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Hydrate decomposer, mixed gas separation system and separation method

A hydrate decomposition and separation system technology, which is applied in the field of hydrate decomposers and the separation of mixed gas using hydrate technology, can solve the problems of poor fluidity and high energy consumption for hydrate decomposition, and achieves reduced energy consumption, moderate operating pressure, and operating conditions. mild effect

Active Publication Date: 2021-06-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of poor fluidity and high energy consumption of hydrate decomposition in the existing hydrate method for separating mixed gas technology, the present invention provides a hydrate decomposer, a mixed gas separation system and a separation method, which can ensure good fluidity of hydrate and ensure The continuous, large-scale, and long-term stable operation of the separation device greatly reduces the problems of hydrate decomposition and cooling energy consumption caused by maintaining hydrate fluidity

Method used

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  • Hydrate decomposer, mixed gas separation system and separation method
  • Hydrate decomposer, mixed gas separation system and separation method

Examples

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Embodiment 1

[0056] Select the hydrate decomposer provided by the present invention, adopt figure 2 The process flow shown is to separate the coalbed methane, and the CH in the coalbed methane 4 The volume content is about 40%, and the rest is N 2and O 2 Wait for gas. After the coalbed methane 21 is pressurized to 0.4Mpa by the compressor 22, it enters the hydrate reactor 24 for hydration reaction with the hydrate working fluid. The aqueous solution with a molar concentration of 6% THF and 300ppm SDS, the amount of hydrate generated by the reaction control accounted for about 60% of the total volume of the hydrate slurry, and the mixed gas was discharged from the hydration reactor after the CH in the gas 25 4 The content is less than 5%, which meets the safety emission requirements (CH 4 The explosion limit is 5% to 15%); the hydrate slurry 26 is sent to the hydrate decomposer 27, the condition of the hydrate decomposer 27 is a pressure of 0.1Mpa, and the hydrate slurry 26 is divided ...

Embodiment 2

[0060] Select the hydrate decomposer provided by the present invention, adopt figure 2 The process shown in the biogas separation treatment, CH in the biogas 4 The volume content is about 60%, and the rest is CO 2 The main impurity gas. After the biogas 21 is pressurized to 0.4Mpa by the compressor 22, it enters the hydrate reactor 24 for hydration reaction with the hydrate working fluid. For an aqueous solution with a fraction of 4% CP and a mole fraction of 0.3% TBAB, the amount of hydrate generated by the reaction control accounted for about 65% of the total volume of the hydrate slurry. After the mixed gas was treated, it was discharged from the hydration reactor. 4 The content is about 90%; the hydrate slurry 26 is sent to the hydrate decomposer 27, and the condition of the hydrate decomposer 27 is a pressure of 0.8Mpa, and the hydrate slurry 26 is divided into hydrate-rich hydrates accounting for 74% of the total slurry in the slurry separation unit Phase and 26% of ...

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Abstract

The invention discloses a hydrate decomposer, a mixed gas separation system and a separation method. The hydrate decomposer includes a slurry separation unit and a decomposition unit, and the slurry separation unit and the decomposition unit are communicated through a connecting channel; the slurry separation The unit is divided into upper and lower parts by the filter screen assembly; the decomposition unit is provided with a hydrate decomposition gas outlet, a connecting channel interface and a regeneration liquid storage tank in sequence from top to bottom. The decomposer of the present invention can efficiently decompose the fluid hydrate slurry, and greatly reduces the energy consumption of heating and decomposing the hydrate slurry and regenerating the working fluid after decomposition for cooling and reuse. The present invention also provides a mixed gas separation system and method, which can carry out material transportation in the form of hydrate slurry, and cooperate with the hydrate decomposer of the present invention to ensure good fluidity of hydrate and ensure the continuity, scale and long-term separation of the separation device. The cycle runs stably.

Description

technical field [0001] The invention belongs to the field of gas, liquid and solid phase separation, and in particular relates to a hydrate decomposer and a system and method for separating mixed gas using hydrate technology. Background technique [0002] Hydrate technology has been a research hotspot at home and abroad in recent years. In addition to energy development and utilization, gas hydrate related technologies have derived many new applications, such as gas storage and transportation, separation of mixed gas and solution, sewage treatment, seawater desalination, CO 2 Storage, cold storage technology and many other fields. In 2014, the "Eighth International Natural Gas Hydrate Conference" was held in Beijing, which was the first time that the conference was held in a developing country, indicating that my country's hydrate research level has been recognized by the world, and at the same time it will inevitably trigger a new round of domestic energy development The up...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D29/03B01D3/38C10L3/00
CPCB01D3/007B01D3/38B01D29/03B01D53/78C10L3/00
Inventor 孟凡飞齐慧敏彭德强陈新王璐瑶廖昌建
Owner CHINA PETROLEUM & CHEM CORP