公开(公告)号：US4161393A

公开(公告)日：1979-07-17

申请号：US882483

申请日：1978-03-01

Applicant: Paul Rudolph ,  Uwe D. Marwig

Inventor： Paul Rudolph ,  Uwe D. Marwig

IPC: C01B3/12 ,  C01B3/16 ,  C10J3/00

CPC classification number: C01B3/16 ,  C01B3/12

Abstract: In a process for producing a fuel gas from a solid fuel by a gasification of solid fuel under a pressure of about 15-100 bars by a treatment with steam and a gas which contains free oxygen, cooling the raw gas to a temperature of about 150.degree.-200.degree. C. and saturating it with water vapor, removing condensate which has formed so that the raw gas contains hydrocarbons having a boiling range from about 20.degree. to 400.degree. C. in an amount of about 10-100 g per standard m.sup.3 of dry gas and has a CO:H.sub.2 O volume ratio of about 0.8-2, and subjecting the raw gas to a shift conversion, the improvement which comprises dividing the raw gas into first and second partial streams in a ratio of about 1:10 to 1:1, feeding the first partial stream with a surplus of water vapor to a first shift conversion stage at an inlet temperature of about 280.degree.-450.degree. C., and passing through a second shift conversion stage a mixture of effluent gas from the first shift conversion stage and at least part of the second partial stream of raw gas at a temperature of about 300.degree.-500.degree. C., while maintaining a pressure of about 15-100 bars in the shift conversion stages. Advantageously water vapor is added to the raw gas entering the first shift conversion stage in at least about 70% of the stoichiometric amount required for shift conversion of all the carbon monoxide contained in the entire raw gas.

Abstract translation: 在通过用蒸汽和含有游离氧的气体处理的情况下通过固体燃料在约15-100巴的压力下气化生产燃料气体的方法中，将原料气体冷却至约150℃ DEG-200℃，并用水蒸汽饱和，除去形成的原料气体含有沸点范围约20-400℃的烃，其量约为10-100克/标准立方米 的干燥气体，CO:H 2的体积比为约0.8-2，对原料气体进行转化转化，其改进包括将原料气体分成第一和第二部分流，比例为约1:10至 如图1：1所示，在约280℃-450℃的入口温度下将具有多余水蒸汽的第一部分流供给到第一变换级，并且通过第二转换转化阶段来自 第一班转换阶段和至少一部分仲裁 在约300-500℃的温度下进行原料气的部分流，同时在转换转化阶段保持约15-100巴的压力。 有利的是，在进入第一转换转化阶段的原料气体中，在整个原料气体中包含的所有一氧化碳的转化转化所需的化学计量量的至少约70％中加入水蒸气。