43results about How to "Guaranteed operating cycle" patented technology

A radiation-sensitive composition includes a radically polymerizable component that comprises carboxy groups, an initiator composition to generate radicals, and a polymeric binder comprising poly(alkylene oxide) segments and optionally pendant cyano groups. This composition can be used to prepare imageable elements such as negative-working, on-press developable printing plate precursors.

The invention discloses a multistage hydrogenation method for heavy hydrocarbon. The method comprises the following technical steps of: mixing a condensed heavy hydrocarbon raw material and a gas phase material flow discharged from a hydrogenation desulfurization reactor and a hydrogenation denitrification reactor, and putting the mixture into a boiling bed hydrogenation demetalization reactor; cooling and purifying the reacted gas phase material flow and taking the cooled and purified reacted gas phase material flow as recycled hydrogen; mixing a liquid phase material flow subjected to the boiling bed demetalization reaction and the hydrogen, and putting the mixture into the hydrogenation desulfurization reactor; mixing the liquid phase material flow subjected to the desulfurization reaction with the hydrogen, and putting the mixture into the hydrogenation denitrification reactor, wherein at least one of the hydrogenation desulfurization reactor and the hydrogenation denitrification reactor is a fixed bed reactor. Compared with the prior art, the method provides a novel flexible, efficient and energy-saving operating mode for treating inferior heavy and residual oil raw materials; the property of the raw materials is organically combined with characteristics of the hydrogenation reactions, so the reaction released heat is fully used, the quality of the product is perfect and the operation process can be flexibly adjusted as required on the premise of guaranteeing the stable operation of a device.

The invention relates to a method for producing a gasoline blend component with a high octane value by using cracking heavy fractions of gasoline. In the method, a single segment double catalyst matching filling process is adopted, materials of cracking gasoline heavy fractions and hydrogen gas are contacted with two hydrogenation catalysts under a milder process condition, reaction products are separated in a separator, hydrogen enriched gas is recycled, and liquid products are the gasoline blend component with a high octane value. The method aims at the cracking gasoline C9+ fractions difficultly treated by petrochemical processing enterprises; and by the process method, the economic benefits are improved, the process flow is simple, the operation is stable, the product quality is better, the investment and operating costs are lower, and the process method is suitable for new building of a hydrogenation plant as well as modification of the old hydrogenation plant.

The invention discloses a low-energy consumption catalytic gasoline hydrodesulfurization method. The method comprises: adjusting the operating conditions of a catalytic cracking device fractionating tower, and adopting an appropriate cutting point to perform pre-separation in an FCC (fluid catalytic cracking) fractionating tower so as to obtain light fractions and heavy fractions; subjecting the mercaptan in the light fractions to hydroconversion to form a heavy sulfide, making the treated light fractions enter a hydrogenation prefractionator to fractionate light gasoline and medium gasoline, mixing the medium gasoline with the heavy fractions generated by the FCC fractionating tower, letting the mixture enter a hydrodesulfurization reactor to undergo deep desulfurization, conducting steam stripping on the obtained refined heavy gasoline, and mixing it with the light gasoline, thus obtaining a clean gasoline product or a blending component. Compared with the existing catalytic gasoline hydrodesulfurization technologies, the method provided in the invention has the advantages that: the equipment energy consumption is significantly reduced, the gasoline octane number loss is small, the gasoline product quality can meet the quality requirement for a sulfur content of less than 10 micrograms / g, and the economic benefits of oil refining enterprises are improved.

The invention discloses a catalytic gasoline hydrodesulfurization method. The method comprises: adjusting the operating conditions of a catalytic device fractionating tower, adding a lateral line, conducting cutting at an appropriate cutting temperature so as to obtain light fractions at the tower top and heavy fractions at the lateral line; subjecting the light fractions to an alkali extraction treatment, and then separating light gasoline and medium gasoline through a hydrogenation prefractionator; and carrying out moderate selective hydrodesulfurization on the medium gasoline, and carrying out deep selective hydrodesulfurization on the heavy gasoline, subjecting the obtained two refined products to gas stripping, and then mixing them with alkali extracted light gasoline, thus obtaining a clean gasoline product. Compared with the existing catalytic gasoline hydrodesulfurization technologies, the method provided in the invention can significantly reduce equipment energy consumption, the gasoline octane number loss is small, the obtained gasoline product quality can meet the quality requirement for a sulfur content of less than 10 micrograms / g, and the economic benefits of oil refining enterprises are substantially improved.

