11 results about "Steam pyrolysis" patented technology

The processes disclosed herein are environmentally friendly technologies to produce biocarbon products with low water intensity as well as low carbon intensity. Some variations provide a low-water-intensity process for producing a biocarbon product, comprising: providing a starting feedstock comprising biomass and water; drying the starting feedstock to generate a dried feedstock and a first vapor; pyrolyzing the dried feedstock to generate hot solids and a second vapor; condensing the first vapor to generate a first condensed liquid having a first pH from about 1 to about 7; condensing the second vapor to generate a second condensed liquid having a second pH from about 1 to about 7; forming acid water comprising the first condensed liquid, the second condensed liquid, or a mixture thereof; washing and cooling the hot solids using the acid water, to generate washed, cooled solids; and recovering the washed, cooled solids as a low-water-intensity biocarbon product.

The invention provides a system and method for pyrolyzing retired fan blades based on reheated steam, the system comprises a pyrolysis assembly, the pyrolysis assembly comprises a pyrolysis piece, and the retired fan blades are placed in the pyrolysis piece after being disassembled and broken; a heat source provided by a power plant coupled with the pyrolysis assembly is used for providing a pyrolysis heat source required by the pyrolysis of the fan blade for the pyrolysis piece, and a pyrolysis product is recycled; a heat source provided by the power plant comprises steam with the temperature 50-100 DEG C higher than the pyrolysis temperature of the fan blades. The power plant extracted steam with the matched temperature is used as a high-temperature heat source for pyrolysis of the retired fan blade, so that efficient use of energy is achieved, the power plant extracted steam is used for replacing an existing direct combustion high-temperature heat source, and the thermodynamic second efficiency of the whole system is improved.

An incineration system is adapted for burning an incineration matter, and for generating a regenerative matter by hydrolyzing a hydrolysis matter. The incineration system includes an incineration device, a boiler device, a power generating device, and a thermal hydrolysis device. The incineration device includes an incinerator that is adapted for receiving the incineration matter and for burning the incineration matter to thereby generate heated air. The boiler device receives the heated air from the incinerator and generates steam via the heated air. The power generating device receives the steam from the boiler device to generate electric power. The thermal hydrolysis device includes a tank that is adapted for receiving the hydrolysis matter and the steam. The thermal hydrolysis device is adapted for hydrolyzing the hydrolysis matter via the steam, for generating the regenerative matter by hydrolyzing the hydrolysis matter, and for outputting the regenerative matter.

A process for manufacturing one or more ethylene-derived chemicals having a bio-based carbon content, comprising the steps of: (a) providing a first ethylene stream by (a-i) providing a cracker feed stream comprising pyrolysis oil and fossil-based hydrocarbons, (a-ii) subjecting the cracker feed to steam cracking to obtain a cracker effluent, (a-iii) recovering the first ethylene stream from the cracker effluent; (b) providing a second ethylene stream having a bio-based carbon content; (c) combining the first ethylene stream and the second ethylene stream to obtain a combined ethylene stream; (d) converting the combined ethylene stream to at least one first generation ethylene-derived chemical selected from the group consisting of: (alpha) ethylene oxide, (beta) ethylbenzene, (gamma) ethylene dichloride; and (delta) propionaldehyde; and (e) optionally subjecting the first generation ethylene-derived chemical to a chemical conversion or a series of chemical conversions to obtain a downstream ethylene-derived chemical. The process allows for efficient operation of the steam cracker while allowing for the production of ethylene-derived chemicals having a predetermined bio-based carbon content.

The invention relates to a method for improving the cracking efficiency of a cracking furnace, belongs to the technical field of waste resource recycling, and solves the problems of low treatment efficiency, single treatment substance and the like of cracking equipment in the prior art. According to the method for improving the cracking efficiency of the cracking furnace, segmented cracking control is adopted, a furnace tube of the cracking furnace sequentially comprises a high-temperature cracking section and a steam pyrolysis section in the material movement direction, the high-temperature cracking section is located at the material inlet end and conducts a high-temperature cracking reaction on materials, and cracking products and residual carbon are generated; superheated steam is introduced into the steam pyrolysis section and reacts with residual carbon generated by the high-temperature pyrolysis section to generate reducing mixed gas containing H2 and CO; and the reducing mixed gas is driven by self-generated temperature-pressure gradient of the reaction system, reversely flows from the steam pyrolysis section to the high-temperature cracking section, and participates in the high-temperature cracking reaction process. And the cracking efficiency of the cracking furnace is improved.

