Vacuum
creating systems 1) based on vacuum hydrocirculating units 2) based on steam ejectors |
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Jet compression units for flare and low-pressure gases recovery 1) based on two-phase jet devices 2) based on steam ejectors | ||
Jet
absorption gas cleaning units for hydrocarbons removal from breathing gases and oil and petroleum products gases recovery |
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Jet
devices ejectors and injectors for various purposes |
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Technovacuum Ltd. +7 (495) 956-76-21 +7 (499) 261-99-98 +7 (499) 267-82-03 Russia, 105082, Moscow B.Pochtovaya str., 26 "B", build.2, 5-th floor, office 1, room 11A |
Environmental
aspects of oil products use
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Cover (click to enlarge) |
ENVIRONMENTAL ASPECTS OF OIL PRODUCTS USE
(A. A. Abrosimov, A. A. Goureyev, Moscow, 1997)
New environmentally clean and economically efficient technological system of creating a vacuum in rectification columns was introduced on the cmde vacuum column BK-I of Atmospheric-vacuum fractionation unit AVT-3 at Moscow oil refinery in 1993. It works on the basis of vacuum device VHC-140-0.4 developed by «Technovacuum» Research and Production Association. Later on it was applied to other creating atmospheric-vacuum fractioation unit such as AVT-3, AVT-6 at the number of plants in FSU countries and replaced traditionally used steam ejectors. General diagram of a vacuum hydro-circulation unit is shown below:
1. Liquid-vapor jet unit
2. Flash drum 3. Heater exchange 4. Pump |
The liquid-vapor jet unit I manifolds vapor and cracking gases from the top of the column and creates a vacuum. The working liquid (vacuum gas oil or diesel fuel) injected into the jet unit, moves in circuit: jet unit I, flash drum 2, heater exchange 3, pump 4, jet unit 1. Flash drum is used for separating of gases from working liquid. The pump creates essential pressure. The heater exchange takes away excessive heat duty created by energy dissipation in circuit. New vacuum creating system allows:
The economic effect of introduction of new vacuum creating system instead of steam ejectors is 750000 - 1000000 $ per year. The best economic effect is achieved by low hydraulic pressure drop of vacuum tower internals.