Recovery of tar alkali
The present invention relates to loading light oil of tar series into distillation tower to separate distillate with low boiling point, heavy oil distillate and light oil distillate. Tar...
3
85105609
Method for hydrogenation of coal tar pitch
This invention includes the use of a hydrogenation catalyst supported on a refractory material of inorganic oxide. The catalyst participates a slight extent of hydrogenation action for t...
4
86102635
Asphalt materials and their use A process for making a bituminous stock modified with plastics materials, characterized in that 2.5 to 40% by weight relative to the whole stock of a natural or synthetic rubber, a polyol...
Mechanical stirring device for dewatering tar
This invention relates to a installation in the coal and chemical industry. It has longer dewatering duration and lower efficiency for the existing tar-dewatering device. It is difficult...
7
86102712
Bituminous materials and thereof applications A bituminous composition, modified with plastics materials and fillers, characterized in that it comprises a mixture of a residue, obtainable from the Visbreaking process by the introduct...
8
87102480
Process for preparation of bitumen Process for the preparation of bitumen in which a residual fraction of a thermally cracked hydrocarbon feedstock is distilled under subatmospheric pressure at a maximum distillation tempe...
9
87100790
Process for treating waste sulphuric-acid alkylate
This invention belongs to chemical engineering and is used for processing and making use of waste sulphuric-acid alkylate. The principle of the invention is that the waste sulphuric-acid...
10
87103585
Cationic bitumen emulsion The setting time of cationic emulsions of asphalt, bitumen, coal tar or a mixture thereof may be shortened by incorporating into such emulsion at least 0.001 parts by weight per 100 parts...
11
87103787
Process for preparing mesophase pitches A process for an efficient preparation of a mesophase pitch is disclosed. The process is suitable for the production of high performance carbon fibers, from a coal tar or a petroleum resi...
12
87103595
Method for preparing the intermediate phase bituminous A process for the preparation of an excellent mesophase pitch suitable for use as a spinning pitch for the production of high performance carbon fibers is disclosed. The mesophase pitch c...
13
88100656
Process and equipment for making carbon fibre In a process for producing carbon fibres from coal tar pitch, the coal tar pitch is filtered before being spun and the pitch filtrate is distilled in a thin-film evaporator in order to in...
14
88100192
Synthetic pitch and its manufacturing method
The present invention relates to a product of synthetic pitch, which is especially suitable for road and building, and its manufacturing process. It uses the waste liquor after the produ...
Production method of granular pitch
The present invention relates to the method of crushing lump pitch into granular pitch, including both hot-spraying method and cooling crush method. In the hot-spraying method, the lump ...
18
89103464
Asphalted oil pump to against overflow
This invention relates to an improvement of asphalt pump arrangement. An internal circulation loop of heating tank composed of three-function valve and jet tube is added in original pump...
19
89106115
Making method of carbon monoxide and hydrogen mixed gas fuel
a fabrication method of mixing gas fuel is published in this invention. Natura limestone and calcium carbonate are heated to 860-1000deg.C to generate carbon dioxide and calcium oxide, t...
20
90107417
Quick heating device for asphalt
The invented device is composed of floating preheater, high temp. quick heater and pipeline conveyer. Via the floating preheater the asphalt is preheated to 80-110 deg.C, then it is pump...
21
90109084
Installation for controlling trail gas of asphalt oxidation
The installation for controlling tail gas of asphalt oxidation is applicable for treating flue gas released in the course of asphalt oxidation production. Said installation firstly uses ...
Bitumen and its preparation
This coal-melting asphalt is made of asphalt, coal powder, assistant which is one selected from a group consisting of naphthalene oil, anthracene oil and coal tar, and catalyst is one se...
Separating quinoline non-soluble composition from tar
This invention discloses a process for separating insoluble quinoline from coal tar by use of centrifugal settling method. Which comprises technological steps such as mechanical clarific...
27
92106129
Asphalt flue gas purifying method
The method uses slag ash as adsorbent which is placed in the adsorption bed. The asphalt flue gas is sucked by a blower in gas distributor, and enters into the adsorption bed, after adso...
