초록 ▼

An apparatus and method are provided for deaerating liquid crystal contained in at least one liquid crystal container. The apparatus includes a chamber, a holder, a displacement mechanism, a vacuum system and a gas supply. The chamber has an opening to provide access to an interior of the chamber an

An apparatus and method are provided for deaerating liquid crystal contained in at least one liquid crystal container. The apparatus includes a chamber, a holder, a displacement mechanism, a vacuum system and a gas supply. The chamber has an opening to provide access to an interior of the chamber and a cover to seal the opening. The holder is disposed in the chamber to hold the liquid crystal container having the liquid crystal while the displacement mechanism displaces the at least one container. Here, the vacuum system creates a vacuum state in the chamber during deaeration, and the gas supply restores the chamber to atmospheric pressure.

대표청구항 ▼

An apparatus and method are provided for deaerating liquid crystal contained in at least one liquid crystal container. The apparatus includes a chamber, a holder, a displacement mechanism, a vacuum system and a gas supply. The chamber has an opening to provide access to an interior of the chamber an

An apparatus and method are provided for deaerating liquid crystal contained in at least one liquid crystal container. The apparatus includes a chamber, a holder, a displacement mechanism, a vacuum system and a gas supply. The chamber has an opening to provide access to an interior of the chamber and a cover to seal the opening. The holder is disposed in the chamber to hold the liquid crystal container having the liquid crystal while the displacement mechanism displaces the at least one container. Here, the vacuum system creates a vacuum state in the chamber during deaeration, and the gas supply restores the chamber to atmospheric pressure. separating the heavy key component of claim 1 wherein the absorber of step (e) has at least one vertically spaced tray, one or more packed beds, any other type of mass transfer device, or a combination thereof. 9. The process for separating the heavy key component of claim 1 wherein the fractionation column of step (c) has at least one vertically spaced tray, one or more packed beds, any other type of mass transfer device, or a combination thereof. 10. The process for separating the heavy key component of claim 1, wherein the heavy key component is C3compounds and heavier compounds and further comprises the following steps: (a) at least partially condensing the fractionation overhead vapor stream to produce a condensed fractionation overhead stream; (b) separating the condensed fractionation overhead stream to produce a second vapor stream and a fractionation reflux stream; (c) supplying the fractionation column with the fractionation reflux stream; (d) cooling the fractionation bottom stream and supplying a portion of the fractionation bottom stream to the fractionation column as a fractionation reflux stream; (e) condensing at least a portion of the first liquid stream before producing the first fractionation column stream from step (b); and whereby the fractionation bottom stream contains the majority of the heavy key component and heavier compounds. 11. The process for separating the heavy key component of claim 10 further comprising the following steps: (a) heating at least a remaining portion of the first liquid stream producing a third fractionation feed stream; and (b) supplying the third fractionation feed stream to the fractionation tower or to the first fractionation feed stream. 12. The process for separating C3compounds and heavier compounds of claim 10 further comprising the following steps: (a) expanding the absorber bottom stream; (b) at least partially condensing the absorber bottom stream to form a condensed absorber bottom stream; (c) separating the condensed absorber bottom stream into a separated vapor stream and a separated liquid stream where the first separated liquid stream is 0% to 100% of the separated liquid stream; (d) separating the separated liquid stream into a first separated liquid stream and a second separated liquid stream; (e) supplying the second separated liquid stream to the fractionation column; (f) combining the first separated liquid stream with the separated vapor stream to form the second fractionation feed stream; (g) heating the second fractionation feed stream; and (h) supplying the second fractionation feed stream to the fractionation column. 13. The process for separating the heavy key component of claim 10 wherein the heavy key component is C3compounds and heavier compounds and the condensing of step (g) from claim 1 occurs by heat exchange contact with one or more process streams selected from the group consisting of the absorber bottom stream, the absorber overhead stream, at least a portion of the first liquid stream and combinations thereof. 14. The process of separating the heavy key component of claim 10 wherein the heavy key component is C3compounds and heavier compounds and the first fractionation feed stream and the second fractionation feed stream supplied to the fractionation column are cooled by an heat exchange contact with process streams selected from the group consisting of the absorber overhead stream, inlet gas stream, the compressed second vapor stream, fractionation overhead vapor stream, and combinations thereof. 15. The process of separating the heavy key component of claim 14 wherein the heavy key component is C3compounds and heavier compounds and the heat exchange contact occurs in an apparatus selected from the group consisting of a heat exchanger and a condenser. 16. The process of separating the heavy key component of claim 10 wherein the heavy key component is C3