Gases disposal

L stoichiometric reactions expensive produces HCl gas, disposal alcohol sulfation, dye 5, etc... 

For the tandem arrangement gas seal, a primary seal vent must be pro vided to vent the leakage across the process side seal. This vent ma> lie to flare or other suitable gas disposal point. The back pressure under nor mal conditions should be kept to a low value. A small amount of back pressure is recommended to keep a positive differential across the see ondaiy seal. Leakage measurement may be provided in the vent line to provide health monitoring of the primary seal. Unfortunately, the rotameter, which would be the obvious choice, should not be used because of its lack o reliability. If an orifice or needle valve is used to set the back pressure to the seal vent, pressure upstream of the restriction can be measured for a relative flow measurement. This type of reading does provide trend data that may be used to judge the seal s performance. 

Industrial waste(s) as biomass, 3 684 characterizing, 25 866-869 slaked lime in, 15 64 Industrial waste gas disposal, 10 77-78 Industrial waste treatment, slaked lime in, 15 64... 

This entire process must be carried out in a good hood with proper gas disposal. It is essential that the airflow be sufficient to carry away all the hydrogen cyanide. 

S. Liquid build up in fuel gas system. Plugged Instruments System shutdown Knock out drun V-2 Install desiccant dryer on instrunent gas (disposable type) ... 

Although strictly not an acid-gas disposal method, miscible flooding using carbon dioxide is, in some situations, an economic method of enhanced oil recovery. It shares many characteristics with its disposal cousin, particularly the surface equipment. 

Ho, K.T., J. McMullen, P. Boyle, O. Rojek, M. Forgo, T. Beatty, and H.L. Longworth. 1996. Subsurface acid gas disposal scheme in Wayne-Rosedale, Alberta. SPE Paper No. 35848. 

Lock, B.W., 1997. Acid gas disposal a field perspective. 76lh Annual GPA Convention, San. Antonio, TX. 

Clark, M.A., W.Y. Svrcek, W.D. Monnery, A.K.M. Jamaluddin, D.B. Bennion, F.B. Thomas, E. Wichert, A.E. Reed, and D.J. Johnson. 1998. Designing an optimized injection strategy for acid gas disposal without dehydration. 77th Annual GPAConv. Dallas, TX. 

It may seem obvious that some water must be present however, just having "some" water present is not enough. There must be enough water to form the hydrate phase. Ironically, if there is too much water present, a hydrate will not form either. If the hydrate former is present in too low a concentration, then it will merely dissolve in the water. Some acid gas disposal schemes take advantage of this property. 

The chemical engineering features of phosgene waste-gas disposal have been alluded to in Section 4.4.2. 

The upstream acid gas pre-extraction technique from IFF, called SFREX, offers a synergistic combination with the Elf Activated MDEA process in most applications for bulk H2S rich acid gas disposal projects. The substantial reduction of the acid gas removal and re-compression loads afforded by the SFREX step coupled with energy efficient flash procured Activated MDEA process achieves sour gas purification with bulk acid gas disposal very cost-effectively. 

For monitoring the hydrazine gas, disposable hydrazine permeation tubes were used. Figure 3.15 shows the measurement system assembled to determine the LOD of the sensor for hydrazine in air. The disposable-permeation tube was heated to 80°C by a Kin Tek C0395 Certification Oven. At that temperature, the emission rate of the hydrazine is 2,750 ng min. That emission rate corresponds to a concentration of 3.84 ppm in a carrier gas flowing at 500 seem. Since the emission rate decreases by about 50% for every 10°C decrease of the oven temperature, a hydrazine concentration of OOppb is obtained when the oven is at room temperature. 

Hot gas disposal. The reactor-cooling air is discharjged to tbe atmosphere froma2S0-ft stack located bn the site. Contaminated air from the laboratories is treated for removal of acidic vapors and then discharged into the atmosphere via the same stack. 

Gas disposal assembly tubing conducts the excess anesthetic gases from the interface to the gas disposal assembly. 

The gas disposal assembly conveys the excess gases to a point where they can be discharged safely into the atmosphere. Several methods in use include a nonrecirculating or recirculating ventilation system, a central vacuum system, a dedicated waste gas exhaust system, or a passive duct system. 

Determine the shortest and the safest route to the point of gas disposal. 

The discontinuously operated melting unit (see Fig. 4.13) consists of the following components melting tank (melting volumes up to 28 m ), insertion system, arch heating, electrical bottom heating, feeder, cooling system, waste gas disposal, and instrumentation and control with process computer. 

Sophisticated battery systems do already exist, such as the battery of a MAN-bus, which continuously checks its state by a number of well-tested peripheral devices, such as a centralized water refilling system, a centralized gas disposal, a temperature-controlling device, and a discharge/charge surveying apparatus. 

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