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34results about How to "Effective way to use" patented technology

Non-sintered ceramic aggregate with stone coal vanadium extraction tailings as main raw material and preparation method thereof

The invention relates to a non-sintered ceramic aggregate with stone coal vanadium extraction tailings as a main raw material and a preparation method thereof. The non-sintered ceramic aggregate comprises the following raw material components in percentage by weight: 45-60 percent of stone coal vanadium extraction tailings, 10-30 percent of fly ash, 7-15 percent of solid alkali exciter, 5-10 percent of cement, 5-10 percent of quick lime, 2-5 percent of gypsum and 5-15 percent of water. The preparation method comprises the following steps of: according to the raw materials and the contents thereof, uniformly mixing the stone coal vanadium extraction tailings and the solid alkali exciter and grinding to be below 0.074 mm to prepare a prefabricated material; adding the fly ash, the cement, the quick lime, the gypsum and the water into the prefabricated material and uniformly stirring to prepare a mixture; aging the mixture for 1-3 hours; pelletizing; aging for 3-7 days; holding in an autoclave; and autoclaving under the condition of 0.8-1.2 MPa for 6-10 hours. The non-sintered ceramic aggregate has the advantages of environmental friendliness, simple process, low energy consumption and high utilization rate of tailings; and a prepared non-sintered ceramic aggregate product has high strength and good thermal insulation performance.
Owner:WUHAN UNIV OF SCI & TECH

Method for recycling phosphorus and fluoride in sewage residue of phosphorus fertilizer plant

The invention discloses a method for recycling phosphorus and fluoride in the sewage residue of a phosphorus fertilizer plant. According to the method, the sewage residue is decomposed by using sulfuric acid, the phosphorus and the fluoride in the sewage residue are extracted, calcium sulfate dihydrate crystal or calcium sulfate hemihydrate crystal and diluted phosphoric acid solution are generated, diluted phosphoric acid and phosphogypsum which is the by-product are obtained through solid-liquid separation, the diluted phosphoric acid is concentrated into concentrated phosphoric acid, the escaped fluorine containing gas is recycled in the process of concentrating the phosphoric acid and making acid and produced into the fluoride such as the fluosilicic acid and the like, or defluorination agent is added into the diluted phosphoric acid to recycle fluoride resources in the form of the fluoride such as the sodium fluosilicate and the like, and the obtained concentrated phosphoric acid can be used to prepare other phosphate products such as the ammonium phosphate and the like by using the traditional method. The method can be used to effectively recycle the phosphorus and fluoride resources in the sewage residue of the phosphorus fertilizer plant so that the waste materials can be changed into the valuable materials and the recycling value of the phosphorus and fluoride resources in the sewage residue of the phosphorus fertilizer plant can be improved. The method has good economic benefit and environment protection significance.
Owner:WENGFU (GRP) CO LTD

Water-retaining, thickening and reinforcing additive for cement mortar and cement mortar containing additive

InactiveCN104119025AReduce unilateral water consumptionImprove mobilityGreen environmentCellulose
The invention discloses a water-retaining, thickening and reinforcing additive for cement mortar and cement mortar containing the additive, wherein the additive is corn straw cellulose or/and modified corn straw cellulose. The water-retaining, thickening and reinforcing additive for cement mortar and the cement mortar containing the additive, disclosed by the invention, have the beneficial effects that the water-retaining, thickening and reinforcing additive for cement mortar is a green environment-friendly product which is free from toxicity, peculiar smell, pollution and corrosivity; if the water-retaining, thickening and reinforcing additive for cement mortar, disclosed by the invention, is doped into cement mortar, the water-retaining property of mortar can be effectively improved; the water-retaining property of freshly mixed mortar is more than 90% and meets standard requirements; simultaneously, the intensity of mortar is obviously increased; the use amount of cement is effectively reduced; the intensity of mortar is increased by above 25%; the 14d tensile adhesive intensity is increased by above 13%; the cost of the water-retaining and thickening material is reduced by above 16%; a utilization way of the industrial by-product, namely cellulose, separated from corn straws, is effectively provided; furthermore, the utilization value is higher. The cost of the water-retaining, thickening and reinforcing additive for cement mortar, disclosed by the invention, is 4000-8000 yuan/ton, and the water-retaining, thickening and reinforcing additive for cement mortar, disclosed by the invention, is wide in source of used raw materials, proper in cost, convenient to use, high in operability and beneficial to popularization.
Owner:SHANDONG HUASEN CONCRETE

