![]() ![]() However, in the 930 patent the pressures are lower and there is a phase separation of the solution into a continuous polymer rich phase and a dispersed polymer poor phase. Another way of addressing wall deposits is to fabricate the tube with smooth, unpolished internal surfaces." Similar techniques are used in high pressure reactor systems to clear for example fouled heat exchanges as disclosed in NOVA Chemicals (International) S.A. The shockwave helps dislodge any polymer residue that has formed on reactor walls during operation. ![]() Given the warning above it is imperative to either not impair the cooling capacity or to quickly restore the H:\Trevor\TTSpec\2010039Canada.docx "Tubular reactors have a special outlet valve that can send a pressure shockwave backward along the tube. The patent sets forth four conditions that must be heat transfer from the reaction to the cooling jacket is impaired. Preferably the BACKGROUND OF THE INVENTION United States Patent 2,153,553 issued Apdiscloses the high pressure polymerization of ethylene. REDUCTION OF FOULING IN HIGH PRESSURE REACTORS FIELD OF THE INVENTION The present invention relates to the field of high pressure polymerization of alpha olefins, and particularly ethylene and co- and homo- polymers thereof. Y02P20/54- Improvements relating to the production of bulk chemicals using solvents, e.g.Y02P20/50- Improvements relating to the production of bulk chemicals.Y02P20/00- Technologies relating to chemical industry.Y02P- CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS. ![]() Y02- TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE.Y- GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS AND DIGESTS.G16C20/10- Analysis or design of chemical reactions, syntheses or processes.ICT specially adapted for the handling of physicochemical or structural data of chemical particles, elements, compounds or mixtures G16C- COMPUTATIONAL CHEMISTRY CHEMOINFORMATICS COMPUTATIONAL MATERIALS SCIENCE.G16- INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS.C08F2/002- Scale prevention in a polymerisation reactor or its auxiliary parts.C08F110/00- Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond.C08F10/00- Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond.C08F2/01- Processes of polymerisation characterised by special features of the polymerisation apparatus used.C08F- MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS.C08- ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP COMPOSITIONS BASED THEREON.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Nova Chemicals Corp filed Critical Nova Chemicals Corp Priority to CA2798036A priority Critical patent/CA2798036C/en Priority to PCT/CA2013/000930 priority patent/WO2014085902A1/en Priority to US14/078,576 priority patent/US9202014B2/en Publication of CA2798036A1 publication Critical patent/CA2798036A1/en Priority to US14/881,196 priority patent/US20160068617A1/en Priority to US14/924,952 priority patent/US9499645B2/en Priority to US15/291,363 priority patent/US9663591B2/en Application granted granted Critical Publication of CA2798036C publication Critical patent/CA2798036C/en Status Active legal-status Critical Current Anticipated expiration legal-status Critical Links Original Assignee Nova Chemicals Corp Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor William Joseph Tchir Eric Cheluget Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number CA2798036A Other languages French ( fr) Google Patents Reduction of fouling in high pressure reactorsÄownload PDF Info Publication number CA2798036A1 CA2798036A1 CA2798036A CA2798036A CA2798036A1 CA 2798036 A1 CA2798036 A1 CA 2798036A1 CA 2798036 A CA2798036 A CA 2798036A CA 2798036 A CA2798036 A CA 2798036A CA 2798036 A1 CA2798036 A1 CA 2798036A1 Authority CA Canada Prior art keywords liquid polymer ethylene mpa reactor Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents CA2798036A1 - Reduction of fouling in high pressure reactors CA2798036A1 - Reduction of fouling in high pressure reactors ![]()
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