MÉTODO PARA REDUZIR INCRUSTAÇÕES EM UM CIRCUITO DE RECICLAGEM DE ÁGUA, COMPOSIÇÃO, E, USO DA ÁGUA DE PROCESSO TRATADA

• Main Authors: FABRICE CUOQ, STEVEN LEEN, JEROME VACHON, ANDREW R. NEILSON, CARLO GEIJSELAERS, RUSSELL P WATSON, ANTHONI VAN ZIJIL
• Format: Patent
• Language: Portuguese
• Published: 02.05.2023
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CRACKING HYDROCARBON OILS; DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS; DIFFUSION TREATMENT OF METALLIC MATERIAL; FUELS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LUBRICANTS; METALLURGY; MINERAL WAXES; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Trata-se de métodos para reduzir incrustações causadas por água de processo presente no interior de um circuito de reciclagem de uma planta de pirólise. A incrustação é causada por separação de fase e acúmulo de materiais provenientes da água de processo em superfícies de equipamento. O método inclui aplicar um total de cerca de 5 ppm a 500 ppm totais de um primeiro inibidor de polimerização e um segundo inibidor de polimerização à água de processo para formar uma água de processo tratada, em que o primeiro inibidor de polimerização tem um coeficiente de partição de gasolina de pirólise-água de cerca de 0,0001 a 9 e o segundo inibidor de polimerização tem um coeficiente de partição de gasolina de pirólise-água de cerca de 1.000 a 50.000. Disclosed herein are methods for reducing fouling caused by process water present within a water recycling loop of a pyrolysis plant. Fouling is caused by phase separation and accumulation of materials from the process water on equipment surfaces. The method includes applying a total of about 5 ppm to 500 ppm total of a first polymerization inhibitor and second polymerization inhibitor to the process water to form a treated process water, wherein the first polymerization inhibitor has a pygas-water partition coefficient of about 0.0001 to 9 and the second polymerization inhibitor has a pygas-water partition coefficient of about 1000 to 50,000.