(Abstract)
Nitrogen oxide reduction technology in waste incineration comprises mostly dry methods such as ブックメーカーjリーグ combustion control method, and selective non-catalytic reduction (SNCR) and selective catalytic reduction (SCR) methods, and it is being advanced in concurrence with ブックメーカーjリーグ reinforcement of ブックメーカーjリーグ laws and regulations including ブックメーカーjリーグ Air Pollution Control Law. Our company has developed technology which can stably remove nitrogen oxides to below ブックメーカーjリーグ emission standard value while reducing ブックメーカーjリーグ equipment cost and ブックメーカーjリーグ maintenance cost, and has made efforts to introduce it into actual plants. This article explains ブックメーカーjリーグ transition of emission regulations for waste incinerators related to nitrogen oxides, ブックメーカーjリーグ transition of nitrogen oxide reduction technology in our company, and our latest technology.
(Abstract)
ブックメーカーjリーグ “Environmental Forest Center, Kizugawa,” a waste treatment facility which was ordered by Kizugawa City, was completed in August, 2018. ブックメーカーjリーグ incineration scale of this facility is 94 t/24 h, and ブックメーカーjリーグ thermal energy from incinerating waste is recovered to cover ブックメーカーjリーグ internal power consumption through power generation with a steam turbine generator, with ブックメーカーjリーグ surplus power being sold. This article reports on ブックメーカーjリーグ features and operating conditions of this facility.
(Abstract)
In September 2018, we received an order for ブックメーカーjリーグ Suminoe Plant renewal and operation project from ブックメーカーjリーグ Osaka city Yao city Matsubara city environment facilities association. This project is one in which ブックメーカーjリーグ building stock was utilized so that ブックメーカーjリーグ internal facilities are renewed while keeping ブックメーカーjリーグ existing building. Though there was a problem in ブックメーカーjリーグ Building Standards Law in utilizing ブックメーカーjリーグ existing building, we solved it by preparing a minute renewal plan which took into consideration ブックメーカーjリーグ exemption stipulation in ブックメーカーjリーグ law. In addition, this plan was prepared so that ブックメーカーjリーグ renovation added functions and values which had not been present in ブックメーカーjリーグ existing plant, such as earthquake resistance improvement, tsunami countermeasures, and rooftop gardening.
(Abstract)
ブックメーカーjリーグ Imabari City Waste Management Center was opened in April 2018 with ブックメーカーjリーグ aim of contributing to ブックメーカーjリーグ local community as “a gathering place for local residents” during normal times and “disaster prevention base (evacuation shelter)” during disasters, not to speak of ブックメーカーjリーグ stable treatment of waste. Its feature in particular is that it implements measures to improve ブックメーカーjリーグ values of ブックメーカーjリーグ facility during both normal times and disasters in terms of hardware and software by adopting a new concept called “Phase Free” and utilizing disaster prevention efforts during normal times, and we were awarded ブックメーカーjリーグ “Grand Prix,” ブックメーカーjリーグ highest award, in ブックメーカーjリーグ “Japan Resilience Award (Resilience Grand Prize) 2019.” This article reports on ブックメーカーjリーグ “Phase Free” efforts in this facility, and ブックメーカーjリーグ disaster prevention efforts in terms of both hardware and software.
(Abstract)
ブックメーカーjリーグ step grate stoker furnace we adopt in our sewage sludge incinerating power generation system has a tendency for ブックメーカーjリーグ nitrogen oxide concentration in exhaust gas to be high, while it has ブックメーカーjリーグ advantage of lower dinitrogen oxide emissions than fluidized bed incinerators. While ブックメーカーjリーグ sludge incineration system using ブックメーカーjリーグ step grate stoker furnace we have constructed satisfy ブックメーカーjリーグ regulation values of Air Pollution Control Law, it may be necessary to introduce NOx reduction technology if a more strict regulation value is applied by ブックメーカーjリーグ local government. In order to confirm ブックメーカーjリーグ effect of reducing ブックメーカーjリーグ concentration of NOx in exhaust gas, we conducted a combustion test using a stoker combustion demonstration facility installed within our own plant and a material to be combusted (simulated dried sewage sludge) in which each component was adjusted to be equivalent to dry sludge in this study. As a consequence, we confirmed that ブックメーカーjリーグ NOx concentration in ブックメーカーjリーグ exhaust gas could be reduced from 150 ppm to 50 ppm or lower with low air-ratio combustion and exhaust gas recirculation, which are NOx emission suppression methods based on combustion control, and that ブックメーカーjリーグ N2O concentration at that time was 5 ppm or lower and ブックメーカーjリーグ emission amount approximately 0. 01 kg-N2 O/t-wet, making it possible to simultaneously reduce NOx and N2O.
(Abstract)
We adopt an indirect heating sludge dryer as one type of water content reduction technology in ブックメーカーjリーグ sludge incinerating power generation system using a step grate stoker furnace. In order for this type of dryer to perform stable sludge incinerating power generation at a treatment plant with large fluctuations in ブックメーカーjリーグ quantity or quality of dehydrated sludge or a treatment plant where ブックメーカーjリーグ sludge generation quantity and ブックメーカーjリーグ properties of sludge are expected to fluctuate as ブックメーカーjリーグ area for sludge treatment is increased, it is necessary to adjust ブックメーカーjリーグ moisture evaporation speed (amount of water evaporation per unit heat transfer area), which is ブックメーカーjリーグ treatment capacity. Based on this background, we have developed a dryer with an expanded adjustment range for quantitative and qualitative fluctuations in sludge, which is a conventional dryer with ブックメーカーjリーグ addition of a function to adjust ブックメーカーjリーグ moisture evaporation speed. We conducted a demonstration on this dryer in an actual sewage treatment plant, and confirmed that ブックメーカーjリーグ moisture evaporation speed could be adjusted within ブックメーカーjリーグ range of 70 to 130%. In addition, we conducted continuous operation for 24 hours in each season, and found that ブックメーカーjリーグ moisture evaporation speed varied depending on ブックメーカーjリーグ season and that it tended to become higher ブックメーカーjリーグ lower ブックメーカーjリーグ combustible content.
(Abstract)
In recent years, there is a growing demand for ブックメーカーjリーグ effective utilization of waste heat generated from municipal solid waste incineration plants to be increased. In order to recover ブックメーカーjリーグ waste heat from ブックメーカーjリーグ low temperature range which has not been recovered conventionally due to ブックメーカーjリーグ problem of low-temperature corrosion, our company is developing a waste heat recovery system from low-temperature gas which features a heat exchanger adopting a fluoroplastic with corrosion resistance. By adopting this system, it will be possible to recover heat from exhaust gas at ブックメーカーjリーグ outlet of ブックメーカーjリーグ bag filter, and improve ブックメーカーjリーグ power generation efficiency. We manufactured demonstration equipment of 1/3 of ブックメーカーjリーグ scale of ブックメーカーjリーグ actual facility and carried out a test on heat recovery from refuse-derived fuel combustion exhaust gas, and confirmed that ブックメーカーjリーグ actual measurement values for ブックメーカーjリーグ heat exchange performance of ブックメーカーjリーグ heat exchanger adopting fluoroplastic were equivalent to ブックメーカーjリーグ theoretical calculation values.
