Absorbable containing

The absorbate containing the mixed ethyl sulfates is hydroly2ed with enough water to give an approximately 50—60% aqueous sulfuric acid solution. The hydrolysis mixture is separated in a stripping column to give dilute sulfuric acid bottoms and a gaseous alcohol—ether—water mixture overhead. The overhead mixture is washed with water or dilute sodium hydroxide and then purified by distillation (63,65,66,68,69). 

Explosives Shock-absorbing containers Varies Temperature control special container markings... 

Diglycolamine (DGA), is another amine solvent used in the Econamine process (Fig 1-2). Absorption of acid gases occurs in an absorber containing an aqueous solution of DGA, and the heated rich... 

In a Mdssbauer transmission experiment, the absorber containing the stable Mdssbauer isotope is placed between the source and the detector (cf. Fig. 2.6). For the absorber, we assume the same mean energy q between nuclear excited and ground states as for the source, but with an additional intrinsic shift A due to chemical influence. The absorption Une, or resonant absorption cross-section cr( ), has the same Lorentzian shape as the emission line and if we assume also the same half width , cr( ) can be expressed as ([1] in Chap. 1)... 

Mossbauer spectra are usually recorded in transmission geometry, whereby the sample, representing the absorber, contains the stable Mossbauer isotope, i.e., it is not radioactive. A scheme of a typical spectrometer setup is depicted in Fig. 3.1. The radioactive Mossbauer source is attached to the electro-mechanical velocity transducer, or Mossbauer drive, which is moved in a controlled manner for the modulation of the emitted y-radiation by the Doppler effect. The Mossbauer drive is powered by the electronic drive control unit according to a reference voltage (Fr), provided by the digital function generator. Most Mossbauer spectrometers are operated in constant-acceleration mode, in which the drive velocity is linearly swept up and down, either in a saw-tooth or in a triangular mode. In either case. 

Typical absorbers contain 50-700 mg cm of natural platinum. The observed experimental line widths in Pt (99 keV) spectra range from values close to the natural width (2F at (99 keV) = 16.28 mm s ) to 25 mm s. With respect to the line width, the 130 keV transition with a natural width of (130 keV) = 3.40 mm s seems to be more favorable for the study of hyperfine interaction in platinum compounds in practice, experimental line widths of 3.4 0.4 [328] and 3.5 0.7 mm s [329] have been measured. The considerably higher energy resulting in a much smaller recoiUess fraction and the lower probability for the population... 

Around 98 per cent of the MEK and alcohol can be considered to be absorbed in this unit, giving a 10 per cent w/w solution of MEK. The water feed to the absorber is recycled from the next unit, the extractor. The vent stream from the absorber, containing mainly hydrogen, is sent to a flare stack. 

Kato, M., K. Nakagawa, T. Ohashi, S. Yoshikawa, and K. Essaki, Carbon Dioxide Gas Absorbent Containing Lithium Silicate, U.S. Patent No. 6,387845 Bl, May 2002. 

Z-Sorb A process for removing hydrogen sulfide and other sulfur compounds from gas streams by absorption in a proprietary granular absorbent containing zinc oxide. The process can be operated at temperatures between 315 and 555°C. Chem. Eng. (N.Y.), 1998,105(2), 25. 

A determination of traces of low (Ci to C4) aliphatic amines in the atmosphere consists of passing air through an absorber containing phosphorous acid, derivatizing with m-toluyl chloride and end analysis by HPLC-UVD LOD 1-5 pmol of amine, corresponding to concentrations lower than 0.1 pg/m3 of air, in a 300 L sample232. 

In the iodate detection system (ASTM D1552), the sample is burned in a stream of oxygen at a sufficiently high temperature to convert about 97% by weight of the sulfur to sulfur dioxide. The combustion products are passed into an absorber containing an acidic solution of potassium iodide and starch indicator. A faint blue color is developed in the absorber solution by the addition of standard potassium iodate solution. As combustion proceeds, bleaching the blue color, more iodate is added. The sulfur content of the sample is calculated from the amount of standard iodate consumed during the combustion. 

Infrared absorbers containing a polymethine component, (III), were prepared by Iwai et al. (5) and used in photographic printing plate compositions. 

Tile partially purilied synthesis gas leaves the C02 absorber containing approximately 0.1% CO2 and 0.5% CO. This gas is preheated at the methanator inlet by heat exchange with the synthesis-gas compressor interstage cooler and the primary-shift converter effluent and reacted over a nickel oxide catalyst bed in the methanator. The methanation reactions are highly exothermic and are equilibrium favored by low temperatures and high pressures. 

The liberated bromine is carried from the tower by means of a stream of air and into an absorber containing sodium carbonate solution. By reaction with sodium carbonate, the bromine is converted to sodium bromide and sodium bromate ... 

Lean gas Gas leaving the absorber, containing the inerts and little or no solute. 

Rich gas Gas entering the absorber, containing both the inerts and solutes. 

The nitric acid produced in the absorber contains dissolved nitrogen oxides and is then bleached by the secondary air. 

Absorption Abatement or extended absorption refers to modifications that involve the addition of increased absorption capacity or optimization of the existing absorption system to oxidize and react the nitrogen oxides with water to form acid.. Tail gases are passed through an absorber containing either water or an aqueous solution of ammonia, urea or sodium hydroxide. When water is used as the absorbent, the resultant weak acid is recycled. This increases nitric acid yields by 1% to 3%. When other absorbents are used, the recovered NOx is typically consumed in the production of nitrogen solutions for fertilizer use. If sodium hydroxide is the absorbent, pure sodium nitrite and sodium nitrate may be recovered91,104. 

The waste gas that leaves the HCN absorber contains enough hydrogen and carbon monoxide to give it a heating value that makes it a valuable fuel. It is usually used to displace other fuel in boilers129. 

The SCOT process provides an efficient way of removing sulphur-containing compounds from the tail gas of a conventional Claus reactor. The tail gas is heated to about 300°C and fed to a hydrogenation reactor, where all sulphur compounds in the gas are converted to H2S. Almost all H2S is removed in an absorber/stripper combination and fed back to the Claus plant. The off-gas from the absorber contains virtually no sulphur compounds (values as low as 500 ppm are reported [2]) and is incinerated in the Claus incinerator. A schematic diagram of the SCOT process is provided in Figure 2. 

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