Unlock instant, AI-driven research and patent intelligence for your innovation.

Low-temperature hydration separation method and system

A hydration separation and low temperature technology, applied in the field of low temperature hydration separation methods and systems, can solve problems such as easy clogging of pipelines, increase energy consumption in the hydration separation process, and reduce the utilization rate of hydration working fluid, so as to reduce energy consumption, improve speed and separation. effect, the effect of shortening the induction period

Active Publication Date: 2017-11-17
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the hydrate formed by the reaction of gas and hydrate working fluid is viscous, and it grows continuously and easily adheres to the walls of pipes and containers. The viscosity of the mixture containing hydrate increases rapidly with the increase of hydrate content. , so that it is easy to block the pipeline; therefore, the volume content of hydrate in the mixture containing hydrate in the conventional low-temperature hydration separation process is generally not more than 15%, which greatly reduces the utilization rate of the hydration working fluid and improves the performance of the hydration separation process. consumption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-temperature hydration separation method and system
  • Low-temperature hydration separation method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The low-temperature hydration separation method of this embodiment is used for low-temperature hydration separation of the mixed gas, wherein the composition of the mixed gas is: 50.4% methane, 49.6% nitrogen; the working fluid is 6% tetrahydrofuran aqueous solution; figure 1 As shown, the low temperature hydration separation method steps are as follows:

[0046] 1. Low temperature hydration reaction

[0047] The mixed gas is fed into the working fluid to carry out the low-temperature hydration reaction, wherein the conditions of the low-temperature hydration reaction are: temperature 5°C, absolute pressure 1.1MPa, and the low-temperature hydration reaction product is obtained.

[0048] 2. Low temperature separation

[0049] The low-temperature hydration reaction product obtained above is subjected to low-temperature separation, wherein the conditions for low-temperature separation are: temperature 5° C., absolute pressure 1.1 MPa, forming residual gas containing 48% m...

Embodiment 2

[0057] The low-temperature hydration separation method of this embodiment is used for low-temperature hydration separation of the mixed gas, wherein the composition of the mixed gas is: 50.4% methane, 49.6% nitrogen; the working fluid is 6% tetrahydrofuran aqueous solution; the steps of the low-temperature hydration separation method are as follows:

[0058] 1. Low temperature hydration reaction

[0059] The mixed gas is fed into the working fluid to carry out the low-temperature hydration reaction, wherein the conditions of the low-temperature hydration reaction are: temperature 5°C, absolute pressure 1.1MPa, and the low-temperature hydration reaction product is obtained.

[0060] 2. Low temperature separation

[0061] The low-temperature hydration reaction product obtained above is subjected to low-temperature separation, wherein the conditions for low-temperature separation are: temperature 5° C., absolute pressure 1.1 MPa, forming residual gas containing 48% methane (compo...

Embodiment 3

[0069] Such as figure 2 As shown, the low-temperature hydration separation system of the present invention includes a reaction tube 1, a low-temperature separation device 2, a circulation pipe 3 and a high-temperature decomposition device 4, and the inlet end of the reaction tube 1 is provided with a mixed gas inlet 11, and the low-temperature separation device 2 is connected with the The outlet end of the reaction tube 1 communicates with the inlet end of the circulation pipe 3, and the low temperature separation device 2 is provided with a gas outlet 21 and a liquid outlet 22. The end communicates with the inlet end of the reaction tube 1 through the high-pressure circulation pump 6, and a gas outlet 41 is provided on the pyrolysis device 4.

[0070] Further, the above-mentioned hydration separation system also includes a dissolving pipe 7, a liquid outlet is provided on the pyrolysis device 4, and the liquid outlet communicates with the inlet end of the dissolving pipe 7, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a low-temperature hydration separation method and system. The low-temperature hydration separation method comprises the following steps: introducing to-be-separated mixed gas into a working solution for a low-temperature hydration reaction, and performing low-temperature separation on a product in the low-temperature hydration reaction to form residual gas and a hydrate-containing mixed solution; conveying one part of the mixed solution formed through low-temperature separation to the working solution for continuous low-temperature hydration reaction; heating and performing high-temperature dissolving on the other part of the mixed solution formed through low-temperature separation to form dissolved gas and a dissolved solution. With adoption of the low-temperature hydration separation method and system, the working solution use rate is increased, and the energy consumption in a separation process is reduced.

Description

technical field [0001] The invention relates to a hydration separation method, in particular to a low-temperature hydration separation method and system. Background technique [0002] Hydrate separation technology is a new technology that uses the formation of hydrate crystals to separate from the original components. Different from the original. The main steps of the hydration separation method include: 1) a certain (or some) components in the mixture form solid hydrate crystals at a certain temperature; 2) effectively separate the hydrate crystals in the mixture system, and then remove It decomposes into water and hydrate formers. [0003] Hydrate separation technology can be used in mixed gas with low hydrate formation gas content and high separation requirements; or far below the saturation value, which is easy to degrade and denature at high temperature, and the solution composition is complex, low-concentration and thermally stable Solutions with poor properties, as...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01D53/78
CPCB01D53/78
Inventor 郭绪强孙强
Owner CHINA UNIV OF PETROLEUM (BEIJING)