40 results about "Oxidative pyrolysis" patented technology

The invention belongs to the technical field of hydrometallurgy and chemical production, and discloses a method for treating waste secondary batteries. By burning in two stages in a rotary kiln, the furnace temperature is first maintained at 100-150°C, and the waste secondary batteries are The front part of the furnace is roasted for 30-60 minutes to ensure that the sealing ring of the waste secondary battery is fully pyrolyzed and destroyed, so that the hydrogen and organic solvent in the battery can be released; Maintain at 300~500°C to fully oxidize, pyrolyze, and burn the organic matter in the waste, and effectively control the generation of odor and nitrogen oxides, so that the generated gas can achieve the effect of no peculiar smell, no foul smell, and complete combustion. The treatment method provided by the invention has a reasonable design, is incinerated first and then crushed, has a high crushing rate, a high recovery rate of valuable elements, can avoid high-temperature incineration and explosion accidents, is safe and pollution-free, and is suitable for popularization.

Provided is a simple method for regenerating a zeolite membrane which has been exposed to water. The method for regenerating a zeolite membrane is a method for regenerating a zeolite membrane which is formed on a ceramic porous body and subjected to removal treatment of structure directing agent. Heating is performed at a regeneration temperature at which the difference in ratio of thermal expansion amount between the ceramic porous body and the zeolite membrane is 0.3% or less when 40° C. is set as datum. The regeneration temperature is preferably a temperature not exceeding the oxidative pyrolysis temperature of the structure directing agent used in the formation of the zeolite membrane.

The invention relates to carbon black having a C-14 content greater than 0.05 Bq / g and a ratio ΔD50 / Dmode of the aggregate size distribution of less than 0.7. The carbon black is produced by thermal oxidative pyrolysis or thermal cleavage of the carbon black raw material in that the carbon black raw material contains renewable carbon black raw materials and an oxygen deficiency is present in the pyrolysis / cleavage reaction. The carbon blacks can be used in rubber and rubber mixtures, plastic, printing inks, inks, inkjet inks, toners, lacquers, paints, paper, adhesives, batteries, pastes, bitumens, concrete, and other building materials and as reducing agents in metallurgy.

The invention discloses a preparation method of a Cu-MOF / carbon dot composite catalyst doped with CuO nanoparticles and the application of the catalyst for electrocatalytic nitrogen reduction at room temperature, belonging to the technical fields of catalytic technology and nanocomposite materials. The main step is to convert the ligand H 6 L solution and Cu(NO 3 ) 2 3H 2 O and glucose were blended to obtain a raw material mixture; the raw material mixture was heated at 90°C for 2 days to obtain a glucose-doped polynitrogen Cu-MOF crystal; the glucose-doped polynitrogen Cu-MOF crystal was placed in the air atmosphere of a tube furnace Oxidation-pyrolysis at 300 °C for 2 h to prepare CuO nanoparticles-doped Cu-MOF / carbon dot composite catalyst. The raw materials used in the preparation of the catalyst have low cost and simple process, and the catalyst is used for electrocatalytic reduction of nitrogen into ammonia at room temperature, and has good catalytic performance and industrial prospect.

The invention discloses a preparation method for a natural cream flavour, which is a method for preparing the cream flavour by way of the dry fractionation of cream in combination with the oxidative pyrolysis technology and the enzymatic hydrolysis technology. The preparation method includes the following steps: cream is adopted as material, and the cream is divided into a component A and a component B within different melting point ranges according to the melting point of each component in the cream or the different intersolubilities of the cream under different temperatures, and therefore is separated; the air is then added under the stirring condition, so that the component A can be heated and oxidated, and thereby oxide C is produced; the component B and the oxide C are mixed and enzymatically hydrolyzed, and thereby the cream flavour is prepared. The method fractionates the different components of the cream, and pertinently carries out oxidation and oxidative pyrolysis, the cost can be greatly saved, the high-yield and high-efficiency cream flavour can be obtained, the technique for preparing the cream flavour by utilizing the technique provided by the invention and enzyme source is simple, and is suitable for industrialized production, the product has the advantages of both zymolyte and oxide, and the aroma is mellow, rich, strong and natural.

