containg about 60% Hydrogen was fully utilised as primary reformer fuel. A cryogenic purge gas recovery unit is used to recover H2 from it which is recycled back convert it to Ammonia while the by-product tail gas from PGR unit is burnt as fuel in the primary reformer.
At times, extremely tall cylinder are constructed to perform purge gas recovery operations. Typically, thermocouples are installed to monitor inlet and outlet gas temperature of each bed of these cylinders.
What is a C02 Removal System?
In the modified system LT shift convertor effluent is colled in the condensate reboilers via heat exchange with CO2 Stripper water was condensate. Low pressure steam is generated and is utilized as motive steam for flash drum sjectors. The semilean solution is taken to a flash tank. The pressure is reduced in successive stage resulting in complete flashing of the steam water. A temperature drop of 121 °C to 111 °C is the result. The flashed stream is compressed by the motive stream in the ejectors & reintroduced in the stripper. This steam of flashed & motive steam is used to provide a portion of the required regeneration heat.
What is a Deep Hydrolyser?
Before incorportation of the scheme, the waste water containing about 4-5% of Ammonia & 0.3% of Urea is pumped by distillation tower feed pump to a waste water distillation column, where the ammonia stripper is off. The stripping vapours are regenerated by boiling the purified water in a re-boiler heated with steam. From the re-boiler the treated water was cooled and sent to battery limit. After incorporation of the hydrolyser the solution is preheated in a heat exchanger by means of solution coming from the hydrolyser itself. The hydrolysis heat is provided by HP steam. The solution leaving the hydrolyser after passing through the exchanger is sent to a distillation column. From the distillation column the water is cooled and then sent in the colling tower.
What is Energy Savings?
Accurate temperature measurement and a through analysis of operating conditions of a plant can improve efficiency and realize a cost savings in the hundreds if not millions of dollars yearly.
Burner Combustion Control
Boilers are often the principle steam or hot water generator system used in industrial plant or commercial heating applications. Burner combustion control generally includes one or a combination of the following methods: Total Heat Control
Regulation of excess air
Tubeskin thermocouple sensors are used to control advance warming of flue gases to provide a better heat transfer rate om boilers. This can result in substaintial saving on fuel.