METHOD OF COMPLEX PROCESSING OF RESIDUE OF ATMOSPHERIC DISTILLATION OF GAS CONDENSATE AND INSTALLATION FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC C10G47/06 C10G49/04 C10G7/00 

FIELD: technological processes.

SUBSTANCE: invention relates to methods for processing a heavy hydrocarbon feedstock with an extremely high content of paraffin-naphthenic hydrocarbons and a low content of native resins and asphaltenes under hydrogen pressure in the presence of heterogeneous nanosized catalysts and can be used for processing the atmospheric residue of gas condensate (ARGC) distillation. By the method of complex processing of the residue of atmospheric distillation of gas condensate, the ex situ suspension of an ultrafine Mo-containing catalyst with particle sizes of 5–300 nm and a catalyst concentration of 1 % in the distillation residue of the hydrogenated is dispersed in ARGC to obtain a homogeneous stable suspension of an ultrafine catalyst containing 0.02–0.05 % catalyst (molybdenum). Before hydroconversion, the mixture is heated in a regenerative heat exchanger to 250–280 °C and in a tubular furnace up to 380–450 °C, carry out a hydroconversion of the prepared mixture at this temperature and a pressure of 7–10 MPa in a riser reactor with a cold hydrogen-containing gas fed into two or three points at different reactor heights. Products are separated in high and low pressure separators with gas evolution and amine gas purification, which is sent to the hydrogen concentration unit and returned to the hydroconversion as a hydrogen-containing gas, and then sent to distillation. Distillate fractions NK-180 °C and 180–350 °C is output as a commodity product. Part of the unconverted high-boiling residue with a boiling point above 350 °C containing the catalyst is recycled to the hydroconversion process as a recycle, and part is directed to the recovery of metals and spent catalyst, after which a portion of said demetallized residue is returned as the hydrogenation distillation residue to obtain a slurry of the fresh catalyst, and part is withdrawn as an additional commodity product, a marine fuel component. To implement this method, a plant is used, including a raw material preparation and catalyst preparation unit, ARGC hydroconversion unit, a hydroconversion separation unit, a hydrogen concentrating unit capable of producing a hydrogen-containing gas, connected to a hydroconversion unit, a catalyst separation unit, and a commercial product outlet unit-distillate fractions and a marine fuel component. Feedstock and catalyst preparation unit includes a sequentially connected fresh catalyst slurry preparation device and a catalyst slurry mixing device with the feed. Regenerative heat exchanger and a tubular furnace are installed in series before the hydroconversion unit. Hydroconversion block is a reactor with an upward flow of feedstocks comprising two or three points of supply of cold hydrogen-containing gas at different reactor heights. Hydroconversion separation unit includes high and low pressure separators and an amine gas purification unit connected to them and to the hydrogen concentration unit, and an atmospheric distillation column connected to a gas purifying device, a distillate fraction recovery unit, a catalyst mixing device of the catalyst slurry with a feed and a catalyst recovery unit, which is connected to a device for obtaining a suspension of fresh catalyst and an output device for a second commercial product, a marine fuel component.

EFFECT: increased ARGC conversion depth, increase of process stability, simplification of installation and method, reduction of capital and operating costs, exclusion of coke formation and deposition.

2 cl, 1 dwg, 4 ex