Method for increasing yields of low-carbon olefins and aromatics by coker gasoline steam cracking

The invention relates to a method for increasing yields of low-carbon olefins and aromatics by coker gasoline steam cracking, which comprises the following steps: aromatic extraction by an ionic liquid solvent and olefin extraction by an ionic liquid solvent are respectively performed to pretreat raw oil so as to remove aromatics and olefins, thereby obtaining a hydrocarbon stream in which the aromatic content is lower than 2 wt% and the olefin content is lower than 4 wt%; the hydrocarbon stream enters a steam cracking procedure to be subjected to cracking and separation; the crude aromatic stream is sent into a hydrocracking gasoline aromatic extraction unit to separate the aromatic product; and the obtained stream containing rich saturated hydrocarbons is returned and introduced into the cracking procedure together with a petroleum hydrocarbon stream containing less aromatics to react and produce the low-carbon olefins. The method provides a proper application way for coker gasoline, widens the cracking raw material sources, recycles the non-aromatic components by using the original cracking hydrogasoline aromatic extraction system, and increases the yields of the low-carbon olefins and aromatics in the cracking process.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method for increasing yields of low-carbon olefins and aromatics by coker gasoline steam cracking

The invention relates to a method for increasing yields of low-carbon olefins and aromatics by coker gasoline steam cracking, which comprises the following steps: raw oil is subjected to ionic liquid solvent extraction to remove aromatics and olefins, thereby obtaining a hydrocarbon stream in which the aromatic content is lower than 2 wt% and the olefin content is lower than 5 wt%; the hydrocarbon stream enters a steam cracking procedure to be subjected to cracking and separation; the crude aromatic stream is sent into a cracked gasoline hydrogenation unit together with cracked gasoline, and the olefins are hydrogenated and sent into a hydrocracked gasoline aromatic extraction unit to separate the aromatic product; and the obtained stream containing rich saturated hydrocarbons is returned and introduced into the cracking procedure together with a petroleum hydrocarbon stream containing less aromatics to react and produce the low-carbon olefins. The method provides an effective utilization way for the coker gasoline raw material, widens the ethylene sources, recycles the non-aromatic components by using the original cracking hydrogasoline aromatic extraction system, and increases the yields of the low-carbon olefins and aromatics in the cracking process.
Owner:CHINA PETROLEUM & CHEM CORP +1

A method for preparing molded coke from low-modified pulverized coal, heavy oil, and tar residue

InactiveCN104650937BSolve the problem of comprehensive utilization of resourcesAchieve graded quality improvementSpecial form destructive distillationCoking carbonaceous materialsCokeFuel oil
The invention provides a method for preparing formed coke from low-metamorphic pulverized coal, heavy oil and tar residues as raw materials. The method comprises the following steps: firstly, grinding and sieving the low-metamorphic pulverized coal to obtain a raw material powder having a certain particle size, next, evenly mixing the low-metamorphic pulverized coal, the heavy oil and the tar residues together, performing pressure forming in a forming die, performing drying and strengthening treatment on the prepared briquette coal under a low temperature condition, and putting the treated briquette coal into a destructive distillation device for pyrolysis, thereby obtaining the formed coke, coal tar and gas, wherein the gas can be taken as a fuel gas or a chemical raw material gas; and the liquid oil is treated by fractionation to obtain a heavy oil and a light oil, the light oil is treated by hydrogenation for producing a fuel oil, and the heavy oil and the tar residues can be recycled to the briquette coal preparation process. The method is mainly applied to the medium-low temperature pyrolysis and upgrading and grading of the low-metamorphic pulverized coal, and is capable of recycling the tar and the hydrogen-enriched gas in the pulverized coal to the utmost extent while obtaining the formed coke product; and in short, the method has the characteristics of simple process, high production efficiency, high pyrolysis speed, good forked coke strength, good formed coke strength and high light oil yield.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Method for preparing natural gas from yellow phosphorus tail gas and production device using method