Hydrocarbyl process by distillation An improved wiped film evaporator (WFE) process for removing low molecular weight species from a hydrocarbyl mixture is disclosed, wherein partial oxidation of a hydrocarbyl mixture prece...
Prodn. method for No.30 construction asphalt
The process of this invention includes: residuum formed by reduced pressure is extracted with solvent, lubricating oil and No.100 A.B. petroleum bitumen are obtained. At same time, heavy...
34
93120049
Method for preparation of active carbon
The present invention recommends a preparation method of active carbon, in particular by using bitumen as raw material. Its main technique is characterized by that the pulverized bitumen...
35
94100638
Prodn. method for high quality common asphalt
The process of this invention was provided to produce high quality petroleum bitumen from reduced-pressure residue of high wax content petroleum. At same time, heavy bituminous pitch of ...
Process of producing low waxy road asphalt
The present invention relates to the prodn process of low-wax asphalt for heavy. traffic roads. Low-wax road asphalt is produced by mixing deoiled asphalts from modified catalytic slurry...
38
94108359
Double quaternary ammonium salt cation asphalt emulsifier
The emulsifier contains cationic surfactant (30-60%) and solvent and said solvent is alcohol solution. Said cationic surfactant is diquaternary ammonium salt. The emulsifier features hig...
39
95111271
Deasphalting method
The present invention relates to a deasphalting method, and is charac erized by that an inorganic material is added to depressurized residuum according to a certain proportion; in the co...
40
95191643
Removing contaminants from oil A process comprising combining the heavy oil still residue and propane in conduits (146) and pumping mixture through static mixer (300). The mixture is then passed through heat exchanger ...
41
94112466
Method for prodn. of diesel for coal tar oil
Coal tar is used as the main raw material, adding the other additional materials, through mixing, stirring, catalytic oxidization-distillation and synthesis, the No. 0-35 diesel oil can ...
42
95110110
Atmospheric oil decolouring method for road asphalt
The present invention relates to a processing method of petroleum asphalt. It features that after washing with concentrated sulphuric acid and removing the acid dreg in the first settlin...
Process for preparing viscosity-gradied asphalt oxide product
During the preparation of viscosity graded asphalt oxide product, at least two viscosity values corresponding to different times in initial oxidation stage are taken and used to draw lin...
Process for preparing middle phase asphalt
A method for preparing intermediate asphalt includes mixing aromatic compound, crosslinking agent and catalyst in the ratio of 1mol : 0.2 -1.0 mol : 5 -20 wt% (total wt.of aromatic compo...
Method for preparing penetration graded asphalt oxide product
During the preparation of penetration graded asphalt oxide product, at least two penetration values, corresponding to different times in initial oxidation stage are taken and used to dra...
51
97101618
Method for preparing narrow size distribution asphalt ball
The present invention uses 100 portions of asphalt with high softening point and 10-50 portions of additive and uniformly mixes them under 100 to 300 deg.C to form eutectic body, then ma...
52
97101542
Petroleum asphalt based active carbon and its prepn. method
A byerlyte-base activated carbon is prepared from petroleum coke made up of byerlyte, modifier with carbon aperture structure and adhesive through crushing and sieving petroleum coke, mi...
Preparation of interphase carbon microball
Coal tar or heavy oil as raw material is treated through thermal filtration to remove pyridine-insoluble matter and to obtain purified coal tar, which is further mixed with coal tar and ...
Preparation of intermediate phase asphalt with solid superacid
Arene or residual oil with softening point lower than 200 deg.c and asphalt as material and ZrO2/SO42- or TiO2/SO42- as catalyst are mixed in the ratio of 1 to 0.05-2.0 and reacted at 90...
57
97105202
Technology for processing tar from delayed coking process
A method for treating foul oil from delaying coking for prodn. of coke includes pretreatment: heating, settling, dewatering, and removing fine coke, then the pretreated foul oil is sent ...
