13results about How to "Realize joint production" patented technology

The present invention belongs to the technical field of microbial fermentation, and discloses a method for co-producing DHA and carotenoids by schizochytrium fermentation, wherein the method uses schizochytrium as a production strain to produce polyunsaturated fatty acids and carotenoids, adds an NADPH oxidase inhibitor to the fermentation medium, and adopts a fermentation method with staged temperature control. The present invention combines staged temperature-changing fermentation with the addition of an NADPH oxidase inhibitor during microbial fermentation, thereby achieving the co-production of DHA and carotenoids during schizochytrium fermentation, thereby obtaining microbial oils with high DHA and carotenoid content.

The application relates to a reaction coupling device and method for sulfur dioxide reduction and methane reforming, which comprises the following steps: mixing primary reaction raw gas with secondary reaction backflow gas, sulfur dioxide contained in the primary reaction raw gas and carbon monoxide, hydrogen and hydrogen sulfide contained in the secondary reaction backflow gas perform primary reaction to generate primary reaction outlet gas containing hydrogen sulfide; mixing the primary reaction outlet gas with secondary reaction raw gas, hydrogen sulfide contained in the primary reaction outlet gas and methane contained in the secondary reaction raw gas perform secondary reaction to generate secondary reaction outlet gas containing carbon monoxide, hydrogen and hydrogen sulfide; and sending part of the secondary reaction outlet gas back as secondary reaction backflow gas to be mixed with the primary reaction raw gas, and the rest of the secondary reaction outlet gas is separated or converted to obtain mixed gas containing carbon monoxide and hydrogen. Compared with the prior art, the application is suitable for by-product utilization in metallurgical and other industrial fields, and is low-temperature and high-efficiency sulfur and synthetic gas coupling production.

This application provides a system and method for the co-production of methanol and sponge iron through the resource utilization of tail gas. The system includes a biomass gasification unit, a methane cracking unit, a primary reduction unit, a secondary reduction unit, a catalyst regeneration unit, and a methanol synthesis unit. The processes of each unit are coupled. The two-stage reduction process allows the iron concentrate to undergo a secondary deep reduction after the primary pre-reduction, balancing the metallization rate of sponge iron with system energy consumption. Simultaneously, the tail gas is converted into resources, achieving the co-production of sponge iron and methanol. Results show that the purity of the target product, methanol, is greater than or equal to 99.5%; the metallization rate of the target product, sponge iron, is 92%–95%.

This invention provides a Rh / MnO nanocatalyst, its preparation method, and its application, comprising the following steps: A) adding a manganese source solution dropwise to a ligand solution to obtain a mixed solution; the ligand solution includes a complexing agent and a polyol; B) drying and calcining the mixed solution to obtain manganese oxide; C) mixing the manganese oxide and a rhodium source in water to obtain a mixed slurry; the mass ratio of the manganese oxide to the rhodium source is (75~150):(1~10); D) drying and calcining the mixed slurry to obtain a precursor; E) reducing the precursor in a reducing atmosphere to obtain the Rh / MnO nanocatalyst. The nanocatalyst of this invention exhibits high conversion rate and high selectivity in the direct synthesis of multi-carbon oxygen-containing compounds from syngas. The multi-carbon oxygen-containing compounds produced by the Rh / MnO catalyst provided by this invention contain a high proportion of ethanol and acetaldehyde, achieving the co-production of ethanol and acetaldehyde.

The invention discloses a method for preparing ultra-pure helium and co-producing ultra-pure hydrogen from ammonia purge gas, and relates to the technical field of gas separation. The method comprises the following steps: adsorbing and removing ammonia and other impurities by using an isobaric recovery tower and a pressure swing adsorption tower to obtain a material gas mainly containing helium, hydrogen and neon, separating by using a palladium tube to obtain high-purity hydrogen, and adsorbing and refining tail gas of the palladium tube by using a low-temperature adsorption tower and a special low-temperature adsorbent to obtain high-purity helium. The process method is simple in flow, and can effectively realize co-production of ultra-pure helium and ultra-pure hydrogen taking synthetic ammonia purge gas as a raw material, so that waste of hydrogen and helium resources is effectively avoided, meanwhile, the process omits tedious steps of multiple times of catalytic combustion dehydrogenation, deoxidation and drying, the process cost is effectively reduced, and the process economic benefit is improved.