The invention relates to a method for preparing natural gas from yellow phosphorus tail gas and a production device using the method. The method comprises the following step: by using yellow phosphorus tail gas and coke oven gas as raw gases, carrying out methanation reaction in a methanation device by using hydrogen in the raw gases and carbon monoxide and carbon dioxide in the raw gases, wherein the ratio of the yellow phosphorus tail gas to the coke oven gas is controlled to control the ratio of the hydrogen to the carbon monoxide and carbon dioxide in the reaction system, so that the contents of the hydrogen, carbon monoxide and carbon dioxide in the gas after reaction respectively conform to the requirements for natural gas, and the volume ratio of the yellow phosphorus tail gas to the coke oven gas is 1:(9-12). The production device comprises the methanation device, a raw gas purification device before the methanation device, and a natural gas purification device after the methanation device, wherein the methanation device is a three-stage or four-stage methanation facility. The method has the advantages of reasonable technological design and low cost, recycles the yellow phosphorus tail gas, avoids waste of resources and environmental pollution, and enhances the economic benefit.
Owner:北京中凯环能高科技有限公司

Non-sintered ceramic aggregate with stone coal vanadium extraction tailings as main raw material and preparation method thereof

The invention relates to a non-sintered ceramic aggregate with stone coal vanadium extraction tailings as a main raw material and a preparation method thereof. The non-sintered ceramic aggregate comprises the following raw material components in percentage by weight: 45-60 percent of stone coal vanadium extraction tailings, 10-30 percent of fly ash, 7-15 percent of solid alkali exciter, 5-10 percent of cement, 5-10 percent of quick lime, 2-5 percent of gypsum and 5-15 percent of water. The preparation method comprises the following steps of: according to the raw materials and the contents thereof, uniformly mixing the stone coal vanadium extraction tailings and the solid alkali exciter and grinding to be below 0.074 mm to prepare a prefabricated material; adding the fly ash, the cement, the quick lime, the gypsum and the water into the prefabricated material and uniformly stirring to prepare a mixture; aging the mixture for 1-3 hours; pelletizing; aging for 3-7 days; holding in an autoclave; and autoclaving under the condition of 0.8-1.2 MPa for 6-10 hours. The non-sintered ceramic aggregate has the advantages of environmental friendliness, simple process, low energy consumption and high utilization rate of tailings; and a prepared non-sintered ceramic aggregate product has high strength and good thermal insulation performance.
Owner:WUHAN UNIV OF SCI & TECH

Water-retaining thickening and strengthening additive for cement mortar and cement mortar containing additive

The invention discloses a water-retaining, thickening and reinforcing additive for cement mortar and cement mortar containing the additive, wherein the additive is corn straw cellulose or / and modified corn straw cellulose. The water-retaining, thickening and reinforcing additive for cement mortar and the cement mortar containing the additive, disclosed by the invention, have the beneficial effects that the water-retaining, thickening and reinforcing additive for cement mortar is a green environment-friendly product which is free from toxicity, peculiar smell, pollution and corrosivity; if the water-retaining, thickening and reinforcing additive for cement mortar, disclosed by the invention, is doped into cement mortar, the water-retaining property of mortar can be effectively improved; the water-retaining property of freshly mixed mortar is more than 90% and meets standard requirements; simultaneously, the intensity of mortar is obviously increased; the use amount of cement is effectively reduced; the intensity of mortar is increased by above 25%; the 14d tensile adhesive intensity is increased by above 13%; the cost of the water-retaining and thickening material is reduced by above 16%; a utilization way of the industrial by-product, namely cellulose, separated from corn straws, is effectively provided; furthermore, the utilization value is higher. The cost of the water-retaining, thickening and reinforcing additive for cement mortar, disclosed by the invention, is 4000-8000 yuan / ton, and the water-retaining, thickening and reinforcing additive for cement mortar, disclosed by the invention, is wide in source of used raw materials, proper in cost, convenient to use, high in operability and beneficial to popularization.
Owner:SHANDONG HUASEN CONCRETE

