煤制乙二醇恩德炉废水污泥压滤工艺改进

针对通辽金煤煤制乙二醇装置恩德炉系统压滤机长期运行后稳定性差、故障率高的问题,从压滤工艺、过滤元件、结构防腐等方面分析了问题产生的原因,通过加装小回流管改变入料方式、更换隔膜滤板、经试验选型滤布、防腐处理结构件等方案,提高了压滤机的运行稳定性。     

WHG干粉煤气化炉长周期运行研究

简述了五环炉工艺流程、运行情况及运行中存在的相关问题.通过对相关问题进行分析,并做出相对应的改进措施,避免了五环炉运行中的安全隐患,为气化炉装置安全稳定运行积累了宝贵经验.     

Performance evaluation of an innovative 100 kWth dual bubbling fluidized bed gasifier through two years of experimental tests: Results of the BLAZE project

In this work, the results of two years of experimental tests on an innovative dual bubbling fluidized bed gasifier are reported. These are related to the activities of the BLAZE project (Horizon 2020) for the integration of steam biomass gasification and solid oxide fuel cell. Several tests were carried out on the pilot-scale reactor at various operating conditions, and in this work the results are reported in terms of dry gas composition and yield, organic and inorganic contaminants (tar, particulate matter, H₂S). The compact design of the gasifier (a single reactor with two concentric chambers and in-situ hot gas cleaning and conditioning) reduces the heat losses and produces close to nitrogen-free syngas. Preliminary tests using a filter candle filled with conventional catalyst, installed in the freeboard of the gasifier, show that the tar content dropped to about 2 g/Nm³, and the H₂ concentration increased up to 41%_vol,dry.     

IGCC某些工作系统的设计经验

本文概要地总结了目前世界上IGCC电站中某些工作系统的设计经验及其运行参考数据,并就IGCC电站清除CO2的问题进行探讨。     

First and second law thermodynamic analysis of a single and dual-stage ignition biomass downdraft gasifier

The dual-stage ignition biomass downdraft gasifier is an enormous tar reduction technology as against a single-stage ignition biomass gasification. Exergetic analysis of the system guides toward a possible performance enhancement. In dual-stage gasification, around 67.76% of input exergy is destructed in the several components, while 9.16% is obtained as a useful exergy output and 24.34% is found to be as a useful energy output there. The entire unit was assessed with a progressively rising electric load from 15.24 kW to 38.86 kW. The enhanced producer gas quality comes from 57% combustible gas with a higher heating value of 6.524 MJ/Nm³ and tar content of 7 mg/Nm³ after the paper filter, whereas the biomass consumption rate is 58 kg/h at the greatest load with the grate temperature of 1310–1370 °C. The samples of exhaust gas emissions are obtained environmentally favorable. The results even described that the dual-stage ignition biomass downdraft gasifier has significantly greater energetic and exergetic efficiency as compared to the single-stage gasifier.