Coke oven denitration pipe and preparation method thereof

Abstract

The invention discloses a coke oven denitration pipe and a preparation method thereof and relates to a coke oven combustion waste gas purification technology. Nitride is combined with a silicon carbide material, the material has good thermal shock resistance and erosion resistance, and the production of the ultra-long ceramic denitration pipe is realized in a threaded connection manner, so that the long-term stable operation of a coke oven denitration system is ensured; the coke oven denitration pipe comprises a denitration pipe head, a plurality of denitration pipe middle sections in the middle, a denitration tail pipe, a metal joint and nozzles, wherein the denitration pipe head, the plurality of denitration pipe middle sections in the middle and the denitration tail pipe are sequentially connected in a threaded connection manner; and at least one row of nozzles which are distributed at intervals are distributed on the whole denitration pipe.

Description

technical field

[0001] The invention relates to a coke oven combustion waste gas purification technology, in particular to a coke oven denitrification tube and a preparation method thereof. Background technique

[0002] Coke ovens will produce a large amount of combustion exhaust gas during the production process, which contains a large amount of nitrogen oxides (NO x ). The direct discharge of coke oven combustion exhaust gas has caused serious pollution to the environment. my country stipulates that from January 1, 2015, existing coking enterprises must implement the GB16171-2012 emission standard. It is equivalent to the combustion waste gas produced by the current coking enterprises must be denitrified before it can be discharged.

[0003] In the prior art, the denitrification of combustion exhaust gas is carried out at the main flue. Using this denitrification process, it is necessary to add a denitrification catalyst, and in order to overcome the resistance of the c...

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