Steam trap purpose

VALVES. A typical processing plant contains thousands of valves of many different sizes and shapes. Despite the variety in their design, however, all valves have a common primary purpose to slow down or stop the flow of a fluid. Some valves work best in on-or-off service, fully open or fully closed. Others are designed to throttle, to reduce the pressure and flow rate of a fluid. Still others permit flow in one direction only or only under certain conditions of temperature and pressure. A steam trap, which is a special form of valve, allows water and inert gas to pass through while holding back the steam. Finally, through accessory devices, valves can be made to control the temperature, pressure, liquid level, or other properties of a fluid at points remote from the valve itself. 

Steam Leaks from Steam Straps (Invisible) The purpose of a steam trap is to separate steam and condensate. It is designed in such a way that it opens to allow condensate to go through, but closes when presented with steam (hence trapped ). If operating properly, steam traps have negligible loss of steam. However, when steam traps stick in the open position, steam passes through the trap valve directly to the condensate system. There are many hundreds of steam traps all over the place in a site and many of them could operate in poor conditions if there is no proper maintenance in place. 

One of the roles of the matrix is to reduce the effect of metal contamination. Various matrices have been proposed to be suitable for this purpose. Magnesia-alumina has been found to be superior to most other inorganic oxides as a vanadium and nickel metal trap as well as increasing the resistance of the zeolite Y to steam deactivation [4]. 

In the assembly shown in Fig. 3 steam is passed into a 250-mL, round-bottomed flask through a section of 6-mm glass tubing fitted into a stillhead with a piece of 5-mm rubber tubing connected to a trap, which in turn is connected to the steam line. The trap serves two purposes it allows water, which is in the steam line, to be removed before it reaches the round-bottomed flask, and adjustment of the clamp on the hose at the bottom of the trap allows precise control of the steam flow. The stopper in the trap should be wired on, as shown, as a precaution. A bent adapter attached to a long condenser delivers the condensate into a 250-mL Erlenmeyer flask. Measure 50 mL of a 0.2% solution of anthracene in toluene into the 250-mL round-bottomed flask and add 100 mL of water. For an initial distillation to determine the boiling point and composition of the toluene-water azeotrope, fit the stillhead with a thermometer instead of the steam-inlet tube (see Fig. 5 in Chapter 5). Heat the mixture with a hot plate and sand bath or... 

No materials, except for biological materials that are to remain in a viable or intact state, are removed from the Biosafety/Laboratory Containment Level 4 laboratory unless they have been autoclaved or decontaminated before they leave the facility. Equipment or material that might be damaged by high temperature or steam may be decontaminated by gaseous vapor methods in an airlock or chamber designed for this purpose. Any drains in the floors contain traps filled with chemical disinfectant sewer vents and other ventilation lines contain HEPA filters. 

Operational Behavior of a Gas Dedusting System. Figure 5.22 shows the technical area of a major plant for the production of water gas from coal. The product gas is freed, to a large degree, of suspended dust particles by means of a dust separator and is transported towards the burner of a gas-fired steam boiler. The dust, via an intermediate dust bin, finally falls into the dust trap. For this purpose, valve (1) remains open most of the time while the installation is operational,... 

---