CN114672324A

CN114672324A - Additive for improving atomization effect and method for improving working efficiency of liquid spraying equipment

Info

Publication number: CN114672324A
Application number: CN202011555753.0A
Authority: CN
Inventors: 韩薇
Original assignee: Tianjin Hepu Feila New Material Co ltd
Current assignee: Tianjin Hepu Feila New Material Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2022-06-28

Abstract

The invention provides an additive for improving atomization effect and a method for improving working efficiency of liquid spraying equipment, wherein the additive comprises one or more of acetylene glycol surfactants, acetylene glycol polyoxyethylene/polyoxypropylene ether, polyoxyethylene ether with a branched chain of C7-C10 and isooctyl alcohol succinate sulfonate in any proportion. By adding the surfactant disclosed by the invention into fluid, the dynamic surface tension of atomized liquid drops can be obviously reduced, so that a larger specific surface area is obtained, and the working efficiency of atomization equipment is improved.

Description

Additive for improving atomization effect and method for improving working efficiency of liquid spraying equipment

Technical Field

The invention relates to the technical field of surfactant application, in particular to an additive for improving an atomization effect and a method for improving the working efficiency of liquid spraying equipment.

Background

The spraying equipment is widely applied to the life and production process of human beings, and the purposes of household environment control, atmospheric environment protection (such as dust removal), gas-liquid chemical reaction, harmful substance absorption and the like can be realized through the spraying equipment.

The action principle of the spraying equipment is as follows: the fluid is decomposed into a large amount of tiny liquid after passing through the spraying part, and a large surface area (the sum of the surface areas of all liquid drops) is released, and the newly generated surfaces and substances around the liquid drops perform physical adsorption and chemical reaction (such as spray type polyether synthesis reaction), so that the purpose of life and production is achieved.

From the energy conservation point of view, the spraying process can be described as: the increased gibbs free energy of the fluid, which is equal to the surface work done by the device on the fluid, and also equal to the effective work done by the spraying device, can be expressed as follows:

△G＝-W_{surface of}＝γS＝W_{Electric power}

Δ G represents gibbs free energy change; γ represents a surface tension; s represents a specific surface area;

as can be seen from the above formula, the surface tension is inversely proportional to the specific surface area, but in the spraying process, it is necessary to obtain the specific surface area S as large as possible, and therefore, controlling the surface tension of the liquid droplets is an important means for changing the specific surface area.

It is common to add surfactants to alter the surface tension of a liquid, but in the droplets ejected by the spray device described in the present invention, the values of each droplet and the droplet at different instants are different and are expressed as:

referred to as dynamic surface tension. It is clear that the result of the dynamic surface tension control is related to the working efficiency of the atomization device, and theoretically, the lower the dynamic surface tension, the larger the specific surface area obtained, and the better the atomization effect.

Disclosure of Invention

The invention aims to provide an additive for improving atomization effect aiming at technical defects in the prior art.

Another object of the invention is a method of increasing the efficiency of operation of a liquid spraying apparatus.

The technical scheme adopted for realizing the purpose of the invention is as follows:

an additive for improving atomization effect comprises one or more of acetylene glycol surfactant, acetylene glycol polyoxyethylene/polyoxypropylene ether, polyoxyethylene ether with branched chain of C7-C10, and isooctyl alcohol succinate sulfonate at any ratio.

In the above technical scheme, the structural formula of the acetylene glycol surfactant is as follows:

the structural formula of the alkynediol polyoxyethylene/polyoxypropylene ether is as follows:

wherein m is 1-40, n is 0-5, EO and PO block arrangement is not limited;

the structural formula of the polyoxyethylene ether with the branched chain of C7-C10 is as follows:

wherein R is a C1-4 alkane; x is 3-10;

the isooctanol succinate sulfonate is isooctanol succinate sulfonate sodium salt or isooctanol succinate sulfonate ammonium salt, wherein the isooctanol succinate sulfonate ion has a structural formula:

in the technical scheme, the additive comprises one or two of acetylene glycol surfactant and acetylene glycol polyoxyethylene/polyoxypropylene ether, and simultaneously comprises one or two of polyoxyethylene ether with a branched chain of C7-C10 and isooctyl alcohol succinate sulfonate.

In the above technical scheme, the additive further comprises a solvent. The measures of the above surfactants alone, or after mixing, or adding a dilution of a solvent to help the uniformity of the morphology of the commercial product belong to the content of the present invention

A method of increasing the efficiency of operation of a liquid spray apparatus incorporates the additive in the spray fluid.

In the technical scheme, the additive accounts for 0.01-10% of the mass of the spraying fluid.

In the technical scheme, the additive accounts for 6-10% of the mass of the spraying fluid.

In another aspect of the invention, the use of the additive to improve the atomisation efficiency of a liquid spraying device.

In the above technical solution, the spraying device is a system, such as a nozzle, which can break up liquid fluid into small droplets, and each droplet has a diameter of less than 0.15 mm.

The application of one or more of acetylene glycol surfactant, acetylene glycol polyoxyethylene/polyoxypropylene ether, polyoxyethylene ether with branched chain of C7-C10, and isooctyl alcohol succinate sulfonate as additive for improving atomization effect.

Compared with the prior art, the invention has the beneficial effects that:

by adding the surfactant disclosed by the invention into fluid, the dynamic surface tension of atomized liquid drops can be obviously reduced, so that a larger specific surface area is obtained, and the working efficiency of atomization equipment is improved.

