Stainless steel coil

For smaller and lower pressure plants, sampling steam and condensate to obtain reliable information may be a problem. Careful inspection may reveal a point in a line where a live steam sample can be directly obtained. But this point may prove to be of little value unless there is a means of connecting a temporary sample cooler (such as a stainless steel coil in a bucket of cold water). 

Toluene is continuously nitrated to mononitrotoluene in a cast-iron vessel, 1 m diameter, fitted with a propeller agitator 0.3 m diameter rotating at 2.5 Hz. The temperature is maintained at 310 K by circulating 0.5 kg/s cooling water through a stainless steel coil 25 mm o.d. and 22 mm i.d. wound in the form of a helix, 0.80 m in diameter. The conditions are such that the reacting material may be considered to have the same physical properties as 75 per cent sulphuric acid. If the mean water temperatute is 290 K, what is the overall coefficient of heat transfer ... 

Stainless steel coil and sheet stock is unloaded and stored outdoors under protective cover. As it is needed, the coil stock is moved indoors by a forklift to one of six automatic tube mills where the sides of unrolled metal strips are curled up to form a continuous, cylindrical pipe. The seam of the resulting pipe is fused in an electric in-line welding operation. An abrasive saw is used to cut the continuously formed pipe to specified lengths sections of poorly welded pipe are cut away. 

Calculate the total length of the helical stainless steel coil that should be installed for the fermentor to function adequately. 

Gas chromatography was originally a technique for nonpolar analytes, and for such analytes nonpolar packed columns prevailed. Packed columns are typically a glass or stainless steel coil, 1-5 m total length and 2-5 mm internal diameter, which is filled with the stationary phase, or a packing coated with the stationary phase. Early packed columns had low plate numbers and in the majority of instances separation could not be obtained on the basis of the differences in volatility alone. The solution was selective stationary phases, and in the 1960s there were more than 200 different stationary phases available (41). 

Pour cold water in the ultrasonic bath (30-50 kHz) half of its depth and switch it on. Observe the places of maximum agitation on the water surface to determine the horizontal X and Y coordinates of the energy maxima. Place a stainless steel coil connected to a cold water tap in the bath and circulate water. Adjust the vertical Z coordinate of the energy maximum by adding water slowly so as to obtain a geyser at the surface (ultrasonic fountain). 

If a nitrator is equipped only with a cooling or heating jacket, the ratio of the heat exchange area to the nitrator capacity depends on the latter. When the capacity is cubed the surface area is squared. Thus, when the dimensions of a nitrator are increased, the heat exchange area may no longer be adequate. Then, a stainless steel coil or a lead coil must be mounted inside the nitrator. 

The animals are housed in individual metabolic cages. For bile collection, they are attached to long swivelled PE-cannulas (0.75 x 1.45 mm). A stainless steel coil is used to protect the rats from gnawing on the tubing. For continuous collection of bile, the cannula can be connected to a fraction collector. 

Figure 3 shows a schematic view of a flow reactor. It is similar to the photochemical reactor previously described in [5] but the UV photolysis cell has been replaced by a 1 m. stainless steel coil in a heated oil bath. As before, FTIR is used to monitor the conversion and optimise the conversion of reactant to product. Using such a system (C5Me5)Mn(CO)2(C2H4) can be obtained in a high yield as in Scheme 1. We are now scaling up this miniature reactor to a technical scale, ultimately with the aim of carrying out solvent-free reactions on a kilogramme scale.

Understanding of the migration rates of metal elements in the coil walls has been utilized to create surface compositions that minimize coke formation. Stainless steel coils for thermal cracking have been exposed to gases with low oxidative potentials at temperatures up to 1200°C for about 50 hrs. ... 

Catalytic tests in the Oxydative Dehydrogenation (ODH) of methanol Kinetic runs were performed in a stainless steel tubular reactor with an internal diameter of 1cm, kept isothermal with a fluidized bed of sand. Liquid methanol was fed, by a syringe pump, into a vaporizer chamber kept at 200 °C and was then sent, after the addition of a stream of oxygen and helium, into a stainless steel coil kept at the same temperature of the reactor. 

Kappe et al. reported a direct aerobic oxidation of 2-benzylpyridines in a gas-liquid continuous-flow regime [34]. A standard two-feed approach was used. Pressurized air was mixed with the substrate liquid phase in a simple T-shaped mixing device (Figure 23.4). The liquid phase was pumped by the use of an HPLC pump. Pressurized air was monitored by a mass flow controller. The two-phase reaction mixture was pumped through a stainless steel coil (0.8 mm inner diameter, 120 m length) and heated with a standard GC oven. Due to... 

Stainless steel coils may recjuire solution annealing after forming to prevent springback" and alleviate high residual stresses. Solution heat treatment can be performed in a fixture or with the grooved mandrel to ensure dimensional stability. 

Prasad V, Chan RP, Faughnan ME (2004) Embolotherapy of pulmonary arteriovenous malformations efficacy of platinum versus stainless steel coils. J Vase Intervent Radiol 15(2 Pt 1) 153-160... 

Improvements were made to pushable fibered coils, including the introduction of platinum fibered 0.035-0.038 standard and 0.018 in microcoils [8, 9). These later developments, provided a softer and more MRI compatible coil but without the radial force of the original stainless steel coils. In Europe an Inconel coil, with excellent radial force, replaced the stainless steel coils and so high radial force and soft fibered platinum coils for vessel occlusion, became available in Europe. The Inconel, high radial force coil, is not yet available in the USA. 

For treatment of upper GIH, stainless steel coils and platinum microcoils were found to be more effective if combined with Gelfoam or PVA [7,87]. 

---