Slurry transfer method, polyolefin production method and utilization thereof

Abstract

The present invention realizes a slurry transfer method capable of stably operating a plunger pump that supplies slurry at high pressure for a long period of time. A method for transferring slurry, wherein a transfer pump equipped with a ball check valve is operated under the conditions satisfying the following formula (1) to transfer the slurry containing particles and liquid, 7.8×10 3 <P≤5.0×10 5 (1). Here, P=W(ρ 1 / (ρ b -ρ 1 )) 0.5 / (C d(d+R)R 0.5 ), in formula (1), W represents the particle flow rate (kg / hr) in the slurry passing through the ball check valve, and C represents the particle concentration (kg / m 3 ), d represents the maximum particle diameter (m) of the particles in the slurry, R represents the ball diameter (m) of the one-way valve, ρ 1 Indicates the density of the liquid (kg / m 3 ), ρ b Indicates the density of the ball of the check valve (kg / m 3 ).

Description

technical field

[0001] The present invention relates to a method for transferring slurry, a method for producing polyolefin, and its utilization. Background technique

[0002] The transfer of the slurry can be widely used in industrial fields such as the chemical industry for a process that requires supply of a slurry containing solid particles.

[0003] For example, Patent Documents 1 and 2 describe a method of preventing stagnation and accumulation of coarse particles in a check valve by setting the gap between the ball of the check valve and the guide rail to be greater than or equal to a certain size.

[0004] prior art literature

[0005] patent documents

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 6-017942 (published on January 25, 1994)

[0007] Patent Document 2: International Publication No. 2012 / 013800 (published on February 2, 2012) Contents of the invention

[0008] The problem to be solved by the invention

[0009] However, in th...

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