Cracker stars

Large exhibition rockets are equipped with heads which contain stars of various kinds (see below), parachutes, crackers (see grasshoppers), serpents (compare Figure 23), and so on. In these,... 

Gunpowder for fireworks is used in two forms, meal powder and grain powder. Meal powder is a fine black dust and is employed In all cases of mixing. Grain powder is of three kinds, F, FF, and FFF—fine, double fine and treble fine. FFF is best for crackers, simply tiecause it runs rapidly down the pipes for driving stars, shells, etc, F will be sufficient... 

Tip Cracker A flower which cracks at the end of each star. 

This shell is also a kind of Warimono. Each of the main stars contains a cracker as the core. When the flower has been developed in the sky, the stars crack as the burning ceases and they make a great deal of /... 

These conaiSI of a 6 miae case containing a bag filled with colored Stars and Japanese or Willow Tree Aars. EleAiic Spreader Stan with crackers also make a handsome mine The various effects are almost unlimited and the genius of the artificer wiD suggest other combi-ngdona... 

This shell is also a kind of Warimono. Each of the main stars contains a cracker as the core. When the flower has been developed in the sky, the stars crack as the burning ceases and they make a great deal of noise. For the noise composition, red explosive is used because it can produce a loud noise with only a small amount of composition. The explosive in the wet state is rolled with a sheet of Kozo paper into a cord, which is cut in small pieces while it is still wet. The pieces are coated immediately with another safer composition. These are finished by pasting with composition as with ordinary main stars. 

Figure 3.35 shows a process flow diagram of Phillips MTBE/ETBE/TAME process. This process is often called the Phillips Etherification Process. The reaction section (1,2) which receives methanol and isobutene concentrate, contains an ion exchange resin. The isobutene concentrate may be mixed olefins from a Fluid Catalytic Cracking Unit (FCCU) or steam cracker or from the on-purpose dehydration of isobutene (Phillips STAR process). High purity MTBE (99 wt%) is removed as a bottoms product from the MTBE fractionator (3). AH of the unreacted methanol is taken overhead, sent to a methanol... 

Sky-rockets diner In their terminal display, which Is dependent upon the garniutre contained in a pot at the head of the case, and which may consist of stars, golden showers serpents, in-tfions, vetiUes petards, saxons, crackers. Sec Ure, I. 729, 730... 

Propylene is one of the most important feedstocks for the petrochemical industry and can be used in the production of a wide variety of products such as polypropylene, acrylonitrile, cumene, oxo-alcohols, propylene oxide, acrylic acid, isopropyl alcohol, etc. (Weissermel and Arpe, 2007). Nowadays, the propylene demand is increasing faster than the ethylene demand. The expected growth of propylene with respect to ethylene exceeds the ratio obtained from steam crackers because a portion of steam crackers is now using inexpensive ethane feedstock (Bricker, 2012 Sanfilippo and Miracca, 2006). The dehydrogenation of propane (DHP) offers an option to capture the marginal, additional capacity needed to compensate for the imbalance (Buyanov and Pakhomov, 2001). A number of technologies are commercially available for the DHP to propylene for example, Oleflex, Catofin, Star, PDH, and FBD (Abdullah, 2007 Eisele and KiUpack, 2000). From 2011, several DHP plants have been planned to be built in China with the total capacity exceeding 6 miUion tons per year (Zhu, 2012). 

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