The invention relates to the technical field of environmental protection, in particular to a desorption pyrolysis process of a VOCs waste gas adsorbent. Its characteristics are: start the feeding system to feed materials to the vertical channel, the adsorbent moves continuously in the vertical channel from top to bottom under the action of gravity, and the air injection header reuses the tail gas discharged from the fire channel to purge the adsorption in the vertical channel and then mixed with the desorbed VOCs waste gas and sent to the pyrolysis chamber for oxidative pyrolysis through the grate brick at the bottom of the desorption chamber. The excess oxygen in the gas oxidizes and pyrolyzes it, and the tail gas flows into the smoke exhaust header, and the exhaust gas is collected by the air injection header and re-entered into the vertical channel. The return ratio is designed to be 1:10; the air distribution plate will pass through the VOCs exhaust gas The exhaust tail gas treated by the environmental protection purification facility is introduced, and the tail gas flows into the adsorbent that is purged and cooled and paved on the chain-driven grate bed row through the gap between the adjacent grate bed rows, and quickly completes the process of mass transfer and heat transfer with the adsorbent particles, and then Then it is discharged through the smoke outlet of the kiln box.

The invention provides a method for injecting high-pressure air into a low-permeability reservoir to perform oxidative pyrolysis and displacement of oil. Before air displacement for oil extraction is performed, high-temperature hot water is firstly injected to form a first slug, then three-phase nitrogen foam is injected to form a second slug, an injected air and the three-phase nitrogen foam mixed-phase substance serves as a third slug, then high-pressure air is injected to perform air displacement for oil extraction, and high-pressure air injection is conducted on stratum under the pressure of 25-50 MPa. The method can effectively conduct viscosity reduction and cooling on formation oil at the initial stage of the air displacement, a round oxidative pyrolysis zone is rapidly formed in the oil layer, the liquidity of the crude oil in an oil reservoir is improved, the low-permeability reservoir originally difficult to develop is improved, and the recovery rate is improved in a long-acting mode. The method is suitable for the low-permeability reservoir, the optimum condition is the reservoir depth of 1300-4900 meters, the reservoir thickness is more than 2.5 meters, the reservoir temperature is greater than 55 degrees, the oil saturation is above 30%, the permeability is greater than 1 millidarcy, and the connectivity is above 80%.

The invention relates to the technical field of environmental protection, in particular to a recycling process system for treating VOCs waste gas. It is characterized in that it includes a desorption pyrolysis furnace, a chain drive grate bed, an air induction system, and an adsorbent moving bed; the desorption pyrolysis furnace includes a desorption pyrolysis furnace body and a feeding system; the desorption pyrolysis furnace body There are fire passages and vertical passages designed, the fire passages are for the circulation of high-temperature flue gas, and the vertical passages are for the moving and falling of the adsorbent. The fire passages and vertical passages are adjacent to each other; the feeding system includes storage tanks, air injection headers, The tail gas discharged from the flue is introduced into the purge adsorbent, and then mixed with the desorbed VOCs waste gas and sent to the pyrolysis chamber for oxidation and pyrolysis through the grate brick at the bottom of the desorption chamber; the chain drive grate bed includes material legs and chain drive grate bed body; The chain drive grate bed body is designed with a kiln box and a chain drive grate bed row. The kiln box is designed with a smoke exhaust port. The chain drive grate bed row includes a sprocket, a chain, a grate bed row, and an air distribution plate. The exhaust gas from the exhaust tube of the moving bed is introduced into the air distribution plate of the chain drive grate bed.

The invention provides a method for preparing flavored powder without oil. The method uses refined oil and natural seasoning materials containing protein, active peptide, carnosine, amino acid, nucleotide and vitamin as main raw materials, and includes the following main technical processes: (1) Oxidative pyrolysis of refined oil; (2) Maillard reaction of pyrolysis oil and natural seasoning to obtain flavor oil; (3) Embedding flavor oil microcapsules and drying powder to obtain Taste powder without fat product. The product not only contains high fat, but also contains complex natural seasonings, which have multiple flavoring and flavoring effects.

