A method for disposing of solid refinery waste is disclosed. The method includes removing solid waste constituents from inside a refinery tank using excavating machinery, delumping the solid waste constituents, and conveying the delumped solid waste constituents into a mobile tank. The method further includes transporting the delumped solid waste constituents in the mobile tank to a burning facility, adding at least one diluent, mixing, and pumping from the mobile tank a flowable mixture of refinery waste and the at least one diluent at the burning facility.

A system for combusting particulate solids comprises a hopper, a furnace and a secondary afterburner. The furnace further comprises at least one exothermic continuous reaction vessel (ECRV) that has a volume that is significantly smaller than the volume of the furnace, which operates at a temperature that is higher than the temperature in the remainder of the furnace, the temperature being high enough to auto-ignite the particulates when they enter the ECRV. The ECRV rotates in unison with a conveyor that delivers the solid particulates from a hopper. The apparatus is energy efficient, with few working parts, and provides combusted particulate solids that can be disposed of directly without environmental concerns.

A system for combusting particulate solids comprises a hopper, a furnace and a secondary afterburner. The furnace further comprises at least one exothermic continuous reaction vessel (ECRV) that has a volume that is significantly smaller than the volume of the furnace, which operates at a temperature that is higher than the temperature in the remainder of the furnace, the temperature being high enough to auto-ignite the particulates when they enter the ECRV. The ECRV rotates in unison with a conveyor that delivers the solid particulates from a hopper. The apparatus is energy efficient, with few working parts, and provides combusted particulate solids that can be disposed of directly without environmental concerns.

A flare gas system for flaring high and low pressure flare gases, the system including a first flare gas assembly that has a central air pipe and first and second conduits in surrounding relationship to the air pipe. There is a first annulus formed between the air pipe and the first conduit, and a second annulus formed between the first conduit and the second conduit. A flow restrictor is disposed in the second annulus. A first gas handler conveys a first flare gas to the first flare gas assembly. A second flare gas assembly is connected to the first flare gas assembly and has a tubular housing in which is disposed a pressure operated valve assembly. A second flare gas handler distributes a second flare gas between the second annulus and the tubular housing. A single igniter can be used to ignite the gas from the first flare gas assembly and multiple second flare gas assemblies.