城市垃圾焚烧发电的控制策略

主要介绍了杭州绿能环保发电有限公司城市垃圾焚烧电厂控制系统的配置以及各个系统的控制策略,着重介绍了垃圾焚烧炉的控制策略,供类似自控设计参考.     

A process simulation model for a 2 ton h−1 incinerator (a combined bed combustion and furnace heat transfer model)

A process simulation model was constructed for a 2 ton h⁻¹ incinerator. The simulation model was designed to provide system performance parameters according to various operating conditions. In accommodating the wide variation of quality and composition of input wastes, the plant operating parameters such as amount of excess air, preheated air temperature, waste feed rate and primary air distribution over the stoker, etc. must be carefully controlled. The proposed model calculates operating variables of each submodule, by employing steady-state thermal and material balance equations. Combustion of waste bed, and its radiative heat transfer in the combusion chamber are considered. The calculated results of the combustion chamber performance are evaluated, in terms of temperature, locations and width of the flame band, and mean residence time in the secondary combustion chamber. These results are compared with a limited set of field test measurements for verification of the model. © 1998 John Wiley & Sons, Ltd.     

蓄热式废气焚烧炉(RTO)在彩涂线的应用

介绍了蓄热式废气处理炉(RTO)的工作原理。RTO将蓄热式燃烧技术和废气焚烧技术完美结合,该技术在某国营大厂得到率先使用。同时介绍了一种改进型带反吹系统的2室RTO。     

危险废物焚烧炉烟气中二恶英气固相分配

研究某危险废物焚烧炉烟气中二恶英气固相分配特征.结果表明,布袋除尘器入口烟气中二恶英气固相分配如下：气相二恶英的质量分数平均为62%,固相为38%;气相的毒性当量质量分数平均为76%,固相为24%.各异构体气相质量分数（即每个异构体气相部分质量浓度占该异构体气、固相总质量浓度的百分比）随氯代数的增加而降低,即高氯代异构体更多地附着于飞灰上,低氯代异构体则更多地分布于气相中;气相质量分数的变化趋势基本与蒸汽压相符,表明蒸汽压是决定焚烧烟气中二恶英各异构体气固相分配的主要因素之一.     

Ascertaining of Optimum Pyrolysis Conditions in Producing Refuse Tea Biochar as a Soil Amendment

Refused tea is a waste product of tea processing. Manufacturing of biochar from organic waste is an emerging technology where biochar can be used as a soil amendment for environmental remediation and carbon sequestration. As such the aim of this study was to determine the optimum pyrolysis conditions in producing refuse tea biochar for the said uses. Three refused tea samples were collected randomly from the bulk from tea processing factory in Gampola area of Sri Lanka and basic physical and proximate analysis were done. Initially, refused tea was packed tightly in the pyrolytic reactor which was designed to pyrolysis refused tea and pyrolysis was carried out by using five combinations of temperature (300, 350, 400, 450, 500 ^oC) and four retention times (15 min, 30 min, 45 min and 1 hour). The physical and chemical characteristics of biochar were analysed in line with the biochar quality standards proposed by International Biochar Initiatives (IBI). Results showed that the yield of biochar varied with the residence time for a given temperature treatment. The chemical, physical and morphological properties of biochar are largely influenced by the residence time for a given temperature treatment. Temperatures between 450^oC and 500^oC, and residence time between 45 and 60 minutes showed the highest biochar mass recovery. This research revealed that refuse tea can be effectively converted to biochar between 450 to 500 oC temperatures subjected to a residence time of 45 to 60 minutes. It also showed that higher volatilization rates at optimum temperature and residence time combination can be positively used for up scaling the pyrolysis reactor.     

Performance characteristics of turbo blower in a refuse collecting system according to operation conditions

A simulator for a refuse collecting system is designed to investigate the performance characteristics of a turbo blower operating at different rotational frequencies. The simulator consists of an air intake, a waste chute, circular duct, waste collector and turbo blower. Experimental measurements and numerical simulation with three-dimensional Navier-Stokes equations have been performed to analyze the performance of the turbo blower. Throughout numerical simulation of the simulator, it is found that the input energy of the blower can be reduced by controlling the rotational frequency of impeller while the efficiency of the blower keeps constant. The required outlet pressure and flow rate of the blower can be also adjusted along the system resistance of the refuse collecting system. Detailed flow characteristics inside the blower are analyzed for different rotational frequencies. This paper was presented at the 9^th Asian International Conference on Fluid Machinery (AICFM9), Jeju, Korea, October 16–19, 2007.     

有机氟化工废物焚烧炉燃烧工艺及自动控制

介绍了有机氟化工废物焚烧炉工艺及自动控制系统,从焚烧理论出发,推导出了废液、废气及燃气与空气的燃烧比例计算方法,由此计算得到,1 kg废液和1 m3废气完全焚烧分别需要空气1.574 m3和2.370 m3。在实际使用过程中得到验证,并取得较好效果。     

500t/d逆推式炉排炉工艺设计

介绍一种新研发500 t/d逆推式炉排炉的特点以及相关工艺参数设计计算。     

苯酚丙酮装置废气焚烧炉的系统设计

从多方面分析苯酚丙酮装置的废气焚烧处理,并对该废气焚烧炉的系统设计提出策略性的方案.     

填埋气在生活垃圾焚烧炉中掺烧的研究

介绍了宁波某生活垃圾处理中心的生活垃圾卫生填埋场和千吨级垃圾焚烧厂运行实况.为了达到资源共享和减排增效,将生活垃圾卫生填埋场产生的异味填埋气引入原有的焚烧炉掺烧发电,既能对CH4一类温室气体进行彻底处理,达到减排效果,又充分利用焚烧的热量发电,增加效益.