Method and device for generating ectopic foam

A foam, ex-situ technology, applied in mixing methods, chemical instruments and methods, dissolution and other directions, can solve the problems of foam gas content, high randomness in stability, inability to control foam characteristics, and inability to solve flushing liquid and other problems, and achieve device assembly. Simple, simple design, broad market benefits

Inactive Publication Date: 2011-09-14
陈家军 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among them, the heterotopic foam is generally produced by aerating the foaming agent or vibrating and stirring the foaming agent. This method cannot control the size of the generated foam, and the air content and stability of the generated foam are also random. larger
[0005] Therefore, flushing with heterotopic foam produced by traditional methods cannot control the characteristics of the generated foam, nor can it solve the problem of uneven flow of flushing fluid in heterogeneous media

Method used

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  • Method and device for generating ectopic foam
  • Method and device for generating ectopic foam
  • Method and device for generating ectopic foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Apparatus for Preparing Heterotopic Foam

[0031] Refer to attached figure 1 , the device for preparing heterotopic foam provided by the present invention includes a nitrogen compression bottle, a pressure reducing valve, a precision pressure regulating valve, a one-way valve, a flow meter 1, a peristaltic pump, a flow meter 2, a gas-liquid mixing chamber, and a porous material (consolidated sand core, average pore size 0.1mm), foam receiving bottle and portable infrared gas analyzer.

[0032] In the gas phase pipeline, a precision pressure regulating valve is installed after the pressure reducing valve, and then connected with the check valve 1 and the flow meter 1, and the connecting pipe is a Φ5mm hose;

[0033] In the liquid phase pipeline, the peristaltic pump is followed by a check valve 2 and a flow meter 2, and the connecting pipe is a Φ5mm hose;

[0034] The connecting pipe between the gas-liquid phase pipe and the gas-liquid mixing chamber is a Φ5...

Embodiment 2

[0037] Example 2: Method of Preparing Heterotopic Foam

[0038] 1) Open the pressure reducing valve connected to the nitrogen compression bottle in the gas phase pipeline, adjust the precision pressure regulating valve, the pressure adjustment range is 0.1Mp~0.25Mp, and adjust the flow meter 1 to 10mL / min;

[0039] 2) Simultaneously turn on the peristaltic pump to start pumping 5000 mg / L sodium dodecyl sulfate (SDS) solution, and adjust the flow meter 2 to 100 mL / min;

[0040] 3) Gas and liquid enter the gas-liquid mixing chamber at the same time for mixing;

[0041] 4) The mixed gas and liquid enter the consolidated sand core, and the generated foam enters the foam receiving bottle;

[0042] 5) The residual gas and excess nitrogen in the system enter the infrared gas analyzer and then discharge.

[0043] In the above experiment, no liquid accumulation was found in the foam receiving bottle, and infrared monitoring showed that no nitrogen outflow was found. The particle size...

Embodiment 3

[0044] Example 3: Apparatus for Preparing Heterotopic Foam

[0045] Refer to attached figure 1 , The device and pipeline connection method for preparing ectopic foam provided by the present invention are the same as those in Example 1, and the porous material adopts metal aeration head, and the average pore diameter is about 0.98mm.

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Abstract

The invention discloses a method and a device for generating ectopic foam. The method comprises the following steps of: controlling the flow rate of a foaming agent to be 0.1-50mL / min and the flow rate of gas to be 1-500mL / min respectively by using a flowmeter, mixing the gas and liquid in a volume ratio of 100:35-100:0.2, and cutting the mixed gas and liquid by using a porous material to obtain the foam with the grain size ranging from 10 to 3,500mu m. Compared with the prior art, the invention has the advantage that: by utilizing the basic characteristic that the foam can be generated under manual control through the ectopic foam generating technology, the generated foam can be widely applied to the field of polluted soil washing.

Description

technical field [0001] The invention relates to an ectopic foam generating technology, in particular to an ectopic foam generating method and a generating device applied in the field of soil flushing and restoration. Background technique [0002] Foam flushing is a new in-situ soil remediation technology developed on the basis of surfactant flushing that can significantly improve the flow uniformity (flow sweep rate) of flushing fluid in heterogeneous media. The advantage of foam flushing technology is that it can effectively control the flow of flushing fluid in the soil, try to eliminate the uneven flow caused by soil heterogeneity, and increase the contact efficiency between flushing fluid and soil pollutants. At present, many studies have shown that the characteristics of the foam itself, such as the air content, stability and size of the foam, are the key parameters affecting the flow of the foam. [0003] There are two main types of foam generation methods currently u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/04B01F5/06B01F15/04
Inventor 陈家军王浩
Owner 陈家军
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