) was sufficiently precooled.
次いで、−３０°Ｃに冷却された液体炭酸をポンプ（３
）により４．５１／ｈｒの割合で圧力容器（１）内に導
入した。この時の系内の圧力は、１４ｋｇ／ｃＪであっ
た。また、この間にも、ＬＮＧによる冷却を引続き行っ
た（定常状態到達後の蛇管（９）の入口でのＬＮＧ温度
は、−１５０°Ｃであり、出口での温度は、−５０°Ｃ
であった。）液体炭酸の導入開始から１０分後に、スト
ッパー （１３）上で固体炭酸が氷結していることを確
認した後、ストッパー（１３）をゆっくりと降下させ、
内部圧で押出されてくる固体炭酸を保持機構（１５）に
より保持しつつ、２〜４ｍｍ／ｓｅｃの速度で連続的に
系外に取出した。生産量は、約７ｋｇ／ｈｒであった。Next, liquid carbonic acid cooled to -30°C was pumped (3
) into the pressure vessel (1) at a rate of 4.51/hr. The pressure within the system at this time was 14 kg/cJ. Also, during this period, cooling with LNG was continued (the LNG temperature at the inlet of the spiral pipe (9) after reaching a steady state was -150°C, and the temperature at the outlet was -50°C).
Met. ) After 10 minutes from the start of introduction of liquid carbonic acid, after confirming that the solid carbonic acid has frozen on the stopper (13), slowly lower the stopper (13),
The solid carbonic acid extruded by the internal pressure was held by the holding mechanism (15) and continuously taken out of the system at a rate of 2 to 4 mm/sec. The production amount was approximately 7 kg/hr.
得られた固形炭酸は、透明な高密度の円柱状物で、適当
な箇所で切断することにより、任意の長さの製品とする
ことが出来た。The obtained solid carbonic acid was a transparent, high-density cylindrical product, and by cutting it at an appropriate location, it could be made into a product of any length.
第１図は、本発明方法を実施するために使用する装置の
一例の概要を示す一部断面図である。
（１）・・・圧力容器
（３）・・・ポンプ
（５）・・・加圧液化炭酸ガス供給管
（７）・・・圧力計
（９）・・・冷却用蛇管
（１１）・・・ストッパー（１３）の駆動機構（１３）
・・・ストッパー
（１５）・・・固体炭酸の保持機構
（１７）・・・鏡面仕上げされた内面
（以上）FIG. 1 is a partial cross-sectional view schematically showing an example of an apparatus used to carry out the method of the present invention. (1) Pressure vessel (3) Pump (5) Pressurized liquefied carbon dioxide supply pipe (7) Pressure gauge (9) Cooling pipe (11)・Drive mechanism (13) of stopper (13)
... Stopper (15) ... Solid carbonic acid retention mechanism (17) ... Mirror-finished inner surface (and above)
Claims (2)
度で圧力容器内で加圧して液化し、液状に保持した状態
で三重点未満に冷却して固化させる固体炭酸の製造法に
おいて、ＬＮＧおよび／またはＬＰＧと熱交換した冷媒
により上記圧力容器内の液体炭酸を間接的に冷却固化さ
せ、生成した固体炭酸を連続的に容器外に取出すことを
特徴とする透明性に優れた固体炭酸の製造法。(1) In a method for producing solid carbon dioxide, in which carbon dioxide gas is pressurized and liquefied in a pressure vessel at a temperature below the critical temperature and above the triple point temperature, and then cooled to below the triple point while being maintained in a liquid state to solidify, LNG and/or the liquid carbonic acid in the pressure vessel is indirectly cooled and solidified by a refrigerant that has exchanged heat with LPG, and the generated solid carbonic acid is continuously taken out of the vessel. Manufacturing method.
ための圧力容器、加圧された液化炭酸ガスを供給するた
めに該圧力容器の一端に接続された液化炭酸ガス供給機
構、液化炭酸ガスを間接冷却するために該圧力容器の外
壁に沿って設けられた冷媒回路、および形成された固体
炭酸を保持し且つ圧力容器外に取り出すために該圧力容
器の他の一端側に設けられたストッパーを備えたことを
特徴とする固体炭酸の製造装置。(2) A pressure vessel for cooling and solidifying liquefied carbon dioxide below the triple point; a liquefied carbon dioxide supply mechanism connected to one end of the pressure vessel for supplying pressurized liquefied carbon dioxide; and liquefied carbon dioxide. A refrigerant circuit provided along the outer wall of the pressure vessel for indirect cooling of the gas, and a refrigerant circuit provided at the other end of the pressure vessel for retaining the solid carbon dioxide formed and taking it out of the pressure vessel. A solid carbonic acid production device characterized by being equipped with a stopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63152670A JPH01320213A (en) | 1988-06-21 | 1988-06-21 | Production of solid carbon dioxide having excellent transparency and device of same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63152670A JPH01320213A (en) | 1988-06-21 | 1988-06-21 | Production of solid carbon dioxide having excellent transparency and device of same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01320213A true JPH01320213A (en) | 1989-12-26 |
Family
ID=15545532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63152670A Pending JPH01320213A (en) | 1988-06-21 | 1988-06-21 | Production of solid carbon dioxide having excellent transparency and device of same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01320213A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003054929A (en) * | 2001-08-23 | 2003-02-26 | Air Water Inc | Method for producing dry ice aerosol |
| JP2008214190A (en) * | 2001-01-31 | 2008-09-18 | Mayekawa Mfg Co Ltd | Method and apparatus for preparing dry ice |
| KR100955036B1 (en) * | 2007-09-14 | 2010-04-28 | 삼성중공업 주식회사 | Cooling system for a vessel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5466395A (en) * | 1977-11-07 | 1979-05-28 | Showa Tansan Kk | Manufacture of transparent and solid carbon dioxide gas |
| JPS569208A (en) * | 1979-06-28 | 1981-01-30 | Nippon Sanso Kk | Method and apparatus for manufacturing solid dry ice |
| JPS58176113A (en) * | 1982-04-06 | 1983-10-15 | Kawasaki Heavy Ind Ltd | Preparation of solid carbon dioxide gas and liquefied carbon dioxide gas |
-
1988
- 1988-06-21 JP JP63152670A patent/JPH01320213A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5466395A (en) * | 1977-11-07 | 1979-05-28 | Showa Tansan Kk | Manufacture of transparent and solid carbon dioxide gas |
| JPS569208A (en) * | 1979-06-28 | 1981-01-30 | Nippon Sanso Kk | Method and apparatus for manufacturing solid dry ice |
| JPS58176113A (en) * | 1982-04-06 | 1983-10-15 | Kawasaki Heavy Ind Ltd | Preparation of solid carbon dioxide gas and liquefied carbon dioxide gas |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008214190A (en) * | 2001-01-31 | 2008-09-18 | Mayekawa Mfg Co Ltd | Method and apparatus for preparing dry ice |
| JP2003054929A (en) * | 2001-08-23 | 2003-02-26 | Air Water Inc | Method for producing dry ice aerosol |
| KR100955036B1 (en) * | 2007-09-14 | 2010-04-28 | 삼성중공업 주식회사 | Cooling system for a vessel |
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