To study the effects of operational parameters on gasifying characteristics in the jet-fluidized-bed reactor and illustrate the scaling relationships of jet-fluidized-bed coal gasifier in a scale-up process, we established an equivalent reactor network model for the gasifier using CHEMKIN 4.1 software. The model is based on hydrodynamic properties in the gasifier and knowledge of the burning zone and gasifying zone of the reactor. It involves two-phase flow between materials, heat and mass transfer, as well as the coal gasification process in the presence of mixed gases, most notably H 2 O, O 2 , N 2 , etc. The model was validated by comparing it to the experimental data of outlet gas compositions. To optimize characteristics of the jet-fluidized-bed coal gasifier, the influence of the oxygen feed rate into the center nozzle and the coal feed rate on the gasification process and gas composition were studied by the equivalent established reactor network. Within the calculation range, with the increase of the oxygen feed rate into the center nozzle, the jet region nearly doubled, the temperature increased by 306 K, carbon conversion efficiency rose from 68 to 97%; however, the temperature of the jetting region should be controlled within the coal ash-softening temperature, and in generated gases, the CO and H 2 contents had clearly changed. With the increase of the coal processing capacity, the jet region temperature decreased by 252 K, the gasifier overall temperature decreased, and carbon conversion reduced from 98 to 74%.

Amorphous IGZO TFT arrays have been developed as backplanes for 17ç17 inch flat panel X‐ray detector. A sacrificial barrier layer (SBL) is introduced to protect the a‐IGZO channel from H plasma atmosphere, which can effectively solve the problem of negative threshold voltage (Vth) shift and/or even TFT continuously turn‐on.

With the gradual construction of the land and space planning system and the acceleration of the urban-rural integrated development process, China’s rural land planning and preparation have ushered in substantial innovations, and at the same time, they are also facing huge challenges. Among them, the low utilization rate of rural land and cultural desertification are the crux of the lagging rural development. This paper takes Guifengshan Village in Macheng City, Hubei Province as an example. Through the analysis of the current advantages of the village, the analysis of challenges, and the evaluation of the suitability of land use, this paper proposes to promote the mutual benefit of agriculture, culture and tourism, and promote the revitalization of Guifengshan Village, forming a “agricultural industry + characteristic cultural creation + red ecology”. “Tourism” jointly develops rural planning strategies. It aims to link rural agriculture, tourism and cultural industries closely on the basis of people-oriented and ecological protection, with income generation as the goal of rural revitalization, to achieve the establishment and extension of the industrial chain, and to promote rural revitalization.