Discussion on the Recovery and Utilization of Oil and Gas in Storage Tanks
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Typical petrochemical companies have many large storage tanks, and the breathing action of these tanks results in the release of large amounts of hydrocarbons. In particular, the gases emitted from coking and diesel storage tanks have an unpleasant odor due to the presence of thiol compounds; this not only pollutes the environment but also hinders harmonious coexistence between the company and the local residents. Please share how your company approaches this issue, as well as any good methods and suggestions you have.
Combustion-based oil and gas recovery is recommended. Issue: In storage tanks for light contaminated oils in refineries, extensive efforts have been made to address the problem of unpleasant odors, using various methods; ultimately, we agreed on the principle of recycling and burning the substances, with adsorption used as a supplementary method. Method: 2000 m3 of dome tanks (or closed internal floating roof tanks) are evacuated using a water ring compressor; the liquid separation tank attached to the compressor can absorb the water vapor from the gas, which is then used as fuel in the plant’s furnace. If line sweeping is carried out inside the tank and a large amount of gas cannot be recovered in time, it will enter the adsorption tank and be vented. Focus: How to remove the condensed oil in the separation tank attached to the back side of the compressor, where to extract the heat from the compressor (with circulating water), and the setup and control of the adsorption tank. In short, the idea is there, but it’s not for design and manufacturing; it’s for assembling devices. Are there such manufacturers?
Firstly, I think this topic is very meaningful; it offers benefits both from the perspective of environmental protection and from the standpoint of energy savings and reduced consumption through the recovery of light hydrocarbons. The disposal of the materials after compression, separation, and recycling is easy to address; in my opinion, the challenge lies in determining how to carry out the recycling process. I wonder if there are any existing examples of this in practice? Under high ambient temperatures in summer, the vaporization rate of gasoline storage tanks should be an astonishing figure (especially given the current requirements regarding the saturated vapor pressure of gasoline). How can we ensure that hydrocarbons from the gas phase are recovered without air being drawn back into the system?
There are those that deal with oil and gas recovery in this area; you should first check the Internet to see if any such options exist
I have seen factories that recycle and burn waste in this way: a flared section is installed horizontally at the outlet of all vent valves, with pipes leading to a main pipeline. At the end of this main pipeline, a blower draws in the air-oil mixture and sends it into the steam generator for combustion; there is also a flame arrester at the point where the mixture enters the furnace.