JPS6342722A - Humidifying and atomizing device for powder - Google Patents

Abstract

PURPOSE:To efficiently perform the treatment of a reactive agent for enhancing reaction efficiency by allowing a desuperheating and humidifying medium to once fall in a water tank and thereafter draining it and feeding it together with dry powder to a vibratory mixing screen device and separating both and carrying dry powder. CONSTITUTION:A dry reactive agent 9 and a treating medium 10 are introduced into receiving parts A, B, C of a vibrating conveyer 1. In a mixing part D, the width of a draff is enlarged and the layer thickness is made thin and simultaneously the reactive agent 9 is mixed with the medium 10 and the surface of the medium is coated with the reactive agent 9. In the vibrating screen part E, the reactive agent coated on the surface of the medium is peeled in a particulate shape by collision or the like and passed through a screen 2 and the medium 10 is discharged to a water tank 7 and quantitatively scraped up with a scraper 6, drained and thereafter fed to a vibrating conveyer 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is suitable for application, for example, to the treatment of reactants for increasing reaction efficiency, which is applied to the recycling of reactants in harmful gas removal equipment. This invention relates to a humidifying and atomizing device for powder.

[Conventional technology]

To remove harmful gases (e.g. hydrogen chloride) emitted from municipal waste incineration plants, etc., reactants (slaked lime, etc.) are transported by air to relatively low temperatures (150 to 450°C).
) Noxious gases are removed by blowing into the gas and reacting with the noxious gases in the exhaust gas.

[Problem that the invention seeks to solve]

In the conventional method, since the reaction is between a gas and a solid, the reaction of the nine reactants in the exhaust gas was completed the moment the reactants were blown into the gas, and the reaction rate was not very high after that.

In order to increase the reaction rate, the reactant must be moistened (
It has become clear that the reactant can be pulverized (the gas adsorbs well on the reactant) or pulverized (the contact area between the gas and the reactant is increased) and then blown into the exhaust gas. Note that the reactant injected into the exhaust gas mixes with the fly ash, but it is not thrown away as is, but is collected once (it is a high-temperature reactant when recovered) in a trench where the reaction efficiency deteriorates. used again.

From the above, the present invention provides an apparatus for cooling and humidifying a reactant and pulverizing it into fine powder.

[Means for solving problems]

The present invention mixes a granular temperature-reducing humidifying medium and dry powder,
A vibrating mixing screen device that separates the two on the downstream side; and a liquid temperature humidifying medium circulation supply device that drops the separated temperature-reduced humidifying medium into a water tank, drains it, and supplies it to the upstream side of the vibrating mixing screen device. The present invention is characterized in that it consists of a transport device for the separated humidified fine powder, and a dry powder constant supply device that supplies the dry powder to the upstream side of the vibrating mixing screen device.

[Effect]

Temperature reduction and humidification treatment of dry powder is performed by using a temperature reduction and humidification medium that is much larger than the powder particle size (for example, the size of a pachinko throne) and larger than the amount of powder (for example, an iron ball or a hole in the iron ball surface, Grooved) This is done by uniformly dispersing the water adhering to the surface into the powder using vibration mixing. Further, in order to perform vibrational mixing effectively, the powder is supplied between the layers of the temperature-reducing humidifying medium. To adjust the temperature and humidification, the powder is supplied in a fixed amount and the amount of circulation of the temperature and humidification medium is adjusted. Atomization of wet powder is
Due to the friction between the cooling humidifying medium and the action of the vibrating screen,
This is done by passing wet powder through a screen, while clogging is prevented by the rattling action of the medium on the screen surface. The wet fine powder that has passed through the screen is conveyed by airflow by an air ejector, and is used in the trench without forming into aggregates.

〔Example〕

Next, one embodiment of the device of the present invention will be described based on the drawings.

In Figures 1 and 2, a vibrating conveyor 01 and a vibrating screen 02 are combined, and the vibrating conveyor 01 has no dry reactant.
9, a processing section tn, a receiving section A, B, and C of the body 10, and a mixing section thereof. In the receiving parts A, B, and C, the dry reactant 09 is sandwiched between the layers of the processing medium, and in the mixing part, the trough width is expanded to reduce the layer thickness, and at the same time, the reactant 09 is mixed with the medium 10, and the medium surface is reacted. Coated with agent 09.

In the micro-movement screen section E, the temperature-reducing and humidifying reactant coated on the medium surface is peeled off into fine particles due to the vibration of NuClean and the collision of the medium 10 with each other.

Pass through screen 02.

The medium 10 is stripped of the reactant 09 and passed through the vibrating screen 02
The net is moved and discharged into the water tank 07.

A device 06 for quantitatively scraping the medium 10 is attached to the water tank 07, and the medium 10 that has been drained and retains only attached water is sandwiched with the dry reactant 09 in the flow section of the vibrating conveyor 024°. It is divided into two places and supplied.

The atomized wetness reactant is conveyed to a predetermined location by an air ejector.

This device has the following two configurations.

〔Effect of the invention〕

(Vibration mixing is effective because the dry reactants are fed between 1 liter of sterilized humidified media.

(2) Due to the friction between the temperature-reduced humidifying medium and the tapping action of the medium on the screen, clogging of the screen can be prevented and fine particles of the moisturizing reaction agent can be obtained.

(The wetting reactant can be continuously fed into the exhaust gas in the form of 3 granules.

[Brief explanation of the drawing]

1 and 2 are a longitudinal sectional elevational view and a plan view showing an embodiment of the apparatus of the present invention. 01... Perturbation conveyor, 02... Vibration screen. 03... Expansion joint, 04... Mixing part of fine moisture reactant and air, 05... Ejector. 06... Medium scraping device, 07... Water tank, 08...
... Dry reactant quantitative supply device, 09... Reactant.

Claims (1)

[Claims] A vibrating mixing screen device that mixes granular temperature-reduced humidifying medium and dry powder and separates the two on the downstream side; and a vibrating mixing screen device that mixes the granular temperature-reducing humidifying medium and dry powder and separates the two on the downstream side, and once drops the separated temperature-reducing humidifying medium into a water tank and then drains it. It consists of a temperature-reduced humidifying medium circulation supply device that supplies the upstream side of the device, a conveyance device for the separated humidified fine powder, and a dry powder quantitative supply device that supplies the dry powder to the upstream side of the vibrating mixing screen device. A humidifying and atomizing device for powder, which is characterized by: