152results about "Working-up pitch/asphalt/bitumen by solidifying/disintegrating" patented technology

The invention relates to a method for simultaneously producing liquid fuel and asphalt paving materials by coprocessing coal and heavy oil. The method comprises the following steps: mixing coal dust, catalyst and heavy oil to prepare pulp; preheating and entering a reactor to carry out reaction; separating reaction products to separate gaseous substance, light oil, water and heavy mixture; extracting hydrogen from the separated gaseous substance through pressure swing adsorption; returning the purified hydrogen to the reactor to be used circularly, and using the remaining gas as fuel after purification; carrying out oil-water separation on the separated light oil and water to obtain the light oil and the water; leading the heavy mixture into a distilling tower to obtain coarse oil and tower bottom product through distillation separation; mixing the coarse oil and the light oil to obtain liquid fuels of gasoline, kerosene, diesel fuel, fuel oil, and the like through upgrading process; and processing the tower bottom product to get the asphalt paving materials. The invention has the advantage that under the moderate process condition, the liquid fuel and asphalt paving materials canbe produced simultaneously.

Method and unit for recycling a bituminous membrane provided with at least one reinforcement, which membrane is reduced to pieces which are introduced into a recycling unit, provided with a first rotor, housed in a first stator, and where they are heated and ground, said pieces being conveyed into a chamber, delimited by an external wall of the first rotor and a recess arranged in a counter-element mounted on the stator, where they are subjected to a trituration, the pieces thus triturated then being discharged from the chamber by flowing along said external wall of the rotor.

When a pitch composition prepared by mixing 100 parts by weight of mesophase pitch with 10 to 1,000 parts by weight of coal tar pitch, is heat-treated at a temperature of 500° C. or higher, it is possible to produce a high-density coke at a high yield while avoiding the foaming of the mesophase pitch. In addition, when the coke is graphitized at a temperature of 2,000° C. or higher, it is possible to obtain an artificial graphite having a high graphitization degree. Further, when the coke is first pulverized and then graphitized at a temperature of 2,000° C. or higher, it is possible to obtain a high-crystallinity graphite powder which can be suitably used as a carbon material for a negative electrode of non-aqueous solvent type secondary battery having a high discharge capacity and a high charge-discharge efficiency.

Apparatus for producing pellets from hot heavy hydrocarbon or asphaltene, in accordance with the present invention, includes flow means that supplies the hot heavy hydrocarbon or asphaltene through a conduit to its outlet; and pellet producing medium or means that breaks up the liquid stream of the hot asphaltene flowing out of the outlet of the conduit and produces pellets of asphaltene. Furthermore, the apparatus includes a reservoir or container that collects the pellets of heavy hydrocarbon or asphaltene together with some fluid producing a slurry; and transporting means that transports the slurry to the required location. Preferably, the fluid is liquid water. In addition, the pellet producing medium preferably is liquid water.

A method of making coated carbonaceous particles comprising: providing a carbon residue forming material; providing particles of the carbonaceous material; mixing the carbon residue forming material with the particles of the carbonaceous material at an elevated temperature; depositing a coating of carbon residue forming material thereon; and stabilizing the coated particles by subjecting the coated particles to an oxidation reaction. These coated carbon-containing particles are particularly suitable for the production of electrodes in accumulators, especially rechargeable accumulators.

A process for drying fine tailings is provided. The process, which may use a pipeline reactor system, comprises providing an in-line flow of the fine tailings; continuously introducing a flocculent solution to cause dispersion and commence flocculation of the fine tailings and may comprise rapid turbulent mixing; subjecting the fine tailings to flocculation and water release conditioning in-line to cause formation and rearrangement of floes and increasing the yield shear stress to form flocculated fine tailings while avoiding over-shearing of the flocs; and depositing the fine tailings to allow the release of water, formation of a non-flowing fine tailings deposit and drying of the non-flowing fine tailings deposit. The process enables effective in-line dispersion, flocculation and water release, resulting in reliable deposition and drying of the fine tailings deposit.