Method for production of modified asphalt for construction
A process for preparing modified asphalt for building includes pretreating raw asphalt and addition of modifier, and features high performance of modified asphalt, less consumption of mo...
60
97116936
Method for producing high-viscosity asphalt
A process for preparing high-viscosity asphalt used for highway is prepared from the propane deasphalting asphalt extracted from Oman's crude oil through semi-oxidizing, and features hig...
61
98804002
High temperature, low oxidation stabilization of pitch fibers The present invention provides a process for thermosetting pitch fibers in reduced times, at low concentrations of oxygen and at higher temperatures than previously possible. Additionally...
Heating method for transporting bulk asphalt
The present invention relates to liquid transportation, and features that the asphalt transporting method adopts separated heating equipment and heat exchange equipment, that is, the tra...
Dissolving process for preparing modified refractory asphalt
A dissolving process for preparing modified refractory asphalt includes such technological stps as proportionally adding dewatered residual oil containing wax (50-80 wt.%), high-molecula...
74
99107872
Process for preparing asphalt as road and coating of surface
An asphalt for road or coating of other surfaces is prepared from coal and petroleum residue through hydrogenation. Its advantaves are high quality, hydrogen/carbon atom ratio lower than...
Rubber pitch modifier and its preparing method
Rubber asphalt modifier is prepared with waste rubber bits and residual oil Materials including waste rubber 50-85 wt% and residual oil 15-50 wt% are reacted at 250-300 deg.C inside a re...
77
99119791
Process and equipment for preparing and/or oxidizing asphalt
A process for preparing and/or oxidizing asphalt includes such steps as vacuum distillating of residal dregs generated by ordinary-pressure distillation of crude oil, dividing the dregs ...
Process for treating catalytically cracked oil slurry
A process for full use of the catalytically cracked oil slurry includes vacuum distillation to obtain light and heavy components, returning the light component to catalytic cracking equi...
Production process of asphalt for high-grade highway
The invented productino process includes the following steps: using 70-95% of residuum, 5-30% of slurry oil and proper quantity of turpentine as raw material, uniformly mixing them in mi...
Method of reducing fumes from vessel of molten asphalt In a method of melting asphalt (24) in a vessel (10), the molten asphalt normally emitting fumes, 0.2 weight percent to 6 weight percent of a polymer is added to the asphalt to reduce the...
84
00101312
Asphalt heater
An asphalt heater is composed of pot containing fire tube, heating stove, stovepipe, hearth and firebox. Said fire tube passing through the space of pot is linked to stovepipe and commun...
Preparation method of mesophase carbon microsphere
The preparation of intermediate phase carbon microsphere includes the steps of raw material preparation, polymerization reaction separation and drying, and the composition of its raw mat...
Smell-less pine tar and its preparation
The material for the pine tar includes talloel oil, vegetable oil leftover, black rosin, pit asphalt, rubber arene oil, industrial fat, coumarone and polyvinyl alcohol. During the prepar...
89
00113672
Condensate liquid recovery process of ammonia synthesis process
The recovery process of liquor condensate in the process for synthetic ammonia is characterized by that said recovery process includes the following steps: making the liquor condensate p...
Storage stable modified asphalt and its preparing mehtod
The storage stable modified asphalt is prepared with the material including asphalt 50-97.7 wt%, polymer 2.0-20.0 wt%, compatilizer 0.1-20.0 wt%, coupling agent 0.1-10.0 wt% and polar co...
92
00120796
Preparation of interphase carbon microball
The preparation method of mesophase carbon microsphere includes the following steps: preparing raw material, polymerization reaction, product separation and drying, in which the composit...
Solvent interphase and recovery thereof The invention relates to a method for recovering solvated mesophase from pseudomesogens, which includes: (1) mixing carbon-containing aromatics pitches comprising the pseudomesogens with ...
100
00120621
Process for preparing heavy coal tar from high-temp coal tar
A process for preparing heavy coal tar from high-temp coal tar includes such steps as demulsifying (dewatering), reducing viscosity, reducing solidifying point, sweetening, proportioning...
