Strips with

For strips with it 1, up to now the NSBA has been limited to M = 2 ansatze. Thence 

The variational parameters are submitted to translational symmetry restrictions and are assumed to be different when associated to spin-flips on non-equivalent bonds. Several conjugated polymers and square-lattice strips have been treated so far. 

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Compositional control ia suspension systems can be achieved with a corrected batch process. A suspension process has been described where styrene monomer is continuously added until 75—85% conversion, and then the excess acrylonittile monomer is removed by stripping with an iaert gas... 

Steps. Thermal-swing cycles have at least two steps, adsorption and heating. A cooling step is also normally used after the heating step. A portion of the feed or product stream can be utilized for heating, or an independent fluid can be used. Easily condensable contaminants may be regenerated with noncondensable gases and recovered by condensation. Water-iminiscible solvents are stripped with steam, which may be condensed and separated from the solvent by decantation. Fuel and/or air may be used when the impurities are to be burned or incinerated. 

The component C in the separated extract from the stage contact shown in Eigure 1 may be separated from the solvent B by distillation (qv), evaporation (qv), or other means, allowing solvent B to be reused for further extraction. Alternatively, the extract can be subjected to back-extraction (stripping) with solvent A under different conditions, eg, a different temperature again, the stripped solvent B can be reused for further extraction. Solvent recovery (qv) is an important factor in the economics of industrial extraction processes. 

A special coil configuration is used to heat thin strips of metal that caimot be heated efficiently with a coil that encircles the load, as the strip thickness is small compared to the depth of penetration. The transverse flux induction coil is positioned on either side of a strip to produce a uniformly heated strip with good efficiency in a much smaller space than conventional radiant or convective strip heating furnaces (6). 

Owing to the cycHc nature of the TBRC operation, waste heat recovery from the off-gases is not practical and the SO2 content of the gas varies with the converter cycle. In order to supply a relatively uniform flow and strength SO2 gas to a sulfuric acid plant, a system has been installed at RonnskAr whereby the SO2 from fluctuating smelter gases is partially absorbed in water. During smelter gas intermption, SO2 is stripped with air and the concentrated gas deflvered to the acid plant. 

Miscellaneous Processes. Metal strip for cladding can be produced by cold pressing metal powder into alow density green strip, foUowed by sintering to compact the powder. AHoy powders can be made into strip, along with specialized strip with one powder bonded to a different powder on the opposite side. 

Another solvent extraction scheme uses the mixed anhydrous chlorides from a chlorination process as the feed (28). The chlorides, which are mostly of niobium, tantalum, and iron, are dissolved in an organic phase and are extracted with 12 Ai hydrochloric acid. The best separation occurs from a mixture of MIBK and diisobutyl ketone (DIBK). The tantalum transfers to the hydrochloric acid leaving the niobium and iron, the DIBK enhancing the separation factor in the organic phase. Niobium and iron are stripped with hot 14—20 wt % H2SO4 which is boiled to precipitate niobic acid, leaving the iron in solution. 

A significant concern in all nitration plants using mixed acids centers on the disposal method or use for the waste acids. They are sometimes employed for production of superphosphate ferti1i2ers. Processes have also been developed to reconcentrate and recycle the acid. The waste acid is frequently first stripped with steam to remove unreacted HNO and NO. Water is then removed by low pressure evapori2ation or vacuum distillation. 

Many older finishes can be removed with single solvents or blends of petroleum solvents and oxygenates. Varnish can be removed with mineral spirits, shellac can be stripped with alcohols, and lacquers can be removed with blends of acetates and alcohols (lacquer thinners). The removal mechanism is one of dissolving the coating, then washing the surface or wiping away the finish. This method is often used to reamalgamate or liquefy old finishes on antique items of furniture. 

Raffinate acid from the first cycle, containing approximately 7 to 14 g/L U Og is then reoxidized and re-extracted in the second, purification cycle using a solvent containing 0.3 Af D2EHPA and 0.075 AfTOPO. The loaded solvent is washed with iron-free acid to remove iron and then with water to remove extracted and entrained acid. The solvent is stripped with ammonium carbonate [506-87-6] to yield ammonium uranyl tricarbonate [18077-77-5] which is subsequendy calcined to U Og (yellow cake). The stripped solvent is regenerated with mineral acid before recycling (39). 

Strip is produced as wide as 2 m and in thicknesses as low as 0.1 mm in regular mills. FoU in thicknesses of 0.025 mm or less is produced in special mills. To obtain strip with a bright surface, high ductUity, and low hardness, finish rolling is performed hot at 120—150°C. 