This invention discloses a preparation process for the co-production of alicyclic epoxy resin and glycidyl ester epoxy resin, comprising the following steps: mixing epoxy resin raw materials, solvent, and hydrogen peroxide; adding acid anhydride to the reaction system in batches; filtering the reaction system after the reaction is completed to separate the liquid phase and by-product acid solid; obtaining alicyclic epoxy resin through a series of operations on the liquid phase; adding wet by-product acid solid and continuing to react with epichlorohydrin to finally obtain the corresponding glycidyl ester epoxy resin; and performing an epoxidation reaction by using cyclic anhydrides such as hexahydrophthalic anhydride and phthalic anhydride in combination with hydrogen peroxide to generate corresponding peroxy acids. The generated by-product dicarboxylic acid and excess raw material anhydride can be directly filtered out from the reaction system and used directly as raw materials for the production of glycidyl ester epoxy resin, thereby achieving the co-production of alicyclic epoxy resin and glycidyl ester epoxy resin.

This invention relates to the field of air separation technology, and provides an integrated oxygen and nitrogen co-production separation device and method. The integrated oxygen and nitrogen co-production separation device couples an air compressor, a purifier, a nitrogen generation membrane, a distillation column, and other equipment. Using air as raw material, the air is compressed by the air compressor, and after the purifier removes water and carbon dioxide, it enters the membrane device to separate nitrogen (purity ≥95%) and oxygen-enriched air (purity ≥30%). The nitrogen (purity ≥95%) undergoes single-stage distillation in distillation column I to achieve the co-production of high-purity gaseous nitrogen (purity ≥99.999%) and liquid nitrogen. The oxygen-enriched air undergoes two-stage distillation in distillation columns II and III connected in series to achieve the co-production of low-purity gaseous oxygen (purity ≥99.5%), liquid oxygen (purity 93%), and high-purity oxygen (purity ≥99.999%).

The present application relates to solid waste resource comprehensive utilization technical field, disclose a kind of calcination desulfurization-electric furnace reduction processing laterite nickel ore acid leaching residue method, comprising the following steps: S1.laterite nickel ore acid leaching residue and auxiliary material are used as raw material, oxygen-enriched air and first fuel are introduced into raw material to carry out calcination desulfurization, obtain sulfur-containing flue gas and desulfurization hot slag;S2.desulfurization hot slag obtained in S1 with second reducing agent is directly put into electric furnace and is reduced smelting, obtain molten iron, reduction smelting flue gas and reduction smelting slag, desulfurizer is added to the molten iron and is desulfurized, and iron ingot is prepared;S3.reduction smelting slag is obtained after water quenching treatment water quenching slag, the water quenching slag is mixed with excitation agent, after drying, grinding, obtain active micro-powder material.This method realizes laterite nickel ore acid leaching residue full resource comprehensive utilization, fully recycles residual valuable metal including Fe, Ni, realizes the full development and utilization of valuable metal, sulfur, tailings and other slag components.

The application belongs to the technical field of electrochemical catalysis and energy chemical industry, and discloses a copper-based composite catalyst, a preparation method, a dynamic potential stabilization method and application. A strategy of catalyst preparation and electrochemical operation is provided, which specifically comprises a Cu / Cu2O composite catalyst easy to prepare on a large scale, and a pulse potential operation method for dynamically maintaining the activity of the catalyst, so that efficient and stable co-production of furfural electro-oxidation and hydrogen production is realized.

