CN101270272A - Composite wetter for cleaning atmosphere floating dust - Google Patents

Abstract

The invention discloses a composite humectant for cleaning floating dust in air. The composite humectant is prepared by adding 0.4 percent of sodium dodecyl benzene sulfonate by mass and 0.2 percent of polyoxyethylene sorbitan monostearate by mass into water. Compared with the prior humectant, the composite humectant disclosed by the invention has the advantages that the efficiency of the composite humectant is significantly improved, and the cost is not high.

Description

A kind of composite wettable agent of cleaning atmosphere floating dust

Technical field

The present invention relates to chemical dust suppression field, particularly the wet type dust-inhibitor.

Background technology

Along with the quickening of process of industrialization and the development of urban architecture industry, urban atmosphere dust pollution situation is serious day by day, develops the composite wettable agent that is applicable to the cleaning atmosphere floating dust of high performance cheap, has the meaning of particularly important.Studies show that, in fog system, can reduce the surface tension of water droplet, thereby reduce, increase the amounts of particles and the specific surface area that adheres to grit of ejection drop from the yardstick of the drop of nozzle ejection if in water, add wetting agent; Can allow grit easily be swallowed up in addition, thereby improve the collision efficiency of dust and drop by water droplet.Many tensio-active agent simple substance and combination thereof can be as wet type chemistry dust-inhibitors, but in numerous wetting agents, research and development are applicable to the dust humectant of the high efficiency, low cost of cleaning atmosphere floating dust, and this is still one problem to be solved, and its invention has important and practical meanings.

Summary of the invention

The object of the present invention is to provide a kind of composite wettable agent that is applicable to the cleaning atmosphere floating dust, with respect to existing wetting agent, its moistening efficient is higher, and cost is not high.

Of the present inventionly be applicable to that the composite wettable agent of cleaning atmosphere floating dust is: in water, add the Sodium dodecylbenzene sulfonate of mass percent 0.4% and the aqueous solution that 0.2% polysorbate60 prepares.

The moistening efficient of this compound wetting agent significantly improves, detect with drip method, its drop is sprawled diameter and is sprawled diameter than the drop of single 0.2% the polysorbate60 aqueous solution and improved 21.3%, the drop of the lauryl sodium sulfate aqueous solution than 0.8% is sprawled diameter and has been improved 79.3%, also sprawl diameter simultaneously and improved 16.4%, sprawl diameter than the drop of the aqueous solution of compound 0.2% polysorbate60 of 0.4%SDS and improved 13% than the drop of the aqueous solution of compound 0.6% Sodium dodecylbenzene sulfonate of 0.4% sodium lauryl sulphate (SDS) (SDBS).

Embodiment

Get the atmospheric dust of the long-time lamination of building windowsill, measure the dust size great majority between 180～200 orders.

Take by weighing sodium lauryl sulphate and Sodium dodecylbenzene sulfonate 0.2g, 0.4g, 0.6g, 0.8g etc., weighing up polysorbate60 again is 0.1g, 0.2g, 0.4g and 0.6g; The clear water that adds 100ml is respectively prepared the wetting agent solution of various different concns.Adopt drip method, promptly with in atmospheric dust, the drip drop of wetting agent solution of drop-burette, treat that drop is sprawled fully in dust after, the mensuration drop is sprawled diameter in dust, and judges the effect of the moistening dust of this wetting agent according to the size of its diameter.

Statistics is shown in table 1～table 3, and experimental temperature is 26 ℃, and relative humidity is 70%.

Table 1 different concns Sodium dodecylbenzene sulfonate solution droplets sprawl statistics

Concentration (wt%)	0.2	0.4	0.6	0.8
					Drop is sprawled mean diameter (cm)	0.94	1.09	1.27	0.94

Table 2 different concns sodium dodecyl sulfate solution drop sprawl statistics

Concentration (wt%)	0.2	0.4	0.6	0.8
					Drop is sprawled mean diameter (cm)	1.03	1.26	1.08	0.87

Table 3 different concns polysorbate60 solution droplets sprawl statistics

Concentration (wt%)	0.1	0.2	0.4	0.6
					Drop is sprawled mean diameter (cm)	1.12	1.29	1.16	1.04

Take by weighing three parts of the Sodium dodecylbenzene sulfonatees of three parts of the sodium lauryl sulphate of three parts of polysorbate60s, 0.4g of 0.2g and 0.6g, mix the back in twos and add 100ml water.Measure the effect of the moistening atmospheric dust of this wetting agent, statistics such as table 4 with drip method.

The drop of table 4 composite wettable agent solution sprawl statistics

The composite wettable agent	0.4％SDS + 0.6％SDBS	0.4%SDS+ 0.2% polysorbate60	0.4%SDBS+ 0.2% polysorbate60
				Drop is sprawled mean diameter (cm)	1.34	1.38	1.56

As can be seen from Table 4, more than 3 kinds of wetting agents compound in twos after, they have all had further enhancing to the wetting capacity of dust, but wherein 0.4% SDBS and 0.2% polysorbate60 compound after, their drop is sprawled diameter and is significantly improved, the drop of the polysorbate60 than single 0.2% is sprawled diameter and has been improved 21.3%, and the drop of the lauryl sodium sulfate aqueous solution than single 0.8% is sprawled diameter and improved 79.3%.

Claims (1)

1. the composite wettable agent of a cleaning atmosphere floating dust is characterized in that: described composite wettable agent is prepared by the Sodium dodecylbenzene sulfonate of interpolation mass percent 0.4% and 0.2% polysorbate60 in water.