Blowing agent in the plastics additives
2013-08-08 by seoer8
Blowing agent in the plastic additive
plastic additive is a surface-active substances, mainly in the air - water interface reduce the interfacial tension of air in the slurry to promote the formation of small
bubbles expand sorting interface and ensure that the bubbles rise to form a foam layer.
The formation of bubbles in the flotation pulp, mainly depends on the various types of inflatable flotation device stirring device, and add the appropriate amount to
the pulp foaming agent.
Foaming agents generally are surface active agent, its molecular structure a non-polar lipophilic (hydrophobic) group and a polar hydrophilic (oleophobic) groups,
forming the hydrophilic both have Lipophilic The so-called "parent structure" molecules. Lipophilic group may be an aliphatic hydrocarbon group,
Alicyclic hydrocarbon groups and aromatic hydrocarbon group or with O, N atoms such as an aliphatic hydrocarbon group, an alicyclic hydrocarbon group and aromatic
hydrocarbon group; hydrophilic group is usually a carboxylic acid group, a hydrocarbon group, a sulfonic acid group, a sulfuric acid group, a phosphonic acid group ,
an amino group, a nitrile group, a thiol group, a halogen group, an ether group and the like. Frother plus
Into water, the hydrophilic group into the aqueous phase into the oil phase lipophilic or erection in the air, or the interface layer is formed on the surface
orientation, so that the interfacial tension or surface tension reduction. In general, a very small amount of foaming agent-containing aqueous solution is a foaming.
Common foaming agents are hydroxy compounds, ethers and ether alcohols, ketones and pyridines.
How to use:
For oil (gas production) wells draining process. This process is also known as oil (gas) induced flow (drainage) process technology. The proportion of blowing or
plunger pump with a pump from a christmas tree directly into oil and gas wells lubricator.
Recommended dosage = bottom water of 0.1% + 0.1% Nissan fluid or water meter estimate Nissan, 0.5 ~ 10kg/m3. According to timely use of effects and adjust the dosage
Well selection conditions: a. Due to bottom water caused by production, production of oil and gas wells; b. Liquid more than 350 wells.
Sand washing process for the foam. The W-101 foaming agent formulated into an aqueous solution of 1 to 6%, the use of the air compressor and pump the gas by a certain
percentage aqueous solution into the foam generator and foaming agent, foaming bubbles generated sand washing fluid into the wellbore. The sand washing process
according to the pressure of the formation
And determine the depth of the borehole liquid ratio. Generally the wellbore pressure control formation pressures equal to or slightly larger than, smaller than the
hydrostatic pressure, which can reduce leakage, but also to ensure oil does not spit of sand. If the order reservoir plugging, you can control the wellbore pressure to
less than the formation pressure
. Recommended dosage: oil leakage under the circumstances, is generally 80 ~ 600kg.