|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B01J-038/34 B01J-038/16 B01J-023/92 C01B-017/00|
|미국특허분류(USC)||502/43 ; 423/230 ; 423/231 ; 423/24401|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 3 인용 특허 : 0|
The regeneration of sulfur sorbents having sulfate forming tendencies and used for desulfurizing hot product gas streams such as provided by coal gasification is provided by employing a two-stage regeneration method. Air containing a sub-stoichiometric quantity of oxygen is used in the first stage for substantially fully regenerating the sorbent without sulfate formation and then regeneration of the resulting partially regenerated sorbent is completed in the second stage with air containing a quantity of oxygen slightly greater than the stoichiometric am...
A method for regenerating hot-gas desulfurization sorbents with sulfating tendencies to minimize the concentration of sulfates in the regenerated sorbent, comprising the steps of partially regenerating a bed of particulate sorbent containing sulfur species substantially formed of sulfides in a first region of a sorbent regenerator by contacting the bed of particulate sorbent at an elevated temperature with a first stream of oxygen-containing gases at a sufficient volume and velocity for fluidizing the bed of particulate sorbent in said first region and f...