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A supercharged thermal vaporization phase change consolidation method and its thermal desensitization batch evaporator

An intermittent, evaporator technology, applied in vertical tube evaporators, evaporation, steam generation, etc., can solve the problems that the structure of the heating device cannot achieve intermittent heating and low heating efficiency, and achieve accelerated phase transition consolidation and improved foundation. The effect of carrying capacity and reducing investment cost

Active Publication Date: 2022-07-22
JIANGSU XINTAI GEOTECHNICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technical solution also adopts the vacuum preloading method and installs a foundation heating device for heating, but the structure of the heating device cannot realize intermittent heating, and it is only simple electric heating, and the heating efficiency is low, which needs further improvement

Method used

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  • A supercharged thermal vaporization phase change consolidation method and its thermal desensitization batch evaporator
  • A supercharged thermal vaporization phase change consolidation method and its thermal desensitization batch evaporator
  • A supercharged thermal vaporization phase change consolidation method and its thermal desensitization batch evaporator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: A pressurized heat-sensitive gasification consolidation method, combined with the method of pressurized vacuum precompression consolidation treatment of soft soil foundation (ZL200810156787.5) and the sludge consolidation drainage plate and filter cloth and drainage plate core ( ZL200910181702.3), including the following steps:

[0044] S1. Place the thermally desensitized batch evaporator in the bottom area of ​​the vacuum pre-pressed drainage plate in the sludge reinforcement area, turn on the heating, and spray high-pressure steam from the thermally desensitized batch evaporator during heating;

[0045] S2. Heating to 200°C, maintaining for 6min, then stopping for 12min,

[0046] The vacuum pressure is 90kPa, and the above process is repeated;

[0047] S3. When the liquid limit index of the surrounding reinforced soil is less than 0.98, the heating is stopped, and the gasification and consolidation are completed.

[0048] With reference to Example 1, Exa...

Embodiment 6

[0050] Example 6: as figure 1 As shown in the figure, a thermally desensitized batch evaporator for pressurized heat-sensitive gasification and consolidation method comprises a casing 1, two heating bodies 2 placed in the casing 1, and the heating body 2 comprises an electric heating body 2.1 and The wire 2.2 connected to the electric heating body 2.1, the wire 2.2 leads out of the housing 1 to connect to the power supply, the electric heating body 2.1 includes the heating tube base 2.1.1 and the metal joint 2.1.2 installed on the top of the heating tube base 2.1.1, the metal joint 2.1. 2 Connecting wires 2.2, heating tube base 2.1.1 includes upper and lower bases 2.1.1a and 2.1.1b, upper base 2.1.1a is graphite, lower base 2.1.1b is quartz, upper base 2.1.1a and metal joint 2.1. 1 Connection, the entire heating tube base 2.1.1 is formed by pressing and sintering of quartz and graphite abrasives, the metal joint 2.1.2 of the heating tube base 2.1.1 is wrapped with high tempera...

Embodiment 7

[0051] Example 7: as figure 2 As shown, referring to Embodiment 6, the housing 1 is divided into upper and lower parts 1.1 and 1.2, and a partition 7 is arranged in the middle, and the partition 7 is provided with an insertion hole 7.1, and the heating tube base 2.1.1 is inserted into the insertion hole 7.1. The connection hole 7.1 is fixed inside, and the metal joint 2.1.2 is located in the upper part of the shell 1.1. Effectively prevent the heating tube substrate from being displaced and broken in the shell, and easily broken due to the strong rigidity of the refractory material.

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Abstract

A pressurized heat-sensitive vaporization consolidation method, comprising the following steps: S1. placing a heat-desensitized intermittent evaporator in the bottom area of ​​a vacuum pre-pressed drainage plate in a sludge reinforcement area, and turning on heating; heat-desensitized intermittent evaporation during heating The device injects high pressure steam. S2. Heating to 100-400℃, maintaining for 3-120min, then stopping for 6-240min, vacuuming pressure greater than or equal to 80kPa, and repeating the above process; S3. When the liquid limit index of the surrounding reinforced soil is less than 0.98, stop heating and gasify Consolidation is complete. It can realize intermittent heating, high-pressure steam injection, improve the activity of water molecules, quickly flow to the low temperature area, and improve the consolidation efficiency.

Description

technical field [0001] The invention relates to the field of soft soil foundation treatment of geotechnical engineering, in particular to a vacuum pre-pressurized drainage process. Background technique [0002] In the field of geotechnical and environmental protection engineering, the problems of tight construction period and limited construction technology are often encountered for large-scale soft soil foundation reinforcement treatment and environmental protection in-situ restoration projects. There are many construction techniques in the prior art, but there are common phenomena such as low bearing capacity, high construction cost, long construction period, and difficulty in controlling construction quality. Therefore, when it is necessary to shorten the construction period and greatly reduce the construction cost, the above-mentioned conventional construction methods have many insurmountable technical problems. [0003] Chinese Patent Publication No. CN107190729A, disc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/11F22B1/28
CPCE02D3/11F22B1/28B01D1/0017B01D1/06E02D2250/0053
Inventor 金亚伟王军程瑾俞演名金亚军钱明郑明明王敏超王小东蒋君南金亚明
Owner JIANGSU XINTAI GEOTECHNICAL TECH CO LTD
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