The invention discloses an asphalt crushing and melting equipment for municipal construction, which comprises a non-melting slag discharge pipe, a heating sleeve, a grinding roller, a fixed breaking hammer and an asphalt melting tank. A support frame is installed at the bottom of the asphalt melting tank. The upper end of the melting tank is connected to the asphalt input pipe; the top of the asphalt melting tank is equipped with a stirring motor, the rotating shaft of the stirring motor is connected to the rotating shaft through a coupling, and the rotating shaft is installed vertically inside the asphalt melting tank, and the top of the rotating shaft is welded Breaker, the bottom side of the rotary breaker is equipped with a number of rotating breaker teeth, and the bottom side of the rotary breaker is equipped with a fixed breaker; it realizes the convenient addition of asphalt blocks and avoids clogging; it realizes grinding treatment and further crushing, which is convenient for asphalt Block melting operation; realize the separate discharge of non-melting slag and asphalt melt, improve the effect and quality of asphalt melting; it is beneficial to the melting of asphalt, the heat transfer oil circulates, and the heating effect is good.

The invention discloses a preparation method of bitumen balls, which comprises the following steps: 1) putting viscosity depressants into a reaction kettle, heating and melting; under the condition of stirring, adding bitumen with high softening point; under the condition of stirring, heating the reaction kettle to a temperature not lower than the softening point of the bitumen with the high softening point and keeping the temperature for 1-3 hours; and cooling to obtain the prepared bitumen, wherein the softening point of the bitumen with high softening point is 180-300 DEG C; and 2) heating the prepared bitumen to 90-180DEG C, and enabling the bitumen has mobility, in the state of heat preservation, adding the prepared bitumen below the suspending medium liquid level of which the temperature is 80-90 DEG C, keeping for 1-10min at the temperature of 80-90 DEG C, and cooling to obtain the bitumen balls, wherein the suspending medium is polyving alcohol aqueous solution. The method of the invention has the characteristics of full utilization of raw materials of bitumen, reduced waste of raw materials, simple preparation process, and low production cost; and the bitumen ball prepared by the method is more uniform, and has smoother surface, thus avoiding the crash and adhesion of bitumen balls.

Improvements to open-art Solvent Deasphalting (SDA) processes have been developed to reduce capital and operating costs for processing hydrocarbon streams are provided whereby open art SDA scheme is modified to include appropriately placed mixing-enabled precipitators (MEP's) to reduce solvent use requirements in an asphaltene separation step and to increase overall reliability for SDA processes, particularly suitable for Canadian Bitumen. When integrated with a mild thermal cracker, the improved SDA configuration further improves crude yield to be pipeline-ready without additional diluent and for use to debottleneck existing facilities such as residue hydrocrackers and coking units.

The invention relates to a spraying and granulating separation column with a jacket cooling system on a taper section. The main structure of the separation column mainly comprises a granulating column body, a spraying and granulating nozzle system and a lower discharge pot from top to bottom, wherein the granulating column body can be formed by a separation and precipitation section, a taper section and a jacket cooling system; the spraying and granulating nozzle system can be formed by a distributor master pipe and a plurality of distributor branch pipes; the distributor branch pipes are symmetrically distributed, and the jet direction of the outlets of the distributor branch pipes form a certain angle with the vertical direction, which can form a rotating flow field with tangential velocity; the jacket cooling system comprises a tangential cooling water outlet, a radial cooling water inlet and a jacket main body; and cooling water rotates and upwards flows in a jacket, separated particles rotate and downwards flow in the spraying and granulating separation column, and the rotating and flowing directions of the cooling water and the separated particles are opposite to form contranatant heat exchange. In the invention, rotating flow fields of different degrees can be formed in the granulating column through adjusting the angles of the charge distributor and the number of the distributor branch pipes to realize different particle distribution states and improve the gas-solid separation efficiency; and different heat exchange efficiencies can be realized through adjusting the temperature, the pressure and the flow rate of a cooling water inlet and the structural size of a cooling water jack, and then the particle temperature can be reduced to control the temperature of the granulating column.

Systems and methods for pelletizing hot asphaltenes are provided. Asphaltenic hydrocarbons can be dispersed to provide two or more asphaltenic particles. The asphaltenic hydrocarbons can be at a temperature of from about 175° C. to about 430° C. The asphaltenic particles can be contacted with a film of cooling medium. The film can have a thickness of from about 1 mm to about 500 mm. At least a portion of the asphaltenic particles can be solidified by transferring heat from the asphaltenic particles to the cooling medium to provide solid asphaltenic particles. The solid asphaltenic particles can be separated from at least a portion of the cooling medium.