The invention discloses a multistage cooling circulation freezing crystallization system. The multistage cooling circulation freezing crystallization system comprises freezing heat exchangers, a freezing discharging tank, a freezing circulation pump, a freezing crystal mush pump, a first cyclone separator, a freezing crystal growing tank, a freezing discharging pump, a second cyclone separator, afreezing centrifugal buffer tank and a freezing centrifugal machine. The number of the freezing heat exchangers is at least two, and the multiple freezing heat exchangers are arranged in parallel. Thefreezing heat exchanger is communicated with the freezing discharging tank, and the freezing discharging tank, the freezing crystal mush pump, the first cyclone separator, the freezing crystal growing tank, the freezing discharging pump, the second cyclone separator, the freezing centrifugal buffer tank and the freezing centrifugal machine are sequentially communicated; and the freezing discharging tank is also communicated with each freezing heat exchanger through the freezing circulating pump. According to the multistage cooling circulation freezing crystallization system, efficient, stableand long-time operation of freezing crystallization is achieved, and meanwhile the purity and the recycling rate of crystalline salt are guaranteed.

The invention discloses a catalytic cracking and catalytic gasoline hydrogenation combined technological method. The method comprises: adjusting the operating conditions of a FCC (fluid catalytic cracking) device fractionating tower, conducting cutting pre-separation on FCC gasoline in the fractionating tower so as to obtain light fractions and heavy fractions; subjecting the light fractions to alkali-free deodorization, then letting the deodorized light fractions and thermocatalytic diesel oil enter a hydrogenation prefractionator together, thus obtaining light gasoline at the tower top and medium gasoline at a tower middle lateral line, mixing the medium gasoline with the heavy fractions, then passing the mixture through a hydrogenation protection reactor and a hydrodesulfurization reactor in order, and mixing the obtained refined product with the deodorized refined light gasoline so as to obtain a clean gasoline product. With the method provided in the invention, the equipment energy consumption is significantly reduced, the gasoline octane number loss is small, gasoline product quality can meet the quality requirement of a sulfur content of less than 10 micrograms / g, and the economic benefits of oil refining enterprises are improved.

The invention discloses a graphite purging device for the root of an ascending pipe of coke oven machinery. The graphite purging device comprises a coke pushing device and a purging system, wherein the coke pushing device comprises a coke pushing head, a coke pushing rod and a coke pushing transmission gear; the purging system comprises an air compressor, an air bag, a gas circuit magnetic valve, a blowing pipeline, a rubber tube assembly, a cable-supporting pulley, a pulley track beam, a rolling wheel, a slide way and a blowing pipeline driving mechanism; the pulley track beam is fixed above the one side of the coke pushing device; the slide way is fixed right above the coke pushing rod of the coke pushing device; the blowing pipeline is placed on the slide way through the rolling wheel; the front part of the blowing pipeline is propped against the coke pushing head; the rubber tube assembly is placed on the cable-supporting pulley and connected with the rear part of the blowing pipeline; one end of a steel wire rope of the blowing pipeline driving mechanism is connected with the tail part of the blowing pipeline, while the other end is connected with a pulling mechanism; and a backstop is installed on the pulling mechanism. The beneficial effects of the graphite purging device are as follows: the device can ensure the operation period of the coke pushing device, effectively remove the graphite which is at the root of the ascending pipe, improve the production stability of the coke oven body and the operation efficiency of the coke oven machinery, avoid smoke and dust from escaping, and protect environment.

The invention discloses a catalytic gasoline deep hydrodesulfurization method. The method comprises: adjusting the operating conditions of a catalytic device fractionating tower, adding a lateral line, adopting an appropriate cutting point to conduct cutting so as to obtain FCC (fluid catalytic cracking) gasoline light fractions at the tower top and FCC heavy fractions at the lateral line; subjecting FCC gasoline light fractions to alkali-free deodorization, and then separating light gasoline and medium gasoline through a hydrogenation prefractionator; and carrying out moderate selective hydrogenation on the medium gasoline, performing deep selective hydrogenation on the heavy gasoline, and mixing the obtained two parts of refined distillate oil with the light gasoline subjected to alkali-free deodorization, thus obtaining a clean gasoline product or a blending component. Compared with the existing catalytic gasoline hydrodesulfurization technologies, the method provided in the invention can significantly reduce equipment energy consumption, the gasoline octane number loss is small, the obtained gasoline product quality can meet the quality requirement for a sulfur content of less than 10 micrograms / g, and the economic benefits of oil refining enterprises are improved.

