초록 ▼

Contaminants, such as water and hydrogen sulfide, are removed from hydrocarbon streams by the use of beds of solid adsorbents including molecular sieves. The adsorbents are regenerated by heating, with the heating being performed in a closed-loop operation wherein a small quantity of the hydrocarbon

Contaminants, such as water and hydrogen sulfide, are removed from hydrocarbon streams by the use of beds of solid adsorbents including molecular sieves. The adsorbents are regenerated by heating, with the heating being performed in a closed-loop operation wherein a small quantity of the hydrocarbon being treated is recycled in a closed-loop recirculation system comprising the adsorbent and a heater until the adsorbent reaches an effective regeneration temperature. Closed-loop operation is then terminated, and a regeneration gas is passed into the system and the adsorbent on a once-through basis.

대표청구항 ▼

A process for removing a preselected chemical compound from a fluid stream by the use of a bed of a solid adsorbent which comprises the steps of: a. passing a feed stream comprising a hydrocarbon and a chemical compound different than the hydrocarbon through a first bed of adsorbent material at cond

A process for removing a preselected chemical compound from a fluid stream by the use of a bed of a solid adsorbent which comprises the steps of: a. passing a feed stream comprising a hydrocarbon and a chemical compound different than the hydrocarbon through a first bed of adsorbent material at conditions effective to cause the removal of the chemical compound from the feed stream by adsorption, including a preselected adsorption temperature; b. switching the passage of the feed stream from through the first bed of adsorbent material to through a second bed of adsorbent material; c. heating the first bed of adsorbent material by continuously recirculating a fixed quantity of a heating fluid which comprises a hydrocarbon contained in the feed stream through the first bed of adsorbent material in a closed-loop recirculation system comprising a heating means and the first bed of adsorbent material while heat is being added to the heating fluid by the heating means; d. terminating the closed-loop recirculation of the heating fluid when the first bed of adsorbent material reaches a preselected regeneration temperature; e. passing a stream of regeneration fluid through the heating means and the first bed of adsorbent material at conditions effective to cause the transfer of the chemical compound from the first bed of adsorbent material to the stream of regeneration fluid and thereby forming a stream rich in the chemical compouNd and which is removed as an effluent stream; and, f. terminating the removal of the effluent stream when substantially all of the chemical compound has been removed from the first bed of adsorbent material.