A typical feed to a commercial process is a refinery stream or a steam cracker B—B stream (a stream from which butadiene has been removed by extraction and isobutylene by chemical reaction). The B—B stream is a mixture of 1-butene, 2-butene, butane, and isobutane. This feed is extracted with 75—85% sulfuric acid at 35—50°C to yield butyl hydrogen sulfate. This ester is diluted with water and stripped with steam to yield the alcohol. Both 1-butene and 2-butene give j -butyl alcohol. The sulfuric acid is generally concentrated and recycled (109) (see Butyl alcohols). 

Recovery Process. Boron values are recovered from brine of Seades Lake by North American Chemicals Corp. In one process the brine is heated to remove some water and burkeite. The remaining brine is cooled to remove potassium chloride. This cooled brine is then transferred to another crystallizer where borax pentahydrate, Na2B40y 5H20, precipitates (18). In a separate process, boron is removed by Hquid—Hquid extraction followed by stripping with dilute sulfuric acid (19). Evaporator-crystallizers are used to recover boric acid [10043-35-3] H BO. In a third process, borax is recovered by refrigerating a carbonated brine. 

Dichlorine monoxide can also be prepared from concentrated HOCl solutions by vacuum distillation (55), by stripping with air (56,57), and by treatment with anhydrous Ca(N02)2 (58). It can also be prepared by treatment of aqueous HOCl or Ca(OCl)2, mixed with (C4H20)2P04 and CCl, with concentrated sulfuric acid (59,60). 

First procedure consists of several stages. 11-molybdo-bismuthphosphate (MBP) is formed and extracted with butyl acetate, stripped with ammonia or acetate buffer solution and determined in aqueous solution using reaction of MBP with Astro Floxine (AF) or other polymethine dyes. Full separation from molybdate excess is not necessary in this procedure as spectiaim of lA differs considerable from dye spectiaim. Therefore sepai ation is simplified and used only as preconcentration step. Concentration factor 50 and good reproducibility make possible determination of low P(V) concentrations at 10 mol/1 level and lower. 

The spent catalyst is withdrawn from the bottom of the reactor and stripped with steam to vaporize the hydrocarbons remaining on the surface. Stripping also removes most of the hydrocarbon vapors which are entrained between the particles of catalyst. Without stripping, hydrocarbon products would be carried to the regenerator and needlessly burned consuming much of the regeneration air, and decreasing yield of useful products. 

For the extension to two dimensions we consider a square lattice with nearest-neighbor interactions on a strip with sites in one direction and M sites in the second so that, with cyclic boundary conditions in the second dimension as well, we get a toroidal lattice with of microstates. The occupation numbers at site i in the 1-D case now become a set = ( ,i, /25 5 /m) of occupation numbers of M sites along the second dimension, and the transfer matrix elements are generalized to... 

Abr umen, n. (Brewing) clearing the kiln. Abraum-salze, n. pi. abraum salts (saline deposits overlying the rock salt at Stassfurt and elsewhere), -sprengung, /. stripping with explosives. -stoff, m. waste. 

A solution of 0.5 gram of the above ketone in 15 ml of 48% hydrobromic acid is refluxed for 1% hours and then concentrated in vacuo. The residue is dissolved in ethanol, toluene is added, the solution concentrated and the residue stripped with toluene to yield 3,4-di-hydroxyphenyl-2-pyridyl ketone hydrobromide, MP 246° to 247°C (decomposition). 

A gas processing plant selectively extracts ethylene and ethane from an incoming natural gas mixture stream. These two light hydrocarbons are absorbed in a heavy gasoline type absorber oil, and then stripped with open steam in an open tower. The system data are (see Figure 8-41) ... 

Li and Hsiao [143] provide a useful approach to the environmental problem of removing (by stripping) volatile organics from solution in a contaminated water stream by using fresh air as the stripping medium. It should be noted that a number of industrial firms perform this stripping with steam. The mass balance on the VOC component around the column (trayed or packed) as shown in Figure 8-55 uses the symbols of Reference 143. 

With the 3 in. pipe rams closed on the 3 in. drill pipe, open rotating head and pull the rotary bushings. While stripping with the pipe rams, raise the liner string (with the 3 in. drill pipe) until the 4 in. stripper rubber and the drill pipe joint it is on are above the rotary table. Replace the rotary table bushings and, using the rotary slips, remove this drill pipe Joint with the 4 in. stripper rubber (the 4 in. stripper rubber can be removed from this joint later). 

Remove the rotary bushings and, while stripping with the pipe rams, lower the liner string until the 3 in. stripper rubber is in the rotating head. Close the rotating head to secure the 3 in. stripper rubber. 

A copper strip with a mass of 2.00 g is dipped into a solution of AgN03. After some time has elapsed, the copper strip is coated with silver. The strip is removed from the solution, dried, and weighed. The coated strip has a mass of 4.18 g. What are the masses of copper and silver metals in tile strip (Hint Remember that the copper metal is being used up as silver metal forms.)... 

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