Load regulation method and system of high-pressure polyethylene device
A high-pressure polyethylene and load adjustment technology, which is applied in the field of polyolefin production, can solve problems such as upstream and downstream material imbalance, narrow load adjustment range, and low production efficiency, so as to avoid material imbalance, improve production efficiency, and reduce production costs.
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[0067] According to a specific embodiment of the present invention, the load processing unit 3 includes:
[0068] The reaction pressure adjustment unit 30 is used to adjust the inlet pressure of the compressor to 26-30MPa to increase the polymerization load when the inlet temperature of the compressor is kept constant;
[0069] And / or, the initial temperature adjustment unit 31 is used to adjust the temperature of the reaction material after preheating to 160-165° C. to increase the load of the polymerization reaction;
[0070] And / or, the peak temperature adjustment unit 32 is used to adjust the reaction peak temperature 304-308°C inside the reactor to increase the polymerization reaction load;
[0071] And / or, the heat exchange medium adjustment unit 33 is used to control the temperature difference of the heat exchange medium at the inlet and outlet of the reactor to 10-15° C. to increase the load of the polymerization reaction.
[0072] According to another specific embodi...
Embodiment 1
[0083] The difference from Comparative Example 1 is that the inlet temperature of the compressor is kept constant, and the inlet pressure of the compressor is adjusted to 26-30MPa, preferably 28MPa, so that compared with the original design condition, the inlet pressure of the compressor is increased by 3MPa, and the delivery The amount of ethylene gas in the reactor increases by 1 ton / hour, so the density of ethylene delivered to the polyethylene reactor increases, the conversion rate of ethylene increases, and the final polyethylene output reaches 40.8 tons / hour. The polymerization reaction of the high-pressure polyethylene device The load is increased to 100.7% of the original design load.
Embodiment 2
[0085] The difference from Comparative Example 1 is that the peak reaction temperature inside the reactor is adjusted to be 304-308°C, preferably 307°C. Since the heat released when the polymerization reaction reaches equilibrium increases, the conversion rate of ethylene increases, and the final output of polyethylene reaches 41.7 tons per hour, the polymerization load of the high-pressure polyethylene unit increased to 103% of the original design load.
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