OUR INTELLECTUAL PROPERTY
Below is our published intellectual property. The portfolio is evolving as our research is progressing. Please check national patent libraries, Google Patents or a similar search tool for the most up to date information.
A method for producing high-octane motor gasolines from low-octane hydrocarbon fractions, fractions of gaseous olefins and oxygenates and a plant for the method embodiment
PCT/RU2017/000009 WO/2017/155431
The hydrocarbon feed enters a reactor with a proprietary zeolite-based catalyst. The reactor contains at least two reaction zones, separated by a zone and implements for mixing the products of the previous reaction zone with an oxygenate and olefin-containing co-feed. The reactor effluent is separated into gasoline blendstock, reaction water and the off gas. The results are: (1) increased RON the produced gasoline; (2) reduced content of compounds with high melting points and prone to crystallization, e.g. durene or 2,6-dimethylnaphthalene; (3) reduced content of benzene; (4) increased yield of the produced gasoline.
Method and catalyst for producing high-octane components
PCT/RU2016/000128 WO/2017/155425
The group of inventions relates to a process of co-converting hydrocarbon feedstock with a high content of unsaturated hydrocarbons and aliphatic alcohols into components of high octane gasolines or aromatic hydrocarbons, as well as to catalysts of such a co-conversion. The method of co-converting hydrocarbon fractions and oxygenates into high octane components of fuels or aromatic hydrocarbons includes contacting a hydrocarbon stream with oxygenates over a proprietary catalyst under a certain pressure and temperature. The catalyst contains the HZSM-5 zeolite that passed thermal and steam treatment. The invented composition of the catalyst allows (1) conversion at high temperatures, (2) resistance to water vapor, at the same time providing (3) increased catalyst cycle length that may otherwise be shortened by feedstocks like pyrolysis gasoline, oligomer-gasoline and catalytically cracked gasoline with high olefin content.
Method for producing a concentrate of aromatic hydrocarbons from light aliphatic hydrocarbons, and installation for implementing same
PCT/RU2015/000171 WO/2015/147700
The feed passes through two consecutive reaction units containing a proprietary pentasil zeolite catalyst. The effluent is separated into liquid and gas fractions, and the latter is fed back to the reaction units. The gas fraction is separated into a hydrogen-rich gas (HRG) and light naphtha including olefins; the HRG is fed into an oxygenate synthesis unit. The resultant oxygenates return to both reaction units while the light naphtha with olefins is fed only to the inlet of the first reaction unit. The invention (1) improves the efficiency of producing concentrates of aromatic hydrocarbons and (2) increases the yield of alkylbenzenes, especially xylenes.
Method of producing concentrate of aromatic hydrocarbons from liquid hydrocarbon fractions, and installation for implementing same
PCT/RU2015/000496 WO/2016/024883
The feed, including methanol, is heated in a mixer and then enters a reactor where it is converted into aromatic hydrocarbons in the presence of a catalyst. The effluent is separated into liquid and gas; the gas is recirculated into the mixer, and the liquid is additionally separated into liquid hydrocarbons and water. The hydrocarbon liquids enter a rectification column to be separated into an aromatic hydrocarbon concentrate and reflux which is recirculated to the mixer, and the water is removed. The composition of the liquid aromatic hydrocarbons, which are fed into the rectification column, is measured. Depending on result, the flow rate of the feed to the mixer is adjusted, as can be the temperature of the rectification column. The result is an increased efficiency of producing concentrates of aromatic hydrocarbons with elevated content of alkylbenzenes, particularly xylenes.
Methods for producing aromatic hydrocarbons from natural gas and installation for implementing same
PCT/RU2015/000024 WO/2015/112056
Synthesis gas (syngas) made with natural gas in a syngas production unit is subsequently converted into methanol. Then the methanol is converted into aromatic hydrocarbons in the presence of a proprietary catalyst in two consecutive reactors: (1) low-temperature isothermal reactor for synthesizing aromatic and aliphatic hydrocarbons, and (2) high-temperature adiabatic reactor for synthesizing aromatic and aliphatic hydrocarbons from aliphatic hydrocarbons formed in the first reactor. The effluent from the second reactor enters a separation and stabilization unit, where water is removed and liquid hydrocarbons are separated from gas. Hydrogen-rich gas from the stabilization unit is recirculated to syngas unit to adjust the H2:CO ratio therein to 1.8-2.3:1 and make the syngas by autothermal reforming. The result is an increased efficiency of producing concentrates of aromatic hydrocarbons.
Catalyst and method for the aromatization of C3-C4 gases, light hydrocarbon fractions, and aliphatic alcohols, as well as mixtures thereof
PCT/RU2014/000953 WO/2015/115932
The C3-C4 hydrocarbon gases, light low-octane hydrocarbons and oxygenates (C1-C3 aliphatic alcohols) and/or mixtures thereof are converted into aromatic hydrocarbons over the proprietary catalyst. The catalyst is a mechanical mixture of two zeolites, the first of which has the SiO2/Al2O3 ratio of 20, pre-treated with an aqueous alkali solution and modified with oxides of rare-earth elements at 0.5 to 2.0 wt.%. The second zeolite has the SiO2/Al2O3 ratio of 82. It has residual sodium oxide at 0.04wt.%, and is modified with magnesium oxide at 0.5 to 5.0 wt.%. The zeolites are used in the weight ratio from 1.7:1 to 2.8:1, and the binder, at 20-25% of the weight of the catalyst, includes silicon oxide. The conversion process with the proposed catalyst occurs in an isothermal reactor without recirculation of the gases from the separation stage, by contacting gaseous feedstock (evaporated and heated in a preheater) with a fixed bed of the catalyst. The results are (1) a higher yield of aromatic hydrocarbons with (2) an almost complete conversion of the hydrocarbon feed and oxygenates, (3) an increased selectivity towards xylenes, and (4) a simplification of the process by using a reduced pressure.
Method for increasing the yield of a liquid hydrocarbon product
PCT/RU2021/050177 WO/2022/005331
The invention relates to a method for producing gasolines or aromatic concentrates, in which three streams of feedstock are used, the first stream containing a hydrocarbon fraction, the second stream containing an oxygenate, and the third stream containing an olefin-containing fraction that contains one or more olefins selected from the group consisting of: ethylene, propylene, normal butylenes and isobutylene, in a total amount of from 10 to 50 wt%, and in which three reaction zones are used which are filled with a zeolite catalyst, wherein the hydrocarbon fraction and the oxygenate are distributed into the first reaction zone and the olefin-containing fraction is distributed into all three reaction zones, the mass fraction of the third stream distributed into the last reaction zone being higher than the mass fraction of the third stream distributed into each of the preceding zones. The method makes it possible to increase the yield of С5+ hydrocarbons, to increase the conversion of n-hexane and n-heptane, to reduce the benzene content of the product, to dispense with the recycling of gaseous products, and also to reduce the use of oxygenates.