11 results about "Carbon dioxide increased" patented technology

The utility model discloses a greenhouse carbon dioxide release-increasing blending system, which belongs to the technical field of greenhouse planting and comprises a controller, a carbon dioxide liquefaction storage tank, a carbon dioxide conveying main pipeline, a pressure regulating electromagnetic valve, a planting area blending electromagnetic valve, a planting area carbon dioxide concentration sensor and a planting area carbon dioxide distribution pipe. The carbon dioxide liquefaction storage tank is connected with the planting area allocation electromagnetic valve through a carbon dioxide conveying main pipeline, the planting area allocation electromagnetic valve is connected with the planting area carbon dioxide distribution pipe through a carbon dioxide conveying branch pipeline, and the planting area carbon dioxide concentration sensor transmits carbon dioxide concentration information to the controller. And the controller regulates and controls the pressure regulating electromagnetic valve and the planting area allocation electromagnetic valve. According to the application, the maximum concentration of carbon dioxide in the greenhouse planting area can reach 1000ppm, the concentration can be accurately controlled within a set concentration range according to the needs of planted crops, and the method has the characteristics of being accurate in carbon dioxide concentration regulation and control, safe and reliable.

In Hydrogenophilus bacteria, when one or more of three lactic acid utilizing enzyme genes on the genome of the Hydrogenophilus bacteria is disrupted and a lactate dehydrogenase gene and / or a malate / lactate dehydrogenase gene is introduced thereto, the lactic acid production ability is significantly improved. The inventors of the present invention have identified three lactic acid utilizing enzyme genes of the Hydrogenophilus bacteria. In addition, by introducing a lactate permease gene into the transgenic bacteria, the lactic acid production ability is further improved. The transgenic bacteria of the present invention efficiently produce lactic acid using carbon dioxide as the sole carbon source. That is, the transgenic bacteria can efficiently produce a raw material for biodegradable plastic while solving the global warming problem caused by the increase in carbon dioxide.

The application discloses a method for constructing an internal dumping site based on a fly ash-based cementing material carbon dioxide storage, and utilizes the cementing properties of fly ash of a pit mouth coal-fired power plant to prepare a fly ash-based cementing material with super high content, and utilizes the high-strength fly ash-based cementing material to construct a carbon dioxide storage, and utilizes a cement-free low-strength fly ash-based cementing material to backfill an open-pit mine pit, so that the resource utilization and efficient collaborative disposal of fly ash solid waste are realized; the carbon dioxide storage is constructed in the internal dumping site space, the open-pit mining space is effectively utilized, and the problem of insufficient material for land reclamation backfilling in the late mining stage is solved; the carbon dioxide storage reinforced by the anchor rod prestress has high strength and large internal space, the mine pit bottom plate impermeable layer and the overlying clay cover layer increase the airtightness, and the safe and efficient large-scale storage of critical state carbon dioxide is realized; the fly ash-based cementing material can mineralize carbon dioxide in a humid environment, increases the carbon dioxide storage amount, and improves the carbon dioxide storage strength and airtightness.

A method for designing low-carbon concrete compositions, all compositions being capable of absorbing CO2. Low-carbon concrete, all compositions of which are capable of absorbing CO2, comprises cement, supplementary cementitious materials, recycled aggregates, recycled sand, hollow glass microspheres, a superplasticizer, and mixing water. The compositions completely sequester CO2, increasing the amount of carbon captured in the low-carbon concrete, reducing carbon emissions in the concrete industry, and providing environmental benefits. When recycled aggregates and recycled sand are subjected to high-temperature and pressure carbonization, their CO2 absorption is significantly increased, and the performance of the recycled aggregates and recycled sand is improved, resulting in improved workability, mechanical properties, and durability of the concrete.Using hollow glass microspheres to encapsulate CO2 increases carbon capture capacity. At the same time, the ball bearing effect can be used to improve the workability of concrete. Figure 1.

The application discloses a kind of integrated heat storage flexible power generation system and operating method, belong to coal-fired power generation technical field.The integrated heat storage flexible power generation system provided by the present application, by coupling heat storage system, heat releasing system and supercritical water gasification technology deeply, build the two-way regulation ability of heat storage and heat release of coal supercritical water gasification power generation system, by adjusting first valve and second valve, recover the high-temperature heat of synthesis gas at the outlet of supercritical water gasification reactor to reduce power output at load low point, release stored heat to carbon dioxide at the outlet of carbon dioxide compressor at load peak, increase power output, can effectively respond to load fluctuation, enhance the peak shaving capability of system, meet the flexible operation demand of modern power grid;By the combination of heat storage system and heat releasing system, optimize energy distribution, reduce irreversible heat loss, to improve the comprehensive energy utilization efficiency of coal-fired power generation.

