97results about "Treatment with alkylation" patented technology

A process for increasing light olefin yields from the fluidized catalytic cracking process. The process combines small units to treat the paraffinic components in the product streams from the fluidized cracking process. The paraffins are dehydrogenated and light olefins are separated. Heavier olefins are passed to an olefin cracking unit for increasing the yields of ethylene and propylene.

A method for reducing halide concentration in a hydrocarbon product having an organic halide content from 50 to 4000 ppm which is made by a hydrocarbon conversion process using an ionic liquid catalyst comprising a halogen-containing acidic ionic liquid comprising contacting at least a portion of the hydrocarbon product with at least one molecular sieve having pore size from 4 to 16 Angstrom under organic halide absorption conditions to reduce the halogen concentration in the hydrocarbon product to less than 40 ppm is disclosed.

The present invention relates to a method for manufacturing aromatic products (benzene / toluene / xylene) and olefinic products from an aromatic-compound-containing oil fraction, whereby it is possible to substitute naphtha as a feedstock for aromatic production and so make stable supply and demand, and it is possible to substantially increase the yield of high-added-value olefinic and high-added-value aromatic components, by providing a method for manufacturing olefinic and aromatic products from light cycle oil comprising a hydrogen-processing reaction step, a catalytic cracking step, an separation step and a transalkylation step, and optionally also comprising a recirculation step.

The present invention relates to a method for manufacturing aromatic products (benzene / toluene / xylene) and olefinic products from an aromatic-compound-containing oil fraction, whereby it is possible to substitute naphtha as a starting material for aromatic production and so arrange stable water supply, and it is possible to substantially increase the yield of high-added-value olefinic and high-added-value aromatic components, by providing a method for manufacturing olefinic and aromatic products from light cycle oil comprising a hydrogen-processing reaction step, a catalytic cracking step, an isolation step and a transalkylation step, and optionally also comprising a recirculation step.

A process is disclosed for removing highly deleterious non-basic nitrogen compounds upstream from an acid catalyzed thiophene alkylation process using adsorbents capable of adsorbing the non-basic nitrogen compounds.

The present invention relates to a method for manufacturing aromatic products (benzene / toluene / xylene) and olefinic products from an aromatic-compound-containing oil fraction, whereby it is possible to substitute naphtha as a feedstock for aromatic production and so make stable supply and demand, and it is possible to substantially increase the yield of high-added-value olefinic and high-added-value aromatic components, by providing a method for manufacturing olefinic and aromatic products from light cycle oil comprising a hydrogen-processing reaction step, a catalytic cracking step, an separation step and a transalkylation step, and optionally also comprising a recirculation step.

The apparatus converts ethylene in a dilute ethylene stream and dilute benzene in an aromatic containing stream via alkylation to heavier hydrocarbons. The catalyst may be a zeolite such as UZM-8. The catalyst is resistant to feed impurities such as hydrogen sulfide, carbon oxides, and hydrogen and selectively converts benzene. At least 40 wt-% of the ethylene in the dilute ethylene stream and at least 20 wt-% of the benzene in the dilute benzene stream can be converted to heavier hydrocarbons.

In a hydrocarbon upgrading process, a hydrocarbon feed is treated in at least one of a steam cracker, catalytic cracker, coker, hydrocracker, and reformer under suitable conditions to produce a first stream comprising olefinic and aromatic hydrocarbons. A second stream composed mainly of C4 to C12+ olefinic and aromatic hydrocarbons is recovered from the first stream and blended said second stream with a residual fraction from a steam cracker or an atmospheric or vacuum distillation unit to produce a third stream. The third stream is then catalytically pyrolyzed in a reactor under conditions effective to produce a fourth stream having an increased benzene and / or toluene content compared with said second stream and a C3-olefin by-product. The C3-olefin by-product is recovered and benzene and / or toluene are recovered from the fourth stream.

Embodiments of methods for co-production of linear alkylbenzene and biofuel from a natural oil are provided. A method comprises the step of deoxygenating the natural oils to form a stream comprising paraffins. A first portion of the paraffins are dehydrogenated to provide mono-olefins. Then, benzene is alkylated with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene. Thereafter, the alkylbenzenes are isolated to provide the alkylbenzene product. A second portion of the paraffins is processed to form biofuel.

A process for removing at least one contaminant from coal tar is described. The process involves extraction with an extraction agent or adsorption with an adsorbent. The extraction agent includes at least one of amphiphilic block copolymers, inclusion complexes of poly(methyl methacrylate) and polycyclic aromatic hydrocarbons, cyclodextrins, functionalized cyclodextrins, and cyclodextrin-functionalized polymers, and the adsorbent includes exfoliated graphite oxide, thermally exfoliated graphite oxide or intercalated graphite compounds.

A process removing ionic liquid from a process stream is described. The process stream is introduced into a coalescer to form an ionic liquid stream and a first treated process stream which has less ionic liquid than the process stream. The first treated process stream is introduced into a separator to form a second treated process stream. The second treated process stream has less ionic liquid than the first treated process stream. The separator is selected from a filtration zone comprising sand or carbon, an adsorption zone, a scrubbing zone, an electrostatic separation zone, or combinationsthereof.

Embodiments of methods for co-production of linear alkylbenzene and biofuel from a natural oil are provided. A method comprises the step of deoxygenating the natural oils to form a stream comprising paraffins. A first portion of the paraffins are dehydrogenated to provide mono-olefins. Then, benzene is alkylated with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene. Thereafter, the alkylbenzenes are isolated to provide the alkylbenzene product. A second portion of the paraffins is processed to form biofuel.

The invention discloses an alkylation product separation method. According to the method, a liquid-phase alkylation product is pressurized by an optional booster pump; the pressurized liquid-phase alkylation product is introduced into a first heat exchanger, and is subjected to heat exchange with a gas-phase material from a high-pressure fractionating tower; the heat exchanged material is furtherheated to 100-180 DEG C in a second heat exchanger; the heated material enters the high-pressure fractionating tower, and is fractionated under a condition of 2.0-6.0 MPa; the gas-phase material at the top of the high-pressure fractionating tower is subjected to heat exchange with the liquid-phase alkylation product; the liquid-phase material at the bottom of the high-pressure fractionating towerenters a low-pressure fractionating tower and is fractionated under a condition of 0.2-1.0 MPa; low-carbon alkane is obtained at the top of the low-pressure fractionating tower, and an alkylation oilproduct is obtained at the bottom of the low-pressure fractionating tower; and the low-pressure fractionating tower is provided with an intermediate reboiler, and the gas-phase material at the top ofthe high-pressure fractionating tower after heat exchange of the first heat exchanger is used as a heat source of the intermediate reboiler. The method provided by the invention can improve the heat utilization efficiency and reduce the separation operation energy consumption in the alkylation process.