Importance

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Abstract

A process for separating a gas and a vapor is disclosed. A cross-flow horizontal spray vessel comprising horizontally-situated sections is provided. Each of the sections comprise a spray nozzle or nozzles, and a collection hopper. A carrier gas, comprising a product vapor, is passed through the sections. A contact liquid is provided through the spray nozzle or nozzles such that the carrier gas passes across the contact liquid and a portion of the product vapor desublimates, condenses, crystallizes, or combinations thereof as a product solid into the contact liquid, leaving a product-depleted carrier gas. The contact liquid and the product solid are passed to a next preceding upstream spray nozzle or nozzles such that a temperature profile is established across the sections by the contact liquids, as the contact liquids are progressively warmer. The contact liquid and the product solid are removed. The product-depleted carrier gas is removed.

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First Claim