16results about "Coking carbonaceous materials" patented technology

The utility model relates to condensing equipment field, concretely relates to a tar residue pyrolysis gas condensing separation device, including a plurality of shell, the upper and lower both ends of shell are provided with the outlet pipe and the inlet pipe, the outlet pipe and the inlet pipe between adjacent shell adopt the connection of conveying pipe, the inside of shell is provided with the outlet box and the inlet box, the outlet box and the inlet box are connected with the outlet pipe and the inlet pipe respectively, a plurality of gas pipes are vertically arranged between the outlet box and the inlet box, the shell is filled with heat -conducting oil, the shell is provided with electric heating unit, the outlet pipe on the outside of shell is provided with first branch pipe, first branch pipe and outlet pipe all are provided with first valve, the inlet box is provided with the liquid collection pipe extending to the outside of shell, the liquid collection pipe is provided with second valve, the bracket is provided in the outlet box, a plurality of downward nozzles are arranged on the bracket. The utility model has the effect that the inside of condenser can be cleaned, and the good heat exchange performance of condenser can be maintained.

This invention discloses a distillation apparatus for processing high-QI needle coke feedstock, relating to the field of high-QI needle coke feedstock processing technology. It includes a heating furnace, a vacuum distillation column, and a fractionation column. The heating furnace is connected to the lower end of the vacuum distillation column. The top of the vacuum distillation column is a waste oil discharge end, the middle section is a mid-section oil collection system, and the lower end is a heavy phase pitch collection end. The waste oil discharge end is connected to a top vacuum pump. The mid-section oil collection system is connected to the lower end of the fractionation column. The fractionation column, from top to bottom, consists of a first fraction collection system, a second fraction collection system, and a third fraction collection system. This invention pre-treats needle coke feedstock by combining vacuum distillation and fractionation, significantly increasing the yield of needle coke feedstock.

Provided in the present application are a coke, a negative electrode material, and a lithium ion battery. The coke provided in the present application has a hydrogen mass content of H%, an oxygen mass content of O%, and a high-temperature weight loss rate of V%, and satisfies 2≤V*O / H≤6, which helps to regulate the coking depth of the coke, so that the coke can reduce the difficulty of graphitization while maintaining good processing performance. The obtained negative electrode material has few grain boundary defects in the structure and high capacity, which help to improve the structural stability of the negative electrode material during high-rate charging and discharging, thereby improving the rate performance.

The present disclosure relates to a method for preparing pitch coke, and the prepared pitch coke and its application, the method comprising: (1) extracting quinoline insoluble components, toluene insoluble quinoline soluble components and toluene soluble components from coal liquefaction pitch, and preparing coking raw materials; the content of the quinoline insoluble components is 0.05-3.0 wt%, the content of the toluene insoluble quinoline soluble components is 10.0-29.5 wt%, and the content of the toluene soluble components is 70.0-89.5 wt% relative to the total weight of the coking raw materials; (2) preheating the coking raw materials to obtain preheated coking raw materials; (3) coking reaction of the preheated coking raw materials. The method of the present disclosure can prepare pitch coke with high yield without pressurization, low reaction temperature and short reaction time, and the prepared pitch coke has high quality and wide application range.

A process for the conversion of plastics to chemicals includes, in part: providing a plastics stream (A) including polyvinyl chloride (PVC); supplying the plastics stream (A) and a solvent(S) to a reactor vessel (1); subjecting the plastics in the reactor vessel to a temperature of ≥250° C. to <350 under applying a vacuum or using an inert gas sweep, and evacuating the generated hydrogen chloride (B) from the vessel, wherein the PVC is partially dechlorinated to form a plastics stream (C) including partially unsaturated PVC; removing the plastics stream (C) including partially unsaturated PVC from the reaction vessel; separating in a separation system (2) at least a part of the partially unsaturated PVC from the plastics stream to form a dechlorinated plastics stream (D) including the solvent; and combining the stream (D) with an atmospheric residue stream (N) to obtain a stream (O).

The invention provides a two-stage needle coke production device and method. A two-section type needle coke production device comprises a heat exchange device, a raw material preheating furnace, a fractionating tower and an adjusting device, the heat exchange device is connected with the raw material preheating furnace through a pipeline, the raw material preheating furnace is connected with the fractionating tower through a pipeline, and the adjusting device is respectively connected with the raw material preheating furnace and the fractionating tower.

