Method and device for removing micro-phase alkaline matter in fluid

Abstract

The invention relates to a method and a device for removing microphase alkaline matter in a fluid, and provides a method for removing the microphase alkaline matter in the fluid. The method comprises the following steps: (a) performing first mini-hydrocyclone separation on the fluid containing the microphase alkaline matter to remove scattered impurity in the fluid; (b) mixing fogdrop of extracted medium in a dispersing mode with the fluid without the scattered impurity obtained in the step (a) to transfer the microphase alkaline matter in the fluid dissolving in the extracted medium to the dispersing fogdrop of the extracted medium so as to extract the microphase alkaline matter in the fluid; and (c) performing the second mini-hydrocyclone separation on the mixture of the dispersing extracted medium containing the microphase alkaline matter and the fluid extracted by the microphase alkaline matter to separate the dispersing extracted medium from the fluid. The invention also provides a device for removing the microphase alkaline matter in the fluid.

Description

technical field [0001] The invention relates to a method for removing dispersed impurities in raw materials, microphase small molecule amines, sodium and other alkaline substances, more specifically, relates to a method for coupling extraction microcyclones to remove microphase alkaline substances in fluids and devices. Background technique [0002] Methyl tert-butyl ether (MTBE for short) is the most ideal high-octane gasoline additive. It is called "the third generation of petrochemicals". Chemicals. Gasoline containing 10% methyl tert-butyl ether can reduce fuel consumption by 7%, reduce production costs by about 20%, and reduce vehicle exhaust pollutant emissions. MTBE adopts a mixed-phase bed-catalytic distillation combination process, methanol accounted for 35% of the production raw materials, isobutylene accounted for 65%. [0003] In the C4, C5 and gasoline etherification devices in the petrochemical industry, the C4 alkanes and C5 alkanes from the gas fractionati...

AI Technical Summary

Problems solved by technology

Most importantly, neither sedimentation separation nor coalescence separation can solve the lye release and lye recovery when the raw material entrains a large amount of foamy solvent under the condition of amine liquid foaming

Secondly, the resources consumed by several schemes are relatively large, and it is difficult to ensure the long-term operation of the device

The equipment required for simple sedimentation separation is large in size and occupies a relatively large area, which is difficult to be used for the transformation of a device with a compact layout. The coalescing filter element itself is relatively expensive and has a limited lifespan, so the operating cycle is short and the post-operation period is short. The effect is poor, two sets must be installed, cleaned and replaced regularly; the operating cost of the water washing system solution itself is relatively high, and the applicability is limited

[0010] In short, due to the shortcomings of the existing technology, the problems of C4 dealkalization, dry gas, and low-separation gas dealkalization have not been solved so far, and it is far from meeting the expectations of long-term operation of catalysts in MTBE units and gasoline etherification units.

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