Control system for apparatus to gasify fine-grain fuels in a reactor
    61.
    发明授权
    Control system for apparatus to gasify fine-grain fuels in a reactor 失效
    用于在反应器中气化细粒燃料的装置的控制系统

    公开(公告)号:US4073628A

    公开(公告)日:1978-02-14

    申请号:US746245

    申请日:1976-12-01

    摘要: Fine-grain fuel is delivered from pressure vessels with a vehicle gas as a fluidized flow into a reactor for gasification at an elevated pressure. A gaseous gasification agent is also fed into the reactor. A control system for the fine-grain fuel and gasification agent includes detectors to provide an electrical signal which varies during feeding of fuel from the pressure vessels into the reactor. Controllers produce a fuel rate control signal corresponding to a comparison between the electrical signal from the detectors and a predetermined reference value corresponding to the desired fuel supply rate. Control valves respond to the fuel rate control signal to adjust the supply of vehicle gas to transfer fuel from the pressure vessels into the reactor. When a plurality of pressure vessels is used, then separate detectors, controllers and control valves form part of a control system which further includes computing means to provide a summation signal corresponding to the output signals from the various detectors. The summation signal is used by the various controllers for adjusting the control valves associated with each pressure vessel. A further controller produces a gasification agent control signal in response to a comparison between the summation signal and a predetermined reference value corresponding to a desired supply rate of gasification agent into the reactor. A control valve is operated in response to the gasification agent control signal. The control system further includes a gas analyzer responsive to the gaseous product from the reactor to monitor the supply of gasification agent into the reactor and adjust the supply thereof to the reactor.

    摘要翻译: 细粒燃料从压力容器输送,车辆气体作为流化流进入反应器,以在升高的压力下气化。 还将气态气化剂进料到反应器中。 用于细粒燃料和气化剂的控制系统包括检测器,用于提供在从压力容器进入反应器的燃料供给期间变化的电信号。 控制器产生对应于来自检测器的电信号与对应于期望燃料供应速率的预定参考值之间的比较的燃料速率控制信号。 控制阀响应于燃料速率控制信号以调节车辆气体的供应以将燃料从压力容器传送到反应器中。 当使用多个压力容器时,分离的检测器,控制器和控制阀构成控制系统的一部分,该控制系统还包括计算装置,以提供对应于来自各种检测器的输出信号的求和信号。 求和信号由各种控制器用于调节与每个压力容器相关联的控制阀。 响应于加和信号与对应于进入反应器的气化剂的期望供应速率的预定参考值之间的比较,另一个控制器产生气化剂控制信号。 响应于气化剂控制信号操作控制阀。 控制系统还包括气体分析仪,其响应来自反应器的气态产物,以监测气化剂供应到反应器中并调节其供应到反应器。

    FEED LOCATION FOR GASIFICATION OF PLASTICS AND SOLID FOSSIL FUELS

    公开(公告)号:US20220169933A1

    公开(公告)日:2022-06-02

    申请号:US17651185

    申请日:2022-02-15

    摘要: Pre-ground plastics of small particle size not more than 2 mm are co-fed into a solid fossil fuel fed entrained flow partial oxidation gasifier. A syngas composition can be made by charging an oxidant and a feedstock composition comprising recycle plastics and a solid fossil fuel to a gasification zone within a gasifier; gasifying the feedstock composition together with the oxidant in said gasification zone to produce said syngas composition; and discharging at least a portion of said syngas composition from said gasifier; wherein the recycled plastics are added to a feed point comprising a solid fossil fuel belt feeding a grinder after the solid fossil fuel is loaded on the belt, a solid fossil fuel belt feeding a grinder before the solid fossil fuel is loaded onto the belt, or a solid fossil fuel slurry storage tank containing a slurry of said solid fossil fuel ground to a size as the size fed to the gasification zone.

    All-steam gasification for supercritical CO2 cycle system

    公开(公告)号:US11193073B2

    公开(公告)日:2021-12-07

    申请号:US16746484

    申请日:2020-01-17

    摘要: A carbonaceous fuel gasification system for a supercritical CO2 power cycle system includes a micronized char preparation system comprising a devolatilizer that receives solid carbonaceous fuel, hydrogen, oxygen, and fluidizing steam and produces micronized char, steam, hydrogen, and volatiles. An indirect gasifier includes a vessel comprising a gasification chamber that receives the micronized char, a conveying gas, and steam where the gasification chamber provides syngas, ash, and steam. A combustion chamber receives syngas and an oxidant and burns the mixture of syngas with the oxidant to provide heat for gasification and for heating incoming flows, thereby generating steam and CO2. The heat for gasification is transferred from the combustion chamber to the gasification chamber by circulating refractory sand. A syngas cooler cools the syngas and generates steam and provides to a supercritical CO2 power cycle system that performs a supercritical CO2 power cycle for generating power.