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Treatment system and method for consolidating soft soil foundation by utilizing industrial waste gas heat

A technology for soft soil foundation and industrial waste gas, which is applied in soil protection, infrastructure engineering, construction, etc. It can solve the problems of low-carbon environmental protection and construction efficiency gaps in processing devices, achieve significant low-carbon environmental protection effects, and accelerate carbonization and solidification , cost-saving effect

Active Publication Date: 2013-06-12
SOUTHEAST UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] my country is in a period of rapid development of engineering construction, there are still a large number of foundation reinforcement projects, and there are many technologies and methods for foundation reinforcement in my country, but the current processing devices still have a lot of problems in terms of meeting low-carbon environmental protection and construction efficiency. big gap

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  • Treatment system and method for consolidating soft soil foundation by utilizing industrial waste gas heat

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Experimental program
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Effect test

Embodiment 1

[0037] a. Use the anti-corrosion insulation pipe 4 to transfer the heat of the industrial waste gas after dust removal into the industrial waste gas thermal separation device 5, and the separated waste gas passes into the absorption chamber 8 through the anti-corrosion air guide pipe 6, and the separated heat is introduced through the anti-corrosion heat conduction pipe 7 heating box 9,

[0038] b. The reaction solution 16 added in the absorption chamber 8 is sodium hydroxide solution, close the exhaust valve B12, open the control valve A13, after excessive carbon dioxide gas and solution fully react to generate saturated sodium bicarbonate solution, close the control valve A13 and reduce Pressure valve 20, open control valve B17 and control valve C24, the exhaust gas will press the saturated sodium bicarbonate solution in the absorption chamber 8 into the decomposition chamber 10 through the condensation pipe 19, after the solution completely enters the decomposition chamber 1...

Embodiment 2

[0045] a. Use the anti-corrosion insulation pipe 4 to transfer the heat of the industrial waste gas after dust removal into the industrial waste gas thermal separation device 5, and the separated waste gas passes into the absorption chamber 8 through the anti-corrosion air guide pipe 6, and the separated heat is introduced through the anti-corrosion heat conduction pipe 7 heating box 9,

[0046]b. The reaction solution 16 added in the absorption chamber 8 is a sodium carbonate solution, close the exhaust valve B12, open the control valve A13, after excess carbon dioxide gas and the solution fully react to generate saturated sodium bicarbonate solution, close the control valve A13 and reduce pressure Valve 20, open the control valve B17 and control valve C24, the exhaust gas will press the saturated sodium bicarbonate solution in the absorption chamber 8 into the decomposition chamber 10 through the condensation pipe 19, after the solution completely enters the decomposition cha...

Embodiment 3

[0053] a. Use the anti-corrosion insulation pipe 4 to transfer the heat of the industrial waste gas after dust removal into the industrial waste gas thermal separation device 5, and the separated waste gas passes into the absorption chamber 8 through the anti-corrosion air guide pipe 6, and the separated heat is introduced through the anti-corrosion heat conduction pipe 7 heating box 9,

[0054] b. the reaction solution 16 added in the absorption chamber 8 is potassium hydroxide solution, close the exhaust valve B12, open the control valve A13, after excessive carbon dioxide gas and solution fully react to generate saturated potassium bicarbonate solution, close the control valve A13 and reduce Pressure valve 20, open control valve B17 and control valve C24, the exhaust gas will press the saturated potassium bicarbonate solution in the absorption chamber 8 into the decomposition chamber 10 through the condensation pipe 19, after the solution completely enters the decomposition ...

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Abstract

The invention provides a treatment system and a method for consolidating a soft soil foundation by utilizing industrial waste gas heat. The treatment system comprises an industrial waste gas heat separation device, a waste gas purification device, a tail gas collection and treatment system, a foundation soil mixing device and a gas pumping device. The method comprises the following steps of extracting pure carbon dioxide from the dedusted, desulfurized and denitrated waste gas heat by the separation device and the purification device; mixing a curing agent to foundation soil by the mixing device; and pumping the pure carbon dioxide into mixed soil by the gas pumping device to carbonize and consolidate the soft soil foundation. The waste gas purification device comprises an absorption chamber and a decomposition chamber which are sealed devices with valves, and a purification solution in the device is an alkali solution or a carbonate solution, or a mixture thereof, and can be recycled. The method and the treatment system fully utilize the industrial waste gas heat, so that the difficulty of resource utilization of the industrial waste gas heat is solved, and meanwhile, the construction efficiency of foundation consolidation and the strength of foundation soil are improved.

Description

technical field [0001] The invention relates to a treatment system and method for strengthening soft soil foundations, in particular to a treatment system and method for strengthening soft soil foundations by using industrial waste gas heat, and belongs to the technical field of environmental geotechnical engineering. Background technique [0002] In 2007, the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) pointed out: "Global climate warming since the middle of the 20th century is due to the increase in man-made greenhouse gas emissions, especially carbon dioxide." At present, the global carbon dioxide emissions caused by human activities are about 24 billion tons per year, and the cumulative carbon dioxide concentration is 379ppm, which is 33% higher than that before industrialization, and will increase at a rate of more than 1ppm every year, causing many major disasters to the world. According to literature statistics, carbon dioxide emis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/11E02D3/12
Inventor 蔡光华易耀林刘松玉秦小青
Owner SOUTHEAST UNIV
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