Method for effecting chemical reactions between cascading solids and counterflowing gases or fluids

Abstract

Abstract A METHOD AND MEANS FOR EFFICIENTLY CHEMICALLY REACTING PARTICULATE SOLIDS AND FLUIDS SUCH AS GASES IN A CONTINUOUS COUNTERFLOWING PROCESS. THE PARTICULATE SOLID IS PASSED DOWNWARDLY IN A CASCADE THROUGH A BAFFLE PLATE STRUCTURE TO MATERIALLY INCREASE ITS RESIDENCE TIME IN THE REACTOR. THE FLUID IS FLOWED UPWARDLY THROUGH THE SAME BAFFLE STRUCTURE. DUAL CASCADE REACTORS USING PARALLEL BAFFLE STRUCTURES TO KEEP TWO DIFFERENT SOLID PARTICULATES SEPARATED WHILE YET FICILITATING FLUID PASSAGE THEREBETWEEN ARE SHOWN WHICH ARE PARTICULARLY ADVANTGEOUS, FOR INSTANCE, IN COAL DESULFURIZATION WHERE SULFUR CONTAINING COAL AND CALCIUM OXIDE PARTICULATES ARE PASED IN SEPARATE BUT PARALLEL CASCADE AND A HYDROGEN CONTANING GAS IS SUCCESSIVELY PASSED BETWEEN THE DUAL CASCADES IN A CONTINUOUS DUAL CASCADE, COUNTER-FLOWING DESULFURIZATION REACTION. THE UPWARD FLOW OF THE GAS THROUGH THE BAFFLE STRUCTURE INTERMIXES WITH THE DOWNWARD PARTICULATE FLOW SUBSTANTIALLY BETWEEN BAFFLE PLATES WHERE THE RELATIVE DIRECTIONS OF FLOW ARE DISPOSED AT A SUBSTANTIAL ANGLE TO THEREBY REDUCE THE ADVERSE EFFECTS OTHERWISE ENSUING FROM DRAG BY THE DESCENDING PARTICULATE STREAM ON THE SURROUNDING FLUID.

Inventors

• 👤 R Essenhigh

Bibliographic Details