The invention discloses a high-cis-1,4-content hydroxyl-terminated polybutadiene liquid rubber and a preparation method thereof. The method includes following steps: (1) preparing epoxidized butadiene rubber from butadiene rubber; (2) preparing high-cis-1,4-content aldehyde group-terminated polybutadiene liquid rubber from the epoxidized butadiene rubber; (3) preparing high-cis-1,4-content aldehyde group-terminated polybutadiene liquid rubber from the butadiene rubber in a one-pot manner; (4) reducing the high-cis-1,4-content aldehyde group-terminated polybutadiene liquid rubber to prepare the high-cis-1,4-content hydroxyl-terminated polybutadiene liquid rubber. In the method, the high-cis-1,4-content hydroxyl-terminated polybutadiene liquid rubber is prepared from the butadiene rubber and the content of cis-1,4 can reach 95.0-99.0%. A number-average molecular weight of the high-cis-1,4-content hydroxyl-terminated polybutadiene liquid rubber can be regulated between 2000 g / mol and 10000 g / mol. A molecular weight distribution is 1.2-3.0 and a degree of functionality is 1.9-2.2. On the basis of excessive supply in raw rubber of butadiene rubber and increased tensing situation of petroleum sources, by means of the method, the high-cis-1,4-content hydroxyl-terminated polybutadiene liquid rubber can be prepared through oxidative pyrolysis of the butadiene rubber, so that the method has a quite important practical significance.

The invention relates to oxidative pyrolysis of hydrocarbon feedstock. A method of oxidative pyrolysis comprises heating hydrocarbon feedstock, heating a steam-oxygen mixture, combusting the hydrocarbon feedstock in vapors of the steam-oxygen mixture in a special reactor, rapidly cooling the resulting incomplete combustion products of the chemical reactions in two steps, and then sending the cooled steam-gas mixture into a fractionation unit. A device for hydrocarbon pyrolysis comprises a chamber for mixing the steam-oxygen mixture and the feedstock, a pyrolysis chamber and a coking reactor, a device for heating the hydrocarbon feedstock and a device for heating the steam-oxygen mixture which are connected to the mixing chamber, a coking reactor supplied with a device for feeding cooling liquid into the pyrolysis gas stream, a separation unit connected to the coking reactor, and a fractionation unit equipped with an additional device for feeding cooling liquid. The technical result is highly cost-effective and environmentally friendly recovery of heavy petroleum residues by rapid coking that produces a high-quality coke, and the production of aromatic compounds without the construction or use of separate specialized installations.

A process for preparing a gasoline octane boosting composition, including contacting a pyrolysis oil with a non-thermal oxygen plasma to produce an oxidized pyrolysis oil; and mixing the oxidized pyrolysis oil with a gasoline additive to produce the gasoline octane boosting composition. The gasoline octane boosting composition can be used in a gasoline blend.

The invention relates to the technical field of environmental protection, in particular to a VOCs waste gas adsorbent desorption pyrolysis furnace. Its features are: including desorption pyrolysis furnace body and feeding system; the desorption pyrolysis furnace body is designed with fire passage and vertical passage, the fire passage is for the circulation of high-temperature flue gas, the vertical passage is for the moving and falling of adsorbent, the fire passage and vertical passage are The road is adjacent to the building masonry; the middle partition arch divides the desorption pyrolysis furnace body into upper and lower areas, namely the upper desorption pyrolysis area and the lower heat storage area; the feeding system includes storage tanks, air injection headers, air injection The header box introduces the tail gas discharged from the flue into the purge adsorbent, and then mixes with the desorbed VOCs waste gas and sends it to the pyrolysis chamber for oxidation and pyrolysis through the grate brick at the bottom of the desorption chamber.