Method for preparing natural gas from yellow phosphorus tail gas and production device using the method

The invention relates to a method for preparing natural gas from yellow phosphorus tail gas and a production device using the method. The method comprises the following step: by using yellow phosphorus tail gas and coke oven gas as raw gases, carrying out methanation reaction in a methanation device by using hydrogen in the raw gases and carbon monoxide and carbon dioxide in the raw gases, wherein the ratio of the yellow phosphorus tail gas to the coke oven gas is controlled to control the ratio of the hydrogen to the carbon monoxide and carbon dioxide in the reaction system, so that the contents of the hydrogen, carbon monoxide and carbon dioxide in the gas after reaction respectively conform to the requirements for natural gas, and the volume ratio of the yellow phosphorus tail gas to the coke oven gas is 1:(9-12). The production device comprises the methanation device, a raw gas purification device before the methanation device, and a natural gas purification device after the methanation device, wherein the methanation device is a three-stage or four-stage methanation facility. The method has the advantages of reasonable technological design and low cost, recycles the yellow phosphorus tail gas, avoids waste of resources and environmental pollution, and enhances the economic benefit.
Owner:北京中凯环能高科技有限公司

Extraction process of biological crude alkali from leaves of jatropha curcas

The invention provides an extraction process of biological crude alkali from leaves of jatropha curcas, and belongs to the technical field of biotechnology. The extraction process comprises the following steps that a, hoarded leaves of the jatropha curcas are naturally air-dried or dried by a dryer, and is smashed by adopting a pulverizer, the size is less than or equal to 5 mm after sieving, andstorage is conducted at room temperature; b, 1.0-5.0 kg of the sieved leaves of the jatropha curcas is dispersed into 10-50 L of an ethanol/ water mixed solution for extraction, and ultrasonic treatment is conducted while stirring; c, residues are removed by filtration, after ethanol of an obtained yellow solution is removed by rotary evaporation, 1-5 L of an acetic acid aqueous solution or a hydrochloric acid aqueous solution is added for immersing for 0.5-1.0 h; and filtering is conducted to obtain yellow water phase; d, the above steps are repeatedly conducted for 2-4 times; e, an alkalineaqueous solution such as sodium hydroxide is added into water phase obtained in the step d, and the pH value is adjusted to about 10.0; and f, the combined mixed solution in the step e is filtered orsubjected to suction filtration by a vacuum pump, and then is extracted for 3 times with a water-insoluble organic solvent with equal volume and low boiling point, and the combined organic phase is dried, filtered and rotary-evaporated to obtain the biological crude alkali.
Owner:凉山德农生物能源股份有限公司

A method for increasing production of low-carbon olefins and aromatics by steam cracking of coker gasoline

The invention relates to a method for increasing yields of low-carbon olefins and aromatics by coker gasoline steam cracking, which comprises the following steps: raw oil is subjected to ionic liquid solvent extraction to remove aromatics and olefins, thereby obtaining a hydrocarbon stream in which the aromatic content is lower than 2 wt% and the olefin content is lower than 5 wt%; the hydrocarbon stream enters a steam cracking procedure to be subjected to cracking and separation; the crude aromatic stream is sent into a cracked gasoline hydrogenation unit together with cracked gasoline, and the olefins are hydrogenated and sent into a hydrocracked gasoline aromatic extraction unit to separate the aromatic product; and the obtained stream containing rich saturated hydrocarbons is returned and introduced into the cracking procedure together with a petroleum hydrocarbon stream containing less aromatics to react and produce the low-carbon olefins. The method provides an effective utilization way for the coker gasoline raw material, widens the ethylene sources, recycles the non-aromatic components by using the original cracking hydrogasoline aromatic extraction system, and increases the yields of the low-carbon olefins and aromatics in the cracking process.
Owner:CHINA PETROLEUM & CHEM CORP +1

