| 摘要 |
A process and system for cooling syngas provides effective syngas cooling and results in reduced levels of fouling in syngas cooling equipment is disclosed. A process for cooling syngas includes blending syngas with cooled recycled syngas in an amount effective for providing a blended syngas with a temperature at an inlet of a syngas cooler of about 600°F to about 1400°F. The blended syngas changes direction of flow at least once prior to the inlet of the syngas cooler. As shown in the figure, the gas mixing system includes a gasification chamber (100). A syngas recycle inlet (300) enters a distal end or exit section of the gasification chamber (200). In this aspect, the syngas recycle inlet enters the distal end of the gasification chamber tangentially at an outer circumference. Hot syngas leaving the gasifier contacts recycled cooled syngas through the syngas recycle inlet after the hot syngas leaves the gasifier and before the blended syngas enters a syngas cooler (not shown) through a gasification outlet (400). The gasification outlet may be a conduit or pipe. In this aspect, “recycled cooled syngas” refers to a syngas that has been cooled in a syngas cooler to a temperature of about 350°F to about 450°F. |
