Coalescence type filter and triethylene glycol dehydration device

By designing a filter element and guide plate structure with gradually increasing central pore size in the coalescing filter, and utilizing gravity collision and spiral channels, the problem of droplet entrainment caused by excessively high outlet flow velocity of the filter element is solved, achieving efficient natural gas dehydration and cost reduction.

CN121570909AActive Publication Date: 2026-02-27HIMILE MECHANICAL MFG +1
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Patent Information

Application Number
CN202610122352.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-29
Publication Date
2026-02-27
Estimated Expiration
2046-01-29

AI Technical Summary

Technical Problem

The existing coalescing filter cartridge has an excessively high outlet flow rate, which makes it easy for natural gas to re-entrain liquid droplets when it is discharged through the filter cartridge outlet, affecting the dehydration effect and increasing the operating cost of the triethylene glycol dehydration unit.

Method used

Design a coalescing filter with a structure of shell, baffle plate, filter element and guide plate. The central pore diameter of the filter element gradually increases from bottom to top. The guide plate is configured to guide the gas to flow radially and axially, and to form large droplets by gravity collision. Combined with the spiral channel and sealing plate design, the flow path is increased and the flow velocity is reduced.

Benefits of technology

It improves the dehydration effect of natural gas, reduces the operating cost of triethylene glycol dehydration equipment, extends the filter element life, avoids the re-entrainment of liquid droplets in natural gas, and improves filtration efficiency.

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Abstract

The invention belongs to the technical field of natural gas dehydration, and discloses a coalescence type filter and a triethylene glycol dehydration device.The coalescence type filter comprises a shell, a gas blocking plate, a filter element and a guide plate, a gas containing cavity is formed in the shell, and the shell is provided with a gas inlet and a gas outlet; the air blocking plate is arranged in the air containing cavity and divides the air containing cavity into a first cavity body and a second cavity body located above the first cavity body, the air blocking plate is provided with a communicating opening communicating the first cavity body with the second cavity body, the air inlet is communicated with the first cavity body, the air outlet is communicated with the second cavity body, and the filter element is located in the second cavity body and used for blocking water; the hole diameter of the center hole is gradually increased from bottom to top, the flow guide plate is arranged in the center hole, and the flow guide plate is used for guiding gas entering the center hole, so that part of the gas flows in the radial direction of the center hole, the rest of the gas flows in the axial direction of the center hole, and then the dehydration effect of the coalescence type filter on natural gas is improved.
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