Methods and systems for inline mixing of hydrocarbon liquids

An in-line fluid mixing system positioned at a tank farm to admix hydrocarbon liquids from a plurality of tanks into a single pipeline, the in-line fluid mixing system comprising:

• a first tank containing a first fluid therein;
• a first output pipe connected to the first tank proximate a bottom portion thereof, the first output pipe to transport a flow of the first fluid from the first tank at a first pressure therethrough, the first pressure resulting from force of gravity on the first fluid;
• a second tank containing a second fluid therein;
• a second output pipe connected to the second tank proximate a bottom portion thereof, the second output pipe to transport a flow of the second fluid from the second tank at a second pressure therethrough;
• a third tank containing a third fluid therein;
• a third output pipe connected to the third tank proximate a bottom portion thereof, the third output pipe to transport a flow of the third fluid from the third tank at a third pressure therethrough;
• a second tank pump connected to the second output pipe to increase pressure of the flow of the second fluid from the second pressure to a second pump pressure at an outlet of the second tank pump;
• a second tank mixing pipe connected to the outlet of the second tank pump to transport the flow of the second fluid therethrough;
• a third tank pump connected to the third output pipe to increase pressure of the flow of the third fluid from the third pressure to a third pump pressure at an outlet of the third tank pump;
• a third tank mixing pipe connected to the outlet of the third tank pump to transport the flow of the third fluid therethrough;
• a blended fluid pipe connected to and in fluid communication with the first output pipe, the second tank mixing pipe, and the third tank mixing pipe to admix the flow of the first fluid at the first pressure, the flow of the second fluid, and the flow of the third fluid into a blended fluid flow;
• a second tank flow meter connected to the second tank mixing pipe and to measure flow rate of the flow of the second fluid between the second tank pump and the blended fluid pipe;
• a second tank flow control valve connected to the second tank mixing pipe between the second tank flow meter and the blended fluid pipe to control the flow of the second fluid between the second pump and the blended fluid pipe;
• a third tank flow meter connected to the third tank mixing pipe and to measure flow rate of the flow of the third fluid between the third tank pump and the blended fluid pipe;
• and
• a third tank flow control valve connected to the third tank mixing pipe between the third tank flow meter and the blended fluid pipe to control the flow of the third fluid between the third tank pump and the blended fluid pipe.

An in-line fluid mixing system to admix hydrocarbon liquids from a plurality of tanks into a single pipeline, the in-line fluid mixing system comprising:

• a first tank containing a first fluid therein;
• a first output pipe connected to the first tank proximate a bottom portion thereof, the first output pipe in fluid communication with the first fluid to transport a flow of the first fluid from the first tank through the first output pipe at a first pressure, the first pressure resulting from force of gravity on the first fluid;
• a second tank containing a second fluid therein;
• a second output pipe connected to the second tank proximate a bottom portion thereof, the second output pipe in fluid communication with the second fluid to transport a flow of the second fluid from the second tank through the second output pipe at a second pressure;
• a pump having an inlet and an outlet, the inlet of the pump connected to the second output pipe to increase pressure of the flow of the second fluid from the second pressure to a pump pressure at the outlet;
• a mixing pipe connected to the outlet of the pump to transport the flow of the second fluid therethrough;
• a blended fluid pipe connected to and in fluid communication with the first output pipe and the mixing pipe to admix the flow of first fluid at the first pressure and the flow of second fluid into a blended fluid flow;
• and
• a flow control valve connected to the mixing pipe and positioned between the pump and the mixing pipe to control flow of the second fluid between the pump and the mixing pipe.

An in-line fluid mixing system to admix hydrocarbon liquids from a plurality of tanks into a single pipeline, the in-line fluid mixing system comprising:

• one or more first tanks each containing a first fluid therein;
• one or more first output pipes connected to the one or more first tanks and in fluid communication with the first fluid to transport a flow of the first fluid from the one or more first tanks through the one or more first output pipes at a first pressure, the first pressure resulting from force of gravity on the first fluid;
• one or more second tanks each containing a second fluid therein;
• one or more second output pipes connected to the one or more second tanks proximate a bottom portion thereof, the one or more second output pipes in fluid communication with the second fluid to transport a flow of the second fluid from the one or more second tanks through the one or more second output pipes at a second pressure;
• one or more pumps each having an inlet and an outlet, the inlet of each of the one or more pumps connected to the one or more second output pipes to increase pressure of the flow of the second fluid from the second pressure to a pump pressure at the outlet;
• one or more mixing pipes connected to the outlet of the one or more pumps to transport the flow of the second fluid therethrough;
• one or more blended fluid pipes connected to and in fluid communication with the one or more first output pipes and the one or more mixing pipes to admix the flow of first fluid at the first pressure and the flow of second fluid into a blended fluid flow;
• one or more flow control valves connected to the one or more mixing pipes and positioned between the one or more pumps and the one or more mixing pipes to control flow of the second fluid between the one or more pumps and the one or more mixing pipes.