Detailed Description

The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

This example evaluates each surfactant with the following atomization effect

1) Experiment for absorbing HCl gas by spraying

In a HCl tail gas disposal tower of a certain factory production device, the gas flow is 1000m³H, concentration 4000mg/m³The absorption space of the absorption tower is phi 1 x 8m, the conical nozzle is positioned at a position 5m away from the bottom of the tower, the spraying covering diameter is 0.98m, the absorption flow channel is basically covered, and the fluid flow is 3L/min. By means of HCl off-gas concentration sensors arranged at the bottom and top of the towerAnd monitoring the absorption condition of the aqueous solution on the HCl tail gas, and evaluating the spraying effect by calculating the absorption rate of the HCl tail gas.

2) Dynamic surface tension measurement

After the aqueous solution of 1) is prepared, a sample is taken for surface tension measurement, a BP-100 surface tension side tester produced by German Kluyverson company is adopted for measurement, the measurement principle of the instrument is a maximum bubble pressure method, and the bubble service life is 150 ms.

Example 1 (blank absorption Rate verification, as S1)

2000kg of purified water is filled in a water tank, a water supply pump of an absorption tower is started, spray absorption is started, the numerical values of HCl tail gas concentration sensors at the bottom and the top of the tower are recorded, when the fluctuation of sensor data is less than 2%, the absorption is in a stable state, and the sensor data at the bottom and the top of the tower in the stable state are read.

Examples 2 to 40 (written as S2-S40)

Adding a surfactant metered in the table below into a water tank, adding purified water to complement to 2000kg, mixing uniformly, starting a water supply pump of an absorption tower, starting spray absorption, recording the numerical values of HCl tail gas concentration sensors at the bottom and the top of the tower, indicating that the absorption is in a stable state when the data fluctuation of the sensors is less than 2%, and reading the data of the sensors at the bottom and the top of the tower in the stable state.

In examples 2-40, the trade name and purchase source of each surfactant is as follows:

in examples 2 to 40(S2 to S40), the surfactant ratios are shown in the following table.

The absorption effects of examples 1-30 were compared, and the data in the table below were obtained.

From the above table, it can be seen that the absorption rate of the tail gas by the method for improving atomization efficiency provided by the present invention is greatly improved, whereas examples 12 to 16 (the addition amount of the active agent is 6 to 10 wt%) almost achieve complete absorption of HCl gas, and it can be seen that the effect of reducing dynamic surface tension is significant. However, too much surfactant may cause fluid foaming problems, thereby affecting atomization, and may also result in undesirable absorption rates.

Compared with FS-204 and FS-304, the FS-304 has better effect than FS-204, the acetylene glycol has longer carbon chain and better atomization effect, and compared with FS-620 and FS-683, the FS-620 has better effect than FS-683, the acetylene glycol has shorter polyether chain and better atomization effect, the Superwet-320 has better effect than FS-304, and the atomization effect is optimized after the carbon chain of the acetylene glycol is grafted.

The two types of surfactants have better effect than one of the two types of surfactants, namely FS-204 or FS-304, FS-620 or FS-683, Superwet-320 or Superwet-360, and can improve the water solubility of the FS-204, FS-304, FS-620, FS-683, Superwet-320 or Superwet-360, improve the dosage and optimize the atomization effect when being matched with E (polyoxyethylene ether with a branched chain of C7-C10) or F (isooctyl alcohol succinate sulfonate).

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The additive for improving atomization effect is characterized by comprising one or more of acetylene glycol surfactants, acetylene glycol polyoxyethylene/polyoxypropylene ether, polyoxyethylene ether with a branched chain of C7-C10 and isooctyl alcohol succinate sulfonate in any proportion.

2. The additive of claim 1, wherein the acetylenic diol surfactant has the formula:

3. the additive of claim 1 wherein said acetylenic diol polyoxyethylene/polyoxypropylene ether has the formula:

wherein m is 1-40, n is 0-5, EO and PO block arrangement is not limited.

4. The additive of claim 1 wherein the polyoxyethylene ether having a branch of C7-C10 has the formula:

wherein R is a C1-4 alkane; x is 3-10.

5. The additive of claim 1 wherein said isooctanol succinate sulfonate is isooctanol succinate sulfonate sodium salt or isooctanol succinate sulfonate ammonium salt wherein said isooctanol succinate sulfonate ion has the formula:

6. the additive of claim 1, wherein the additive further comprises a solvent.

7. The additive of claim 1, wherein the additive comprises one or two of an acetylenic diol surfactant, and acetylenic diol polyoxyethylene/polyoxypropylene ether, and one or two of polyoxyethylene ether having a branched chain of C7-C10, and isooctyl alcohol succinate sulfonate.

8. A method of increasing the efficiency of operation of a liquid spraying apparatus wherein an additive as claimed in any one of claims 1 to 6 is added to the spray fluid, preferably wherein the additive is present in the range of 0.01 to 10%, more preferably 6 to 10% by mass of the spray fluid.

9. Use of an additive according to any one of claims 1 to 6 for increasing the efficiency of operation of a liquid spraying apparatus.

10. The use according to claim 9, wherein the spraying apparatus is a system for breaking up a liquid fluid into small droplets each having a diameter of less than 0.15 mm.