A method for producing a needle coke includes a step of sequentially adding n feedstock oils to a coking reaction at predetermined time intervals. Assuming that an i-th feedstock oil has an aromatic carbon ratio of A (in mol %), an i+1-th feedstock oil has an aromatic carbon ratio of B (in mol %), a first feedstock oil has an aromatic carbon ratio of A1 (in mol %), and a n-th feedstock oil has an aromatic carbon ratio of B1 (in mol %), then B≥A, and B1>A1.

A closed, gastight system for gaining sellable petroleum coke pieces out of solidified petroleum coke in a coke drum unit, wherein the system is configured to be connected to a coke drum unit (X) containing solidified petroleum coke and comprisesa coke crushing unit (C) for crushing the petroleum coke into sellable petroleum coke pieces, configured to be connected to the coke drum unit (X), particularly by means of a flexible transition piece (A);a closed sluice way (D) leading petroleum coke slurry to a closed slurry basin;a closed slurry basin (E);a dewatering bin unit (G) configured to receive the petroleum coke slurry from the slurry basin (E), to collect the sellable petroleum coke pieces, and to act as a filter leading runoff drain water from a lower area thereof as filtered water and petroleum coke fines out of it;a closed drain water basin (I), separate from the slurry basin (E), configured to receive the filtered water and the petroleum coke fines from the dewatering bin unit (G);a water tank (L) configured to receive the filtered water from the drain water basin (I);a hot quench water draining line (2) configured to receive hot quench water from the coke drum unit (X) and to lead the same to the closed slurry basin (E); andcharacterised:in that the water tank (L) is configured as single water tank (L) without a separate second tank; andby comprising one or more of the following elements:a first vent collection line (15a) extending from a top portion of the closed slurry basin (E) to the clean water tank (L), particularly a top portion thereof, for collecting excess amounts of gaseous phase from the slurry basin (E) and for feeding the same to the clean water tank (L);a second vent collection line (15b) extending from the dewatering bin unit (G), particularly a top portion thereof, to the clean water tank (L), particularly a top portion thereof, for collecting excess amounts of gaseous phase from the dewatering bin unit (G) and for feeding the same to the clean water tank (L); anda third vent collection line (15c) extending from the closed drain water basin (I), particularly a top portion thereof, to the clean water tank (L), particularly a top portion thereof, for collecting excess amounts of gaseous phase from the closed drain water basin (I) and for feeding the same to the clean water tank (L);and by comprising a fourth vent collection line (15d) extending from the water tank (L), particularly a top portion thereof, to a vent treatment unit, in particular to a vent incineration unit.

The invention relates to an integrated method for thermal conversion and indirect combustion of a heavy hydrocarbon feedstock in a redox chemical loop for producing hydrocarbon streams. The heavy hydrocarbon feedstock (1) is brought into contact with inert particles (2) in a thermal conversion zone (100). Thermal conversion in the absence of hydrogen, water vapour and a catalyst produces a first gaseous effluent of hydrocarbon compounds (4) and coke, which effluent is deposited on the inert particles (5). The latter is then burned in a redox chemical loop (200) in the presence of oxygen-carrying solid particles (6). The inert particles thus flow between the thermal conversion zone (100) and a reduction zone (300) of the chemical loop while the oxygen-carrying solid particles flow between the oxidation (400) and reduction zones (300) of the chemical loop.

The invention relates to a method for producing hydrocarbon fluids from a fossil hydrocarbon feedstock and a waste oil, the method comprising: a) a first step of converting the fossil hydrocarbon feedstock in a first conversion section (Cunit) producing a converted hydrocarbon effluent, b) a second fractionation step in which the converted hydrocarbon effluent is fractionated in a second fractionation section (Funit) into at least one liquid hydrocarbon fraction, and optionally into at least one gaseous fraction. The waste oil is fractionated with the converted hydrocarbon effluent in the second fractionation section (Funit).

