Method for preparing composite waste plastic powder suitable for coal water slurry by using graded inert filler

• Main Authors: SHAN GUOCHANG, BEI JUNJIE, WANG HAOXIANG, LIANG HUA, WU TONGHE, LIU QI, LIU JING
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2022
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; CRUSHING, PULVERISING, OR DISINTEGRATING; CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; MAKING GRANULES OR PREFORMS; METALLURGY; MILLING GRAIN; NATURAL GAS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; PREPARATORY TREATMENT OF GRAIN FOR MILLING; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention discloses a method for preparing composite waste plastic powder suitable for coal water slurry by using graded inert filler. According to different glass transition temperatures of different plastics, waste polyethylene packaging barrels, waste polypropylene packaging bags and waste polyester packaging bottles are crushed and then added into an internal mixer, the mixture is heated to 150-180 DEG C to form a fluid, inert fillers such as calcium carbonate and magnesium carbonate are added, the fluid is uniformly mixed and stirred, the mixed materials are cooled to the room temperature, the materials are crushed by a crusher, and the crushed materials are discharged from the internal mixer. And grinding into particles meeting the particle size requirement of the coal water slurry by a mill, and mixing with coal to prepare the coal water slurry. The method can be used for effectively treating the waste plastic, preparing the waste plastic into brittle plastic powder, mixing the brittle plastic powd