643results about How to "The process is simple and reliable" patented technology

The invention relates to a microwave plasma biomass gasification fixed-bed gasification furnace and a process, comprising a vertically arranged furnace body; a gasification furnace clearance zone is arranged at the upper part of the furnace body; a fixed bed is arranged at the lowest part of the furnace body; an raw material and fuel inlet, a product gas outlet and an oxygen / steam inlet are arranged on the furnace body; a slag notch is arranged at the bottom of the furnace body, and a synthesis gas monitoring unit is arranged at the position of the product gas outlet. The gasification furnace and the process are characterized in that: at least one microwave plasma generating device is arranged on the furnace body, the characteristics of high dispersion degree and high ionization of microwave plasma are adopted to achieve high-efficiency conversion of biomass fuel chemical energy in the furnace. The cold gas efficiency can be significantly higher than that of the conventional biomass gasification process and can reach more than 85%. Non-equilibrium cleavage reaction is carried out to tar and the like in synthesis gas, so that tar content is very low, direct industrialization utilization can be achieved, and the follow-up process is simple and reliable. No special requirements on the fuel particle size are demanded, simple breaking operation is only needed without complex processing, and the economy is good.

The invention relates to a process and a system for sorting coal by discharging coal gangue through a dry method, which are suitable for sorting the coal for quality improvement in water shortage places. The coal sorting process comprises a particle size classification step and a plus sieve raw coal sorting step. In the process, a particle size range which is suitable for markets is obtained by particle size classification, the obtained raw coal is sorted by a sensor, and coal briquettes with more impurities are blown into an impurity chamber through high-speed compressed air, so that the sorting accuracy and efficiency are improved. The coal sorting system comprises a dry screening machine, a plus sieve raw coal conveying chute, a sensor system, a control system, a spray nozzle and a flow split chamber, wherein the tail end of the dry screening machine is connected with the feeding end of the plus sieve raw coal conveying chute; the sensor system and the discharging end of the plus sieve raw coal conveying chute are arranged corresponding to each other; the flow split chamber is arranged below the plus sieve raw coal conveying chute; and the spray nozzle controlled by the controlsystem is arranged between the discharging end of the plus sieve raw coal conveying chute and the flow split chamber. The system has a compact structure and a small floor area.