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Green process for exploiting combustible ice

A green process and interface technology, applied in the field of green process, can solve the problems of easy condensation of heat source fluid and low mining cost, and achieve the effects of low mining cost, improving mining efficiency and enhancing mass transfer efficiency.

Active Publication Date: 2020-12-25
NANJING YANCHANG REACTION TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to solve the phenomenon that the heat source fluid is easy to condense in the traditional combustible ice mining process, and to provide a green technology for mining combustible ice, which achieves the effects of high mining efficiency and low mining cost

Method used

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  • Green process for exploiting combustible ice
  • Green process for exploiting combustible ice
  • Green process for exploiting combustible ice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 , figure 2 Shown, a kind of green technology of exploiting combustible ice of the present invention comprises the following steps:

[0041] S1, the natural gas in the first storage tank is pressurized into the micro-interface strengthening device through the compressor, and the pressure in the compressor is 10Mpa;

[0042] S2, the seawater concentration device prepares seawater into saturated brine and enters the heat exchanger, and is heated to 100°C by the heat exchanger and enters the micro interface strengthening device;

[0043] S3, natural gas and saturated brine are mixed through the micro-interface strengthening device to form micro-bubbles and / or micro-droplet emulsions. The gas-liquid volume ratio fed into the micro-interface strengthening device is 10:1. By adjusting the ratio of gas-liquid mixing, it can Regulate the ratio of gas-liquid mixing, and regulate the temperature range of the freezing point in the first shaft to -30°C;

[0044]...

Embodiment 2

[0049] Such as figure 1 , image 3 Shown, a kind of green technology of exploiting combustible ice of the present invention comprises the following steps:

[0050] S1, the natural gas in the first storage tank is pressurized into the micro-interface strengthening device through the compressor, and the pressure in the compressor is 15Mpa;

[0051] S2, the seawater concentration device prepares seawater into saturated brine and enters the heat exchanger, and is heated to 120°C by the heat exchanger and enters the micro interface strengthening device;

[0052] S3, natural gas and saturated brine are mixed through the micro-interface strengthening device to form microbubbles and / or micro-droplet emulsions. The gas-liquid volume ratio of the micro-interface strengthening device is 200:1. By adjusting the ratio of gas-liquid mixing, it can Regulate the ratio of gas-liquid mixing, and regulate the temperature range of the freezing point in the first shaft to -45°C;

[0053]The mic...

Embodiment 3

[0058] Such as figure 1 , figure 2 Shown, a kind of green technology of exploiting combustible ice of the present invention comprises the following steps:

[0059] S1, the natural gas in the first storage tank is pressurized into the micro-interface strengthening device through the compressor, and the pressure in the compressor is 10Mpa;

[0060] S2, the seawater concentration device prepares seawater into saturated brine and enters the heat exchanger, and is heated to 100°C by the heat exchanger and enters the micro interface strengthening device;

[0061] S3, natural gas and saturated brine are mixed through the micro-interface strengthening device to form microbubbles and / or micro-droplet emulsions. The gas-liquid volume ratio of the micro-interface strengthening device is 500:1. By adjusting the ratio of gas-liquid mixing, it can Regulate the ratio of gas-liquid mixing, and regulate the temperature range of the freezing point in the first shaft to -55°C;

[0062] The m...

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Abstract

The invention discloses a green process for exploiting combustible ice. The green process comprises the following steps that natural gas and saturated saline water are mixed through a micro-interfacereinforcing device to form micro-bubbles and / or micro-droplet emulsion; the prepared micro-bubbles and / or micro-droplet emulsion are / is pumped into a first vertical shaft, the upper end of the first vertical shaft is connected with a micro-interface reinforcing device, and the lower end of the first vertical shaft extends into a combustible ice ore bed; the combustible ice ore bed is melted into agas-liquid mixture through the micro-bubbles and / or micro-droplet emulsion, and the gas-liquid mixture is conveyed to a gas-liquid separation device through a second vertical shaft; after separationby the gas-liquid separation device, natural gas is conveyed to a second storage tank, and saline water is conveyed to a concentration device; and a part of natural gas is stored by the second storagetank, the rest natural gas is conveyed to a first storage tank, and once cyclic exploitation is completed. The green process for exploiting combustible ice provided by the invention has the advantages that a phenomenon that heat source fluid is easy to condense in the combustible ice exploiting process is avoided, and the effects of high exploitation efficiency and low exploitation cost are achieved.

Description

technical field [0001] The invention relates to a green technology for mining combustible ice, which belongs to the technical field of energy mining. Background technique [0002] With the reduction of traditional energy sources and the improvement of environmental protection requirements, it is imminent to develop and utilize new clean energy sources. Combustible ice is an ice-like crystalline substance formed by natural gas and water under high-pressure and low-temperature conditions, and is distributed in deep-sea sediments or permafrost in land areas. Submarine combustible ice has attracted global attention because of its large reserves, wide distribution, and no pollution to the environment after burning, and countries are competing to develop it. [0003] The existing combustible ice mining is to use high-pressure water vapor to drive into the ore layer containing combustible ice, which consumes a lot of energy, and the high-pressure water vapor is cooled by the pipel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/01E21B43/16E21B43/285
CPCE21B43/01E21B43/166E21B43/285E21B43/16E21B43/24
Inventor 张志炳周政门存贵张锋李磊孟为民王宝荣杨高东罗华勋杨国强田洪舟
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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