The present invention relates to the field of needle cokes. Disclosed are a needle coke and a preparation method therefor. The needle coke contains a reinforcing agent embedded between needle-shaped structures of the needle coke. The needle coke has a strength of 24-28%, a coefficient of thermal expansion of 0.9×10-6 / ºC to 1.1×10-6 / ºC, and an electrical conductivity of 1900 S / m-3000 S / m. The preparation method for the needle coke of the present invention comprises: (1) subjecting a coking raw material to a mesophase growth reaction to form mesophase spheres; and (2) subjecting the mesophase spheres to a drawing-coking reaction in a gas flow containing a reinforcing agent, wherein the mass ratio of the reinforcing agent to the coking raw material is 1:100-1:30000. The needle coke of the present invention has the advantages of higher strength, lower coefficient of thermal expansion, higher electrical conductivity, etc., and is suitable for application in materials such as metallurgical electrodes and battery electrodes.

The present invention addresses to a system and methodology for evaluating the deposition in tubes of the furnaces of delayed coking unit (DCU) in order to reduce the costs involved with premature shutdowns. With this system, load rankings are obtained, influences of certain loads on processing are evaluated, and additives that reduce deposition are further evaluated. Consequently, the results obtained by such a system allow greater flexibility for the follow-up engineer to optimize his delayed coking unit in order to increase load or increase the unit campaign time, drastically reducing costs in premature shutdowns, or increasing its return by increasing load and shutdowns, since the load is limited by the degree of deposit formation, and that directly affects the wall temperature.

A method for manufacturing a negative electrode carbon material, suitable for a lithium ion secondary battery, comprising: (A) heating a heavy oil to become a green coke; (B) heating the green coke to 850-900°C at a first heating rate of 3-5°C / min for at least 4 hours to become a carbon-containing material; (C) grinding the carbon-containing material and classifying the ground carbon-containing material to obtain a carbon-containing powder having a D50 of 8-12 μm and a D10 of 1-8 μm; (D) heating the carbon-containing powder to 1030-1220°C at a second heating rate of 3-10°C / min for at least 4 hours to become a carbon material powder; and (E) heating the carbon material powder to which a predetermined amount of pitch is added to 1030-1220°C at a third heating rate of 0.90-1.25°C / min for at least 5 hours to become a pitch-modified soft carbon. By adjusting the D50 and D10 particle size distribution of the carbon-containing powder through the grinding classification of step (C) and the third heating rate and heating temperature range of step (E), the properties of the soft carbon produced in step (E) can be changed to thereby improve the fast charge and discharge capability of the lithium ion secondary battery after assembly.

The present application relates to the technical field of heavy oil processing, and particularly relates to a method and device for liquid oil pyrolysis and co-production of carbon materials, which comprises the following steps: feeding liquid heavy oil into an electrically heated molten salt reactor through a continuous feeding system, wherein the molten salt reactor is filled with molten alkaline salt medium; performing catalytic pyrolysis of the oil in the liquid phase environment of the molten salt medium, and the residence time of the oil in the molten salt is 5-10s; the liquid oil is uniformly cracked in the molten salt liquid phase to produce low-carbon hydrocarbon gas, hydrogen and dispersed fine carbon particles, and the carbon particles are suspended on the surface of the molten salt under the action of the molten salt buoyancy and do not deposit and aggregate; the suspended carbon particles are collected from the surface of the molten salt in real time through a mechanical push rod continuous collection system; the method can realize continuous and stable pyrolysis of heavy oil and efficient and continuous separation of products in the liquid phase molten salt environment, improve the production efficiency, and ensure the stability of the product quality.

The application discloses a continuous coking reaction system and method based on adjustable microstructure, relates to the field of liquid coking, and comprises a pre-polymerization unit, a regulation and control polymerization unit and a recoking unit, which are connected through pipelines; the pre-polymerization unit is used for pretreating initial pitch raw materials to obtain a pre-polymerization liquid of an intermediate phase; the regulation and control polymerization unit is used for performing light component separation and / or additive feeding polymerization treatment in a modular treatment mode, regulating multi-stage polymerization of the pre-polymerization liquid from the aspects of polymerization depth and polymerization structure, and then extruding and granulating to obtain a high-viscosity polymer; and the recoking unit is used for performing pyrolysis condensation and coking treatment on the high-viscosity polymer in a continuous feeding and discharging mode to obtain coke with adjustable microstructure. Through hierarchical polymerization and additive regulation and control, the application can realize controllable coke microstructure and improve coke quality; the pyrolysis condensation and coking treatment are performed in a continuous feeding and discharging mode, thereby solving the disadvantages of intermittent operation and reducing energy consumption and pollution.