Phosphogypsum granular soil and preparation method thereof

InactiveCN110950622AGood water and fertilizer retention functionHigh water retentionCalcareous fertilisersGrowth substratesBound waterSoil science
The invention relates to the field of granular soil, particularly to phosphogypsum granular soil and a preparation method thereof. Based on the problem of waste of resources due to phosphogypsum stacking, the invention provides phosphogypsum granular soil and a preparation method thereof so as to achieve the efficient reuse of phosphogypsum and prepare granular soil with good water and fertilizerretention effects. According to the invention, by using phosphogypsum as a main raw material, in a process for changing dihydrate gypsum in the phosphogypsum into insoluble anhydrous gypsum, a large amount of free water and bound water are lost to form a large number of pores formed in granular soil, and expanded perlite is added, is a white granular material with a honeycomb-like structure inside, and has low stacking density and strong water retention function, so that the granular soil has good water and fertilizer retention functions, and has the water retention rate of 65-85%; the granular soil has high strength under the dual action of silica sol bonding and phosphogypsum self-solidification, and the breakage rate under 28 MPa is smaller than 25%; and the granular soil prepared by the method can well meet the growth requirements of plants.
Owner:GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD

A method for increasing production of low-carbon olefins and aromatics by steam cracking of coker gasoline

The invention relates to a method for increasing yields of low-carbon olefins and aromatics by coker gasoline steam cracking, which comprises the following steps: aromatic extraction by an ionic liquid solvent and olefin extraction by an ionic liquid solvent are respectively performed to pretreat raw oil so as to remove aromatics and olefins, thereby obtaining a hydrocarbon stream in which the aromatic content is lower than 2 wt% and the olefin content is lower than 4 wt%; the hydrocarbon stream enters a steam cracking procedure to be subjected to cracking and separation; the crude aromatic stream is sent into a hydrocracking gasoline aromatic extraction unit to separate the aromatic product; and the obtained stream containing rich saturated hydrocarbons is returned and introduced into the cracking procedure together with a petroleum hydrocarbon stream containing less aromatics to react and produce the low-carbon olefins. The method provides a proper application way for coker gasoline, widens the cracking raw material sources, recycles the non-aromatic components by using the original cracking hydrogasoline aromatic extraction system, and increases the yields of the low-carbon olefins and aromatics in the cracking process.
Owner:CHINA PETROLEUM & CHEM CORP +1

Gaseous hydrocarbon steam conversion upper-section catalyst and preparation method thereof

The invention belongs to the technical field of hydrocarbon-based steam conversion, and particularly relates to a gaseous hydrocarbon steam conversion upper-section catalyst and a preparation method thereof. According to the catalyst, nickel and rare earth are used as active components; the NiO content in the catalyst is 5-25 wt%, and the rare earth metal oxide content is 0.3-15 wt%; the active components nickel and rare earth are loaded on the carrier by using a co-impregnation method; and the carrier preparation method comprises: (1) FCC catalyst waste agent treatment, wherein a FCC catalystwaste agent is calcined in an air atmosphere, and crushing and screening are performed to obtain powder, and (2) carrier preparation, wherein the powder, magnesium oxide, an anti-carbon auxiliary agent, a pore-forming agent, a lubricant and a binder are mixed, ball milling, kneading, granulation and extrusion molding are performed to obtain a raw ring, and curing, drying and roasting are performed to obtain the carrier. According to the present invention, the catalyst has advantages of good carbon resistance, good mechanical strength and good conversion activity, and is used for preparing hydrogen or carbonyl synthesis gas by combining with the lower-section catalyst; and the preparation method has characteristics of simple process and low cost.
Owner:CHINA PETROLEUM & CHEM CORP
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