Liquid wastes process condensate

Analyses showed the primary solid product, collected in the lift exit cyclone, was indeed sodium carbonate, as expected. The evaporated liquid waste was condensed and analyzed following processing and determined to be nonhazardous by Federal and State standards. Inspection of spheres removed from the process following shutdown showed no signs of sticking, tacking or agglomeration. 

Liquid wastes from processing of shale oil. The liquids include condensate water from retorting and waste water from washing ... 

Aqueous wastes. High-level aqueous wastes HAW (stream 5) and lAW (stream 59) are concentrated by evaporation. The condensate, containing recovered nitric acid, is recycled. Processes for converting the concentrated, unneutralized liquid wastes to solid suitable for long-term storage have not been finalized. 

This process is used for elimination of particularly harmful liquid wastes and sludges, such as black liquors from pulp production, and acid condensates from oil processing factories. It is carried out in a dry or wet mode. 

Hydrocarbons Barometric condensers, blow-through processes, boilers, regenerators of catalysts, compressors, cooling towers, flames, heaters, containers, pumps, tanks, vacuum nozzles, and equipment for treating liquid wastes... 

Scrub solutions used for off-gas cooling or cleanup, together with all condensates and purge streams, should be collected, treated and returned to the scrubbing process. There shall be no direct pathway for active liquids to the environment. The scrub solution system blowdown should be treated by a radioactive liquid waste treatment system. In some instances the blowdown may be processed (e.g. dried) in the incineration system. 

Another example in the polymers industry is illustrated in Figure 17, which is a process aimed at the batch drying of waste residue with solvent recovery. In this application liquid or viscous waste solutions are pumped into a batch dryer where they are dried under vacuum to a solid granular residue. Vaporized water and solvent are recovered by condensation and then separated by gravity. The process scheme is flexible, offering a range of temperatures and vacuum levels for treating... 

Waste Heat Boiler Produces steam from condensate or boiler feed water by removal of sensible heat from high temperature level process or waste gas streams. (Sometimes liquid streams serve this function.)... 

The plastic samples used in this study were palletized to a form of 2.8 3.2min in diameter. The molecular weights of LDPE and HDPE were 196,000 and 416,000, respectively. The waste catalysts used as a fine powder form. The ZSM-5 was used a petroleum refinement process and the RFCC was used in a naphtha cracking process. The BET surface area of ZSM-5 was 239.6 m /g, whose micropore and mesopore areas were 226.2 m /g and 13.4 m /g, respectively. For the RFCC, the BET surface area was 124.5 m /g, and micropore and mesopore areas were 85.6 m /g and 38.89 m /g, respectively. The experimental conditions applied are as follows the amount of reactant and catalyst are 125 g and 1.25-6.25 g, respectively. The flow rate of nitrogen stream is 40 cc/min, and the reaction temperature and heating rate are 300-500 C and 5 C/ min, respectively. Gas products were vented after cooling by condenser to -5 °C. Liquid products were collected in a reservoir over a period of... 

In this new process the H2S/SO2 reaction is carried out in liquid sulfur at pressures in excess of five atmospheres. Typical Claus catalysts are still employed but temperatures are lower (below the dewpoint of sulfur) and thus the redox reaction occurs in the liquid sulfur phase at the surface of the catalyst. Vapor losses due to sulfur mist entrainment are reduced and interstage condensers in the tradition Claus train are not required thus avoiding wasteful heat transfer problems. The authors claim that overall sulfur recoveries in excess of 99% are possible without the use of tail gas clean up units. 

---