The invention discloses an asphalt forming method, comprising the steps of pressurizing and cooling liquid asphalt and then jetting the asphalt via a nozzle-type former for cooling formation. The invention also provides a system device for implementing the method. The device is mainly composed of a forming pump (3), a gasification cooler (9), a cooling coil (10), a steam condenser (13), the nozzle-type former (16) and a link plate conveyor (17), the cooling coil (10) is disposed in the gasification cooler (9), the steam condenser (13) is connected with the gasification cooler (9), the nozzle-type former (16) is connected with the end of the cooling coil (10) and is disposed above the link plate conveyer (17). The device is simple in process and convenient in operation, and pressurizes andcools the asphalt in a sealed system for formation so that the asphalt has quite small contact area with the air, thus can solve the problems such as inferior appearance, high moisture and serious pollution, etc. The cured asphalt is columnar in shape, uniform in thickness and almost solid and has water content not more than 5%, which accords with the national standards.

Disclosed are granules comprising an elastomeric polyurethane and bitumen, processes for preparing the granules in an extruder and to their use for preparing a bituminous binder, which may especially be used for producing prefabricated sealing membranes by depositing said bituminous binder onto a fibrous support.

The embodiment of the invention discloses a pouring steel belt type asphalt granulation production unit. The pouring steel belt type asphalt granulation production unit comprises a material heat-preservation system, a lifting-moving pouring granulation system, a cooling and conveying system and a finished product packaging system, wherein the material heat-preservation system is connected with thelifting-moving pouring granulation system through a feeding pipeline and used for preserving asphalt for a shell and asphalt for an inner core and delivering the asphalt for the shell and the asphaltfor the inner core to the lifting-moving pouring granulation system through the feeding pipeline and a material pump; the lifting-moving pouring granulation system is used for pouring granulation ofthe asphalt for the shell and the asphalt for the inner core and forming liquid granules to be output; the cooling and conveying system is connected with the lifting-moving pouring granulation systemand used for cooling the liquid granules output by the lifting-moving pouring granulation system to form solid granular asphalt to be output; and the finished product packaging system is connected with the cooling and conveying system and used for packaging the solid granular asphalt output by the cooling and conveying system. The pouring steel belt type asphalt granulation production unit has thecharacteristics of easy operation, continuous production, high automation degree and high production efficiency.

The invention relates to a low energy one-step method for preparing asphalt balls. The method comprises steps of directly adding high softening point asphalt, naphthaline, dispersing agent and water into a normal pressure reaction kettle according to weight ratio of 1:(0.35-0.5):(0.01-0.3):(20-40), rising temperature up to 75-95DEG C at stirring rate of 200-500rpm, keeping warm for 1-5 hours at the temperature, then separating solid and liquid directly without cooling down so as to obtain the asphalt balls. The one-step method has the advantages of directly preparing the asphalt balls by one step, having low equipment cost due to the use of normal pressure reaction kettle, and having high safety and low energy consumption.

The invention relates to a coal pitch refining method used for synthesizing mesophase pitch. The coal pitch refining method used for synthesizing mesophase pitch comprises following steps: coal pitchis smashed and sieved, a mixed solvent A is added into coal pitch, an obtained mixture is stirred, is allowed to stand, and is subjected to layering so as to obtain an upper layer which is a mixed solution A of the mixed solvent A and coal pitch, and a lower layer which is an impurity mixture containing coal powder coke particles; the upper layer mixed solution A is subjected to filtering and distillation for recovery of the mixed solvent A so as to obtain crude coal pitch; a mixed solvent B is added into the crude coal pitch, and stirring, standing, and layering are carried out so as to obtain an upper layer which is a mixed solution B of the mixed solvent B and refined coal pitch, and a lower layer which is a heavy asphalt impurity mixture; the upper layer mixed solution B is subjected to filtering and distillation for recovery of the mixed solvent B so as to obtain refined coal pitch can be used for synthesizing mesophase pitch. The coal pitch refining method is capable of realizingseparation of coal pitch effective components with impurities such as coal powder coke particles under normal pressure conditions, the obtained refined coal pitch can be taken as a high grade carbonmaterial raw material, and the requirements of subsequent high added value product production are satisfied.