The utility model discloses a wastewater treatment mechanism of a steam thermal cracking furnace, which comprises a bottom plate, and the bottom plate is provided with a coagulation tank, a settling tank, a clear water tank I, a sand filter tower, a carbon filter tower, a softening machine and a clear water tank II which are sequentially connected through liquid guide pipes; the coagulation tank is connected with a liquid inlet pipe; the liquid inlet pipe is used for conveying wastewater generated after oil-water separation into the coagulation tank; the coagulation box is connected with a flocculating agent adding mechanism and a first PH adjusting mechanism, and the flocculating agent adding mechanism is used for adding a flocculating agent into the coagulation box; the first PH adjusting mechanism is used for increasing the PH value of the wastewater, so that the wastewater is weakly alkaline; the clear water tank I is connected with a second PH adjusting mechanism, and the second PH adjusting mechanism is used for reducing the PH value in the wastewater; the device further comprises a controller, and the flocculant adding mechanism, the first PH adjusting mechanism and the second PH adjusting mechanism are all electrically connected with the controller. According to the utility model, the wastewater subjected to oil-water separation is subjected to coagulating sedimentation, filtration, softening and PH regulation, so that the wastewater reaches the discharge standard, and the environmental pollution is avoided.

This utility model discloses a cooling and recovery mechanism for a steam pyrolysis furnace, comprising: a processing system; a condenser connected to the processing system; a coolant circulation system connected to the condenser; a gas-liquid separator connected to the condenser; and a liquid storage tank connected to the gas-liquid separator. This cooling and recovery mechanism can treat the gas generated by the steam pyrolysis furnace, removing tar and chlorides, and recovering water and oil, thus protecting the environment and conserving resources.

This invention belongs to the field of carbon fiber composite material recycling, and provides a recycling process for carbon fiber composite materials using molten salt-assisted steam pyrolysis, comprising three stages: molten salt treatment, steam pyrolysis, and post-treatment. Through a synergistic mechanism of "efficient resin decomposition by molten salt and surface residue cleaning by steam," the process achieves deep resin pyrolysis while simultaneously recovering pyrolysis products and efficiently recycling high-performance carbon fibers for reuse. This significantly improves the purity and interfacial properties of recycled carbon fibers, reduces energy consumption and secondary pollution, and is particularly suitable for the green recycling of composite materials with high cross-linking density or special coatings, providing an efficient and clean solution for the circular economy of composite materials.

A system for steam cracking a whole crude that may include a volatilization device, a control system, a separator, and a steam pyrolysis reactor. The volatilization device may be configured to separate a vapor phase from a liquid phase. The control system may be configured to maintain a flow rate of the whole crude and steam, at an initial relative velocity of less than 30 m / s. The separator may be fluidly connected to the volatilization device and configured to separate the liquid phase into a second vapor phase, and a second liquid phase. The steam pyrolysis reactor may include a convection section and a steam pyrolysis heater section, the convection section configured to heat the vapor phase, the liquid phase, and the second vapor phase, and the steam pyrolysis heater section configured to steam crack hydrocarbons in the vapor phase thereby generating a cracked hydrocarbon product.

The invention provides a pulse type steam pyrolysis and denitration synergistic waste incineration flue gas purification device and a use method thereof.The pulse type steam pyrolysis and denitration synergistic waste incineration flue gas purification device comprises a main tank body component, a steam pyrolysis assembly, a denitration assembly, an exhaust filtering assembly and an air inlet cutting assembly, and a steam tank is fixedly arranged in the main tank body component; a denitration catalysis cavity is formed between the outer wall of the steam tank and the inner wall of the main tank body component, an elastic downward sealing cover is arranged in the denitration catalysis cavity in a sliding connection mode, the sealing cover and the U-shaped pipe on the same side directly face the position of the U-shaped pipe, elastic closing of an outlet of the U-shaped pipe can be formed, and after flue gas in the steam tank is accumulated to a certain degree, the sealing cover can be pushed open, so that the flue gas in the steam tank can be recycled. The pyrolyzed flue gas is released into a denitration catalysis cavity, and pulse type transfer of the flue gas is formed; when the annular cover rotates, not only can the exhaust filter element be driven to rotate, but also the partition net can be driven to rotate through cooperation of the driving bevel gear and the driven bevel gear, the use efficiency of the exhaust filter element is improved, meanwhile, partition of the whole smoke is formed, and the steam pyrolysis efficiency is improved.

The invention discloses a method and system for preparing synthesis gas and hydrogen through organic waste steam pyrolysis gasification, and belongs to the field of organic waste treatment.The system comprises a reaction furnace, a regenerative heat exchanger, a washing tower, a purification and separation device, a flash tower and a steam high-temperature heating tower, and the reaction furnace is communicated with the regenerative heat exchanger through a first inlet; a first outlet of the backheating heat exchanger is communicated with a third inlet of the washing tower, and a third outlet of the washing tower is communicated with the purification and separation device; the purification and separation device outputs hydrogen and CO; a fourth outlet of the washing tower is communicated with a fifth inlet of the flash tower, and a fifth outlet of the flash tower is communicated with a fourth inlet of the washing tower; the flash tower is communicated with a second inlet of the backheating heat exchanger, a second outlet of the backheating heat exchanger is communicated with the steam high-temperature heating tower, and the steam high-temperature heating tower is communicated with the reaction furnace. Water vapor latent heat circulation and regenerative circulation are adopted, and the energy-saving effect is remarkable; the H2 / CO molar ratio of the produced gas is adjusted by adjusting the water vapor amount and the oxygen amount.