System for coprocessing oil drilling waste
AssigneesCarlos Torres Padilla, Jesús González Torres, Gabriel Mandujano García, Néstor Echavarri Franco, Efrén Acevedo Martinez
InventorsNestor Ivan Echavarri Franco, Efren Acevedo Martinez
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Abstract
A co-processing that includes converting oil drilling waste into a material with technical characteristics that can be used as fuel or alternative raw material for a specific petrochemical process. In the co-process, the components that make up the waste such as solid, oil, and water are recovered. The co-process is a self-sustaining process, reducing gas emissions into the atmosphere, accompanied by savings in the operating cost of the process.
Claims19
A co-processing system for oil drilling waste comprising a mixture of water, oil and solids, wherein the co-processing system is configured to pass oil drilling waste through the following components to recover solids, water, and drilling fluids, the co-processing system comprising:
- a. an analyzer configured to analyze the oil drilling waste fed into the co-processing system;
- b. solids control equipment configured to eliminate solid waste from the oil drilling waste comprising the mixture of water, oil, and solids;
- c. a magnetic particle separator configured to separate metallic object(s) from the oil drilling waste;
- d. a mechanical separator configured to precondition the solid waste and separated metallic object(s);
- e. a variable speed mixer configured to receive the solid waste and metallic object(s) separated by the mechanical separator, wherein the variable speed mixer is further configured to receive a surfactant and mix to achieve a surfactant effect;
- f. a thermal paddle dryer configured to dry solids obtained from the variable speed mixer, wherein a top of the thermal paddle dryer comprises an outlet configured to output evaporated fluids;
- g. a hydration system comprising a shear paddle configured to hydrate the solids obtained from the thermal paddle dryer;
- h. a thermal treatment device configured to heat solids obtained from the hydration system;
- i. a dual cyclone arranged in parallel and configured to separate solid particles obtained from the thermal paddle dryer;
- j. a first heat exchanger and a second heat exchanger configured to thermally shock clean gases obtained from the dual cyclone;
- k. a first separator configured to capture micrometric particles by an effect of condensing alkali salts;
- l. wherein the first heat exchanger and a second separator are configured to recover a middle fraction hydrocarbon condensate and water;
- m. wherein the second heat exchanger and a third separator are configured to recover a light hydrocarbon condensate and water;
- and
- n. a catalytic oxidation system configured to burn non-condensed gases.
A co-processing system for oil drilling waste comprising a mixture of water, oil and solids, wherein the system is configured to perform a method on oil drilling waste to recover solids, water, and drilling fluids, the method comprising:
- a. analyzing oil drilling waste fed into the co-processing system;
- b. eliminating solid waste and separating metallic object(s) from the oil drilling waste comprising the mixture of water, oil, and solids;
- c. preconditioning the solid waste and separated metallic object(s) in a mechanical separator;
- d. mixing the preconditioned solid waste and metallic object(s) in a variable speed mixer configured to receive the solid waste and metallic object(s) separated by the mechanical separator, wherein the mixing is performed with an added surfactant to achieve a surfactant effect;
- e. drying the solids obtained from the variable speed mixer in a thermal paddle dryer;
- f. hydrating solids obtained from the thermal paddle dryer;
- g. heating solids obtained from the hydrating step;
- h. passing evaporated fluids from an outlet positioned on a top of the thermal paddle dryer;
- i. separating solid particles obtained from the thermal paddle mixer in a dual cyclone arranged in parallel;
- j. thermally shocking clean gases obtained from the dual cyclone in a first and a second heat exchanger;
- k. condensing alkali salts from a stream obtained from the first and second heat exchangers;
- l. recovering a middle fraction hydrocarbon condensate and water from the first heat exchanger and a first separator;
- m. recovering a light hydrocarbon condensate and water from the second heat exchanger and a second separator;
- and
- n. catalytically oxidizing non-condensed gases.
Dependencies are inferred from the claim text.