Dry desulfurization is used for city gas
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If dry desulfurization is used for city gas, what desulfurizing agent is suitable? Could you help give a shout? I am currently working on city gas projects, but I know nothing about this field at all.
Dry desulfurization using zinc oxide. . . . . . . . . . . . .
Rough removal of iron oxide, precise removal of zinc oxide
The moderator on the 3rd floor is right; it’s usually the case this way. For specific techniques, please refer to relevant books!
Should it be tower-type or box-type? The gas handling capacity is 10,000 Nm3/h. According to the information in the book, most of them are box-type
Oxide iron desulfurization is sufficient for city gas; zinc oxide is not required. City gas should contain a small amount of hydrogen sulfide so that users can detect leaks by the smell. Due to the need for frequent replacement, box-type ones are generally used. We have carried out desulfurization of city gas in multiple cities.
Reply: 1. The standard for H2S in city gas is less than 20 mg/Nm3, which is not a particularly strict requirement. 2. When the H2S content in the raw gas is not high, most gas plants use dry box-type desulfurization, with iron oxide as the desulfurizing agent and two stages of treatment to prevent the outlet parameters from exceeding limits in case of failure in the first stage. Considering factors such as cost, it is neither appropriate nor necessary to use zinc oxide as the desulfurizing agent. 3. When the H2S content in raw gas is high, in order to reduce costs, most enterprises have installed new wet desulfurization units, adopting a desulfurization process that combines wet and dry methods; more than 90% of the H2S is removed through wet desulfurization.
Thank you all! How about using a tower-type desulfurization method?
Box-type units for desulfurization systems are less costly, and iron oxide desulfurizers can fully meet the requirements of city gas
Reply to 10# Rock: Do you have any information on this topic? . Could you send it? Email: yzlxuxu@vip.qq.com