A carbon dioxide recovery and liquefied gas recovery common system and method

By designing a shared system for C2 and LPG recovery, the problem of difficulty in recovering C2 and LPG when the ethylene plant is not in operation has been solved. This system enables efficient recovery of C2 and LPG products in one system, improving the refinery's economic benefits and energy-saving effects.

CN122344484APending Publication Date: 2026-07-07CHINA PETROLEUM & CHEMICAL CORP +1
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2025-01-06
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing technologies make it difficult to effectively recover C2 and liquefied petroleum gas products when the ethylene plant is not in operation, resulting in reduced economic benefits.

Method used

A combined system for C2 and liquefied petroleum gas (LPG) recovery was designed, including a refinery rich gas feed pipeline, a crude hydrocarbon feed pipeline, a desulfurization tower, a compressor, a heat exchanger, a gas-liquid separator, and multiple desorption towers. The system achieves the separation and recovery of C2 and LPG through a single system.

Benefits of technology

When the ethylene plant is not in operation, C2 recovery and liquefied petroleum gas production are achieved, improving the refinery's economic efficiency and realizing energy conservation, consumption reduction, and low-cost recovery processes.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122344484A_ABST
    Figure CN122344484A_ABST
Patent Text Reader

Abstract

The present application belongs to the technical field of light hydrocarbon recovery, and discloses a carbon dioxide recovery and liquefied gas recovery shared system and method. The system comprises a refinery rich gas feed pipeline, a crude hydrocarbon feed pipeline, a front desulfurization tower, a front first compressor, a front second compressor, a front heat exchanger, a desulfurization tower, a first gas-liquid separation tank, an absorption tower, a first desorption tower and a second desorption tower. The present application realizes recovery of carbon dioxide and recovery of liquefied gas products in one set of system, and realizes recovery of liquefied gas as a product when the ethylene device is not opened.
Need to check novelty before this filing date? Find Prior Art