英语翻译气相催化氧化-碱液吸收法处理NOx工业废气工艺系统初步设计摘 要\x05\x05\x05\x05\x05\x05

The gas phase catalytic oxidation - the alkali absorption method to handle NOx industrial emissionsPreliminary design of process systemsAbstractNitrogen oxides (NOx) cause great harm to the ecological environment and human health, one has become an important research topic for the field of environment。 [14] The denitration method commonly used in industrial emissions containing NOx absorption method, oxidation - absorption and adsorption。 The design for the pharmaceutical factory emissions including NOx exhaust gas oxidation, the emission characteristics of normal temperature and pressure, using a vapor phase catalytic oxidation - alkali absorption process design。The design process include: the exhaust of NOx in addition to water and oxidation, two absorber to absorb NOx emissions, byproducts of separation purification of NaNO2 and NaNO3 the separation and purification of three parts。 The selection of activated carbon oxidation which, in addition to water adsorbent, catalyst selection of ZSM-5 zeolite, the absorber tower, absorption solution using NaOH solution。Results: After two absorber absorption treatment, the final NOx concentration of export emissions 0。14mg/m3 emission flow rate of 1。256kg / h, less than the national NOx emission standard (GB16297-1996): the concentration of ≤ 0。15mg/m3 40m row The pump flow rate ≤ 4。4kg / h。 Absorption of liquid by simple treatment with a certain economic value byproduct NaNO2380。1t / a, and NaNO3423。7t / a。 (Yield) of total operating costs of 2。5553 million yuan / year, by-product benefits of 2。1658 million yuan / year, the actual operating costs 389,500 yuan。 如何