The application discloses a kind of hydrocarbon conversion method and device, belong to coal bed gas technical field.The present application solves the problem that coal gas layer cannot fully play its resource value in prior art, including the following steps: step S1: raw gas is subjected to oxygen removal process in one-stage conversion, and raw gas A is obtained;Step S2: the obtained raw gas A is boosted, and raw gas B is obtained;Step S3: raw gas B is subjected to desulfurization, and desulfurized gas C is obtained;Step S4: desulfurized gas C is transported into the furnace tube of two-stage conversion furnace for hydrocarbon steam conversion reaction, and conversion gas D is obtained;Step S5: conversion gas D is transported into three-stage conversion furnace, and deep conversion reaction of methane is carried out, and conversion gas E is obtained;Step S6: after heat recovery, synthesis gas is obtained from conversion gas E.The present application provides three-stage conversion technology of hydrocarbon in view of the characteristics of high oxygen and nitrogen content in coal bed gas, solves the safe utilization problem of oxygen contained in coal bed gas and the problem of greenhouse gas emission polluting the environment.

The invention discloses a method for co-producing carbon-based solid acid and carbon quantum dots from rape seed cakes, the carbon-based solid acid and application thereof, and the carbon quantum dots and application thereof, and relates to the technical field of biomass conversion. The method for co-producing the carbon-based solid acid and the carbon quantum dots from the rape seed cakes comprises the following steps: mixing rape seed cake powder and water, and carrying out hydrothermal carbonization treatment to obtain a hydrothermal carbonization product; and carrying out solid-liquid separation on the hydrothermal carbonization product to obtain the carbon-based solid acid and the carbon quantum dots. According to the technical scheme, co-production of the carbon-based solid acid and the carbon quantum dots from the rape seed cakes is achieved, the prepared carbon-based solid acid is used for preparing the 5-hydroxymethylfurfural, and the advantage of being high in yield is achieved; the prepared carbon quantum dot is used for detecting baicalein or tetracycline, and has the advantage of wide detection range. According to the technical scheme, the rape seed cakes serve as raw materials, co-production of the carbon-based solid acid and the carbon quantum dots is achieved through a simple and safe hydrothermal method, and high economical efficiency and practicability are achieved.

The invention provides a method for producing hydrogen and single-cell protein through bacteria-algae co-culture, which comprises the following steps: artificially constructing a bacteria-algae co-culture system through aerobic bacteria with an aerobic effect and hydrogen-producing microalgae with a hydrogen-producing and oxygen-producing effect, and consuming oxygen in the system through the aerobic bacteria so as to promote the hydrogen-producing microalgae to produce hydrogen, so that the hydrogen-producing microalgae can produce hydrogen; meanwhile, single-cell protein products are generated, co-production of hydrogen and protein is achieved, phycomycetes protein obtained through co-culture can also be used as animal feed and aquatic bait and even serve as a protein source of human food, the production cost is greatly reduced, and benefits are improved. The bacteria-algae co-culture system does not need to add an expensive and toxic interference agent which easily pollutes the environment, the operation is simple, and the workload and the technical difficulty are far lower than those of mutant strain screening and gene modification.

The invention belongs to the technical field of microorganisms and discloses a method for promoting the co-production of DHA and squalene by Schizochytrium by combining an ion regulation strategy with a nitrogen enrichment strategy. In the method, Mn is added during the fermentation process of Schizochytrium to produce DHA and squalene. 2+ and sodium glutamate (nitrogen source), the ion regulation strategy combined with the nitrogen enrichment strategy in the process of Schizochytrium fermentation to produce DHA can achieve high yield of squalene. 2+ The concentration of sodium glutamate was improved to cultivate Schizochytrium, thereby ensuring that Schizochytrium produced DHA while increasing the production of squalene. By adding a trace amount of Mn 2+ It is used to enhance the activity of terpene synthase in the terpene synthesis pathway, thereby perturbing the metabolic network to increase the carbon flow to the biosynthesis of squalene, and can effectively promote the fermentation of Schizochytrium to produce DHA and squalene.