Method for evaluating strength of ashes with different residual carbon content in coal gasification

• Main Authors: HU XIAOPING, DOU YUANYUAN, LI HANXU, HUA GUIYI, TAO QUANBAO, HE JUN
• Format: Patent
• Language: Chinese; English
• Published: 01.05.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for evaluating the strength of ashes with different residual carbon content in coal gasification. The method comprises the following steps of (S1) spreading high-ash-fusion coal into a cupel evenly and feeding the cupel into a constant temperature zone of a muffle furnace; (S2) warming the cupel to 450-550 DEG C in the muffle furnace, keeping the cupel at the temperature for 20-40min, further warming the cupel to 800-830 DEG C and firing the cupel at the temperature for 40-80min; (S3) taking out the ashes, cooling the ashes in the air for 4-6min and then transferring the ashes into a dryer to cool to room temperature; (S4) adding powdered coal into the ashes and mixing the powdered coal with the ashes evenly; (S5) putting the ashes into small corundum dishes, putting a plurality of small corundum dishes on a corundum boat and then pushing the corundum boat into a tube furnace; (S6) warming and heating the corundum boat in the step (S5) in reducing atmosphere; (S7) quickly taki