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    • 3. 发明申请
    • COMBINED USE OF CARBON DIOXIDE AND NITROGEN IN A COMPONENT OF A POWDER INJECTION SYSTEM FOR USE IN PULVERIZED COAL GASIFICATION UNDER PRESSURE
    • 二氧化碳和氮中的粉尘输入系统的一个组成部分煤尘加压气化共同使用
    • WO2008132072A3
    • 2008-12-31
    • PCT/EP2008054719
    • 2008-04-18
    • SIEMENS AGSCHINGNITZ MANFREDTIETZE GUENTER
    • SCHINGNITZ MANFREDTIETZE GUENTER
    • C10J3/50
    • C10J3/00C10J3/50C10J3/78C10J2200/15C10J2200/156C10J2300/093C10J2300/0969Y02P20/142
    • The invention relates to a powder injection system for use in pulverized coal gasification under pressure, which system comprises a reservoir (BK) for stocking the pulverized coal, a plurality of powder injection tubes (SES) and a metering unit (DG). According to the invention, carbon dioxide CO2 is fed to the components that are at operating pressure, namely the powder injection tube and the metering unit, as the inerting and flow medium or fluidizing medium. At the top of the metering unit, nitrogen is fed as the compensating gas, the nitrogen expulsed during the transfer of pulverized coal into the metering unit being fed to the powder injection tube via a pressure compensation line (DAL). The method according to the invention allows reduction of the nitrogen content in the product gas, which nitrogen is caused by the powder injection system and limitation of the problems resulting from the expansion in the powder injection tubes, especially when used in pulverized coal gasification under pressure to produce a synthesis gas for the production of different hydrocarbons.
    • 在用于在压力下煤尘气化,包括用于的煤尘储存沙坑(BK)灰尘进入系统中,一个灰尘进入水闸(SES)和计量容器(DG),是本通过操作高压部件粉末注射和计量容器采取行动作为惰性和输送介质或Fluidierungsmedium二氧化碳CO2 -zugeführt。 计量头侧供给作为补偿气体是氮气,并且其中在该剂量杯氮获取的煤尘期间移动通过压力平衡管线DAL灰尘入口锁定供给。 以有利的方式,特别是用于与生产合成气用于生产不同烃的,这降低了产品气体中的粉尘进入系统相关的氮含量,将所得在的灰尘侵入锁具问题有限松弛的目标压力下煤尘气化。