Compared with uniform perforation compound trays, non-uniform perforation compound trays have greater turndown ratio by 20%-60%, larger gas capacity by 20%-80%, and larger liquid capacity by about 70%.
The experimental results showed that CRSV is an excellent valve tray with high turndown ratio and stable operation. Compared with F1 valve,CRSV pressure drop is lowed by 10%-20%,entrainment lowed by 20% and weeping lowered by 15%-20%.
Two-stage membrane separation unit of TBM medium-low pressure modules is installed to process the gas stream at a capacity of 11,000 Nm3/h with a turndown ratio of 30%-130% . The design on-stream time is 8 ,400 h/yr, hydrogen production is 6,798 Nm3/h with H2 purity greater than 91% and H2 recovery rate higher than 85% .
Compared with F_1 type valve tray under the same condition, RCH decreases by 250-300Pa in pressure drop of each tray and increases by 20%-25% in capacity; meanwhile, its turndown ratio increases by 15% and tray efficiency increases by 5%-10%. Consequently, RCH is proven to be a better valve tray in terms of comprehensive technology.
After revamping, processing capacity has been expanded to 5 500 b/d and operation flexibility increased greatly with the good product quality. Solvent consumption has reduced from 16.1 kg/t to 1.67 kg/t, together with the energy consumption from 2 449.3 MJ/t to 1172.3MJ/t. Annual economic benefits have reached 3 000×10 4 RMB yuan.
The results showed that the system operated stably,separation efficiency reached 99.998%,catalyst consumption in regenerator decreased below 0.5 kg/t from 0.3 kg/t,overall pressure drop decreased from 6.8 kPa to 5.5 kPa; this system had better operation flexibility and adaptability.
To improve the reliability of supplying gas stably to Zhongwu Pipeline,two paratactic sets of devices are designed,each of which has the handling ability of 3 million m3 natural gas per day with operation flexibility of 50%-100%.
It has advantages of strong adaptability to feedstocks,high blending ratio of residue,good product slate,great operation flexibility,high quality fluidization of catalyst,strong resistance to failure and low consumption.
Properly designed inner catalyst transfer tube,fluidized steam and lifting steam can increase the circulating amount of catalyst and the yield of light oil,can mitigate fluctuations of the system pressure,catalyst density and vibrations,can reduce coking in equipment and enhance the operating flexibility of the unit.
Compared to the F1 circular floating valve tray, the HTV boat shape floating valve tray is characterized by great operating flexibility, strong adaptability, high fractionating efficien cy, easiness in manufacture and convenience in maintenance, being suitable for large-scale fractionator and capacity expansion of the fractionator.
The home made cyclone separators in acrylonitrile reactors offered a wide range of operation elasticity and good stability, their pressure drops were lower than 7kPa, the loss of catalyst in acrylonitrile/t was lower than 0.4kg, the production requirements of acrylonitrile could be satisfied.
At present the industrialization production epoxypropane method mainly is altogether the oxo-process and the chlorhydrin law, Our country produces the epoxypropane the method is the most classical chlorhydrin law, This method merit obvious, the flow short, the craft mature, the operation elasticity big, the selectivity good, the production rate is high, in addition, is lax to the raw material propylene purity request, the construction invests few, production relative security;
After revamping the capacity of the main fractionating tower was increased, its operation elasticity was enhanced, its pressure drop was reduced, its separation efficiency was improved and its energy consumption was reduced.
An energy conservation scheme was proposed and optimal dispatch and management of the reformed steam system was realized. After the scheme put into effect, the operation elasticity was recovered and 8t/h high pressure steam was saved.
This way, operating flexibility could be verified in relation to the volume of treated wastewater at each cycle and the cycle time for the same organic load.
The framework presented provides insight into key strategic factors that affect the management of process operations, operating flexibility issues and their resulting economic value.
Past research indicates that the increased operating flexibility associated with general-purpose fixtures may be a key to the efficient scheduling of even those FMSs dedicated to producing a small number of part types over a known planning horizon.
All exhibit relatively strong aspects of operating flexibility, either production or innovation.
At this point we must assume that the several building blocks of an emotionally enabled Agent have a reasonable operating flexibility.