The invention discloses a catalytic cracking and catalytic gasoline hydrogenation combined process. The process comprises: adjusting the operating conditions of an FCC (fluid catalytic cracking) device fractionating tower, and conducting cutting pre-separation on FCC gasoline in the fractionating tower to obtain light fractions and heavy fractions; subjecting the light fractions to alkali-free deodorization, then leaving the light fractions and thermocatalytic diesel oil to enter a hydrogenation prefractionator together to separate light gasoline and medium gasoline; and making the medium gasoline pass a prehydrogenation reactor and a hydrodesulfurization reactor in order to perform moderate selective hydrogenation, subjecting the heavy fractions to deep selective hydrogenation, and mixing the two parts of refined distillate oil with the refined light gasoline so as to obtain a clean gasoline product or a blending component. According to the process provided in the invention, the equipment energy consumption is reduced significantly, the gasoline octane number loss is small, and the gasoline product quality can meet quality requirement for a sulphur content of less than 10 micrograms / g, and the economic benefits of oil refining enterprises can be improved.

The invention discloses an ethylene cracking C 9 The invention relates to a method for producing aromatic hydrocarbon solvent oil through liquid-phase circulating hydrogenation of aromatic fractions. Ethylene cracking C 9 After the distillate is mixed with circulating oil, fully dissolved with hydrogen, it enters the first hydrofinishing reaction zone, and reacts with precious metal hydrofinishing catalyst; ethylene cracking C for removal of dienes 9 The aromatic fraction is fully dissolved with hydrogen again and then enters the second hydrofinishing reaction zone, where it reacts with hydrogenation protection catalyst, hydrofinishing catalyst A, hydrofinishing catalyst B and hydrofining catalyst in turn, and the hydrofinishing product is separated to obtain high aromatics Solvent oil. The inventive method has realized ethylene cracking C 9 Highly efficient use of aromatic fractions can yield high-quality, stable high-aromatic solvent oils. The invention has the characteristics of low energy consumption and long stable operation period of the device.

The invention discloses a deep hydrodesulfurization method for catalytic gasoline. The method comprises: adjusting the operating conditions of a catalytic device fractionating tower, adding a lateral line, and adopting an appropriate cutting point to perform cutting so as to obtain light fractions at the tower top and heavy fractions at the lateral line; subjecting the light fractions to alkali-free deodorization, then passing the deodorized light fractions through a hydrogenation prefractionator to separate light gasoline and medium gasoline; and subjecting the separated medium gasoline and the heavy fractions to selective hydrogenation, and mixing the refined product with the light gasoline subjected to alkali-free deodorization, thus obtaining a clean gasoline product or a blending component. Compared with the existing catalytic gasoline hydrodesulfurization technologies, the method provided in the invention has the advantages that: the equipment energy consumption is significantly reduced, the gasoline octane number loss is small, the gasoline product quality can meet the quality requirement for a sulfur content of less than 10 micrograms / g, and the economic benefits of oil refining enterprises are improved.

The invention discloses a catalytic gasoline hydrodesulfurization method. The method comprises: adjusting the operating conditions of a catalytic device fractionating tower, adding a lateral line, and adopting an appropriate cutting point to perform cutting so as to obtain gasoline light fractions at the tower top and gasoline heavy fractions at the lateral line; subjecting the light fractions to alkali extraction, carrying out selective hydrodesulfurization on the heavy fractions, and mixing the obtained refined oil with the light gasoline generated by alkali extraction, thus obtaining a clean gasoline product or a blending component. Compared with the existing catalytic gasoline hydrodesulfurization technologies, the method provided in the invention has the advantages that: the equipment energy consumption is significantly reduced, the gasoline octane number loss is small, the gasoline product quality can meet the quality requirement for a sulfur content of less than 10 micrograms / g, and the economic benefits of oil refining enterprises are improved.