Dust cleaning

Detect the condition of and operate filters and dust-cleaning devices. Receive and register status and alarm messages. 

Dustblock formula actually repels dust. Cleaning, dusting, and polishing are all completed in seconds. You ve heard the claims of various furniture polishes. Is there actually a chemical basis to dusting ... 

Furniture polishes are used to dust, clean, shine, and protect wood surfaces. The ingredients within the polish formulation confer these favorable attributes. In particular, to act as a dust repellent, the polish contains antistatic ingredients, that is, hydrocarbon substances that are not prone to static electricity and therefore do not attract dust. Silicone oil 1,2 and lemon oil are typical antistatic ingredients. 

Wet methods Use wet methods to minimize contamination with dusts. Clean vessels chemically vs. sandblasting. Use water sprays for cleaning. Clean areas frequently. Use water sprays to shield trenches or pump seals. 

On still another front, the industry stepped up its installation of dust cleaning equipment. Expenditures for such installations amounted to hundreds of millions of dollars(5). All... 

During this checking operation the apparatus should not only be inspected but it should also be dusted, cleaned and polished if necessary. If proper care is taken the life of the apparatus will increase. For proper upkeep and maintenance the following points be kept in mind. 

Salicylic Acid Gloves, goggles, respirator for dust, clean body-covering clothing. Move to fresh air. Wash with soap and water. Rush with water for at least 15 minutes. 

Fire protection — Wear flame-resistant clothing. Have someone be your fire watcher when you weld. Move all combustible material at least 35 feet from the work area and try to move away from combustible materials, or cover them with fire resistant material. Don t weld in atmospheres containing dangerously reactive or flammable gases, vapors, liquids, or dust. Clean and purge containers which may have held combustible material before applying heat. Get a hot work permit and follow its safety precautions. 

Is combustible dust cleaned up with a vacuum system to prevent suspension of dust particles in the environment ... 

Consider two cyclones in a series for dust cleaning of air, such that the dust collected in the underflow of cyclone 1 is withdrawn, along with a small amount of air, and introduced as feed to the smaller cyclone 2, whose overflow gas stream containing some dust is recycled to the fresh feed air stream entering cyclone 1. Assume that the grade efficiency functions for cyclones 1 and 2 are given, respectively, by (Van der Kolk, 1961)... 

After cleaning to remove coarse material, ie, cobs, and fines (broken com, dust, etc), the com is steeped in a sulfurous acid solution to soften the com and render the starch granules separable from the protein matrix that envelopes them. About 7% of the kernel s dry substance is leached out during this step, forming protein-rich steep-water, a valuable feed ingredient and fermentation adjunct. 

Some empirical equations to predict cyclone pressure drop have been proposed (165,166). One (166) rehably predicts pressure drop under clean air flow for a cyclone having the API model dimensions. Somewhat surprisingly, pressure drop decreases with increasing dust loading. One reasonable explanation for this phenomenon is that dust particles approaching the cyclone wall break up the boundary layer film (much like spoiler knobs on an airplane wing) and reduce drag forces. 

The term essentially a drag coefficient for the dust cake particles, should be a function of the median particle size and particle size distribution, the particle shape, and the packing density. Experimental data are the only reflable source for predicting cake resistance to flow. Bag filters are often selected for some desired maximum pressure drop (500—1750 Pa = 3.75-13 mm Hg) and the cleaning interval is then set to limit pressure drop to a chosen maximum value. 

A low incidence of explosions has been reported when precipitation is effected without a nucleating agent and during the screening process. Precautions must be taken during detonator loading to prevent dusting and to maintain a scmpulously clean operation. 

Conserva.tlon, The objectives ia the treatment of stone objects are primarily cleaning, stabilization, consoHdation, repair, and restoration (132—135). Cleaning can vary from a light dusting to the removal of stubborn grime and stains with solvents and detergents. The latter can be appHed usiag a poultice method to iacrease the efficiency with which the extraneous material is removed from below the surface of the stone. 

---