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    • 1. 发明授权
    • Fluid bed desulfurization
    • 流化床脱硫
    • US5447702A
    • 1995-09-05
    • US206569
    • 1994-03-04
    • William M. CampbellGunnar B. Henningsen
    • William M. CampbellGunnar B. Henningsen
    • B01D53/52B01D53/83C01B17/04C01B17/50C01B17/74C10J3/46C10J3/54C10J3/56C10J3/84C10K1/30C10K1/26
    • B01D53/83B01D53/52C01B17/0408C01B17/508C01B17/74C10J3/00C10J3/54C10J3/56C10J3/84C10K1/004C10K1/026C10K1/30Y02E20/18
    • A method and apparatus for desulfurizing a gas and regenerating a sorbent is disclosed. The sulfur-containing feed gas which can be an effluent gas from a coal gasification reactor, for example, is desulfurized with a particulated metallic oxide sorbent in a transport riser. The sulfided sorbent is than separated from a desulfurized effluent gas and regenerated by contact with an oxygen-containing gas in a transport riser. The regenerated sorbent is separated from an SO.sub.2 containing offgas and recycled to the desulfurization step. The degree of sorbent conversion in the desulfurization step is held at a low level and the sorbent regeneration rate is increased to avoid excessive temperature rise in the regeneration step. In such manner, sorbent cooling can be substantially eliminated. The regeneration riser preferably comprises a once-through lift riser to minimize the riser transport gas requirements to just oxidant gas or oxidant gas mixed with a reduced amount of diluent gas. A reduction in use of diluent gas give a relatively high offgas SO.sub.2 concentration of as much as 15 mole percent, suitable for sulfuric acid manufacture and/or reduction to sulfur.
    • 公开了一种用于使气体脱硫和再生吸附剂的方法和装置。 例如,可以将来自煤气化反应器的流出气体的含硫进料气体用运输提升管中的颗粒状金属氧化物吸附剂进行脱硫。 硫化吸附剂不是从脱硫废气中分离出来的,而是通过与输送提升管中的含氧气体接触来再生。 将再生的吸附剂与含SO 2的废气分离并再循环至脱硫步骤。 脱硫步骤中的吸附剂转化度保持在低水平,并且增加吸附剂再生速率以避免再生步骤中过度的温度升高。 以这种方式,可以基本上消除吸附剂冷却。 再生提升管优选地包括一次通过的提升提升器,以使提升管输送气体的要求最小化为仅与减少量的稀释气体混合的氧化剂气体或氧化剂气体。 稀释气体的使用的减少使得相对较高的废气SO 2浓度高达15摩尔%,适用于硫酸制造和/或还原为硫。