Pilot-Scale NOx Removal from Boiler Emission Using Plasma-Chemical Process

نویسندگان

  • Toshiaki Yamamoto
  • Hidekatsu Fujishima
  • Tomoyuki Kuroki
  • Masaaki Okubo
  • Keiichiro Yoshida
  • Keiichi Otsuka
چکیده

NOx removal from an actual boiler flue gas was investigated using a commercial ozonizor for indirect NO oxidation and a scrubber using Na2SO3 . The flue gas was in the range of 470~1,480 Nm/h, the gas temperature of 327C, and NOx concentration of 40 ppm. Approximately 80% of NOx removal efficiency was achieved during 180 min of system operation by maintaining pH of 8 and oxidation reduction potential of −50~0 mV and an additional Na2SO3 and NaOH solutions were injected into the scrubber to sustain the condition.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

PILOT-SCALE NOx AND SOx REMOVAL FROM BOILER EMISSION USING RADICAL INJECTION AND CHEMICAL HYBRID PROCESS

The pilot-scale NOx and SOx simultaneous removal from boiler emission was performed using radical injection and chemical hybrid process. The radical injection is often called as indirect plasma (or remote plasma) and air radicals are produced at room temperature with less than 1/10 of the flue gas flow rate. The flue gas from the boiler was in the range of 450~1,470 Nm/hr, the gas temperature o...

متن کامل

Performance Characteristics of Pilot-Scale NOx Removal from Boiler Emission Using Plasma-chemical Process

NOx removal from a smoke tube boiler flue gas was investigated using a commercial ozonizer for indirect NO oxidation and a Na2SO3 chemical scrubber. The flue gas flow rate was in the range of 410 Nm/h-1480 Nm/h, the gas temperature of 185 °C-325 °C, and NOx concentration of around 40 ppm in city gas firing. Operational and performance data were obtained. The NOx removal efficiency was clearly d...

متن کامل

Multi-objective Optimization of Coal-fired Boiler Combustion Based on NSGA-II

NOx emission characteristics and overall heat loss model for a 300MW coal-fired boiler were established by Back Propagation (BP) neural network, by which the the functional relationship between outputs (NOx emissions & overall heat loss of the boiler) and inputs (operational parameters of the boiler) of a coal-fired boiler can be predicted. A number of field test data from a full-scale operatin...

متن کامل

Effects of Flue Gas Internal Recirculation on NOx and SOx Emissions in a Co-Firing Boiler

Volumetric combustion has been developed to realize a high substitution ratio of biomass in co-firing boilers, which features an intensive flue gas internal recirculation inside furnace. However, the characteristics of NOx and SOx emissions in large-scale boilers with volumetric combustion were not fully clear. In this paper, an Aspen Plus model of volumetric combustion system was built up base...

متن کامل

Fireside Issues Associated with Coal-Biomass Cofiring

This document describes the motivations for and the effects of cofiring biomass with pulverized coal (pc) in pc-fired boilers. Such cofiring represents a near-term, low-risk, low-cost option for reducing the net CO2 emissions from the power generation sector. This document focuses on four of the critical fireside issues associated with cofiring: ash deposition, NOx production, corrosion, and ca...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008