The invention is applicable to the technical field of biochar preparation, and provides low-ash biochar and a preparation method thereof. According to the invention, lignocellulose agricultural and forestry wastes are used as raw materials, so that the improvement of a waste biomass dealkalization process is realized. By introducing carbon dioxide and utilizing the excellent fluidity of the carbon dioxide, the lignocellulose forestry and agricultural residues and the acid glycosyl natural eutectic solvent are promoted to be fully mixed, the viscosity of a reaction system is reduced, mass transfer of substances is promoted, the reaction activity is improved, and ash separation is promoted; the effect of separating ash is achieved through the dissolution effect of the acidic glycosyl natural eutectic solvent on alkaline earth metal in biomass. Besides, the pressure of the reaction system is increased through carbon dioxide, so that the contact effect of the biomass and the acidic glycosyl natural eutectic solvent is improved, the proton supply capacity of the solvent is improved, the ash removal rate is increased, and the highest ash removal rate of the method reaches 96.8%.

The invention discloses an efficient anti-bonding stirring device for high-viscosity solid waste soil and a carbon storage method. Comprising a hob, a rotating shaft, a vibration filter screen, a feeding hole and a discharging hole, the plurality of hobs are divided into a plurality of groups and are uniformly and annularly mounted on the rotating shaft; a plurality of rotating shafts are arranged, and the plurality of rotating shafts are stacked and mounted on the rack in a multi-row shape; a fluted disc is arranged on each rotating shaft; the rotating shafts in the same row are in transmission connection; the vibrating screen is obliquely arranged above a hopper at a feeding hole of the stirring device; in practical application, the stirring hob can keep clean and non-sticky even for high-viscosity solid waste soil which is high in viscosity and easy to adhere, so that the stirring uniformity and the stirring quality are remarkably improved; in the stirring process, carbon dioxide with different pressures and flows can be injected into the stirred high-viscosity solid waste soil through the air outlet holes, the fluidity of the high-viscosity solid waste soil is improved, and the carbon storage function in efficient stirring is achieved.

A method for retaining the freshness of cut cabbage according to the present invention includes: a step (I) for storing cut cabbage (A) and an atmosphere adjusting agent package (B), which has oxygen absorbing capacity, in a packaging material (C) to obtain a vegetable package (X); and a step (II) for holding the vegetable package (X). In step (I), the vegetable package (X) satisfies the following requirements (i) and (ii). Requirement (i) is that the ratio of the oxygen reduction rate to the oxygen exchange rate is 0.4 to 2.0. Requirement (ii) is that the ratio of the rate of carbon dioxide increase to the rate of carbon dioxide exchange is 0.2 to 2.0.

The application discloses a kind of heteropoly acid supported bimetallic center catalyst and its preparation method and application, its preparation includes the following steps: after dissolving heteropoly acid, anion solution is obtained by acidification;After dissolving ruthenium salt and cesium salt, cation solution is obtained by acidification;Anion solution and cation solution are mixed and reacted, and the catalyst of heteropoly acid supported metal single atom is obtained by centrifugation, washing, drying and grinding to the precipitate;After dispersion, it is mixed with Lewis acid solution and coupled reaction, and the catalyst is obtained after the precipitate is centrifuged, washed, dried and ground.The transition metal single atom is connected in series with Lewis acid in the application and is supported on polyoxometalate, and the obtained catalyst greatly improves the adsorption and activation of methane and carbon dioxide, and the synergistic effect in series connection catalyst makes the C-C coupling efficiency of methane and carbon dioxide increase, and the selectivity of target product acetic acid can be effectively improved.

The present invention is applicable to the technical field of biochar preparation, and provides a low-ash biochar and a preparation method thereof. The present invention uses lignocellulosic agricultural and forestry waste as raw materials to achieve an improvement in the process of dealkalization of waste biomass. The present invention introduces carbon dioxide and utilizes its excellent fluidity to promote the full mixing of lignocellulosic agricultural and forestry waste with an acidic sugar-based natural low eutectic solvent, thereby reducing the viscosity of the reaction system, promoting mass transfer of substances and improving reaction activity, and promoting the separation of ash. The acidic sugar-based natural low eutectic solvent is used to dissolve alkaline earth metals in biomass to achieve the effect of separating ash. In addition, increasing the pressure of the reaction system by carbon dioxide helps to improve the contact effect between the biomass and the acidic sugar-based natural low eutectic solvent and increase the proton supply capacity of the solvent, thereby improving the ash removal rate. The highest ash removal rate of this method reaches 96.8%.

Provided is a method for maintaining the freshness of cut lettuce, said method comprising: a step (I) for accommodating cut lettuce (A) and an atmosphere adjuster package (B) that has an oxygen absorption ability in a packaging material (C), thereby obtaining a vegetable package (X); and a step (II) for holding the vegetable package (X), wherein in the step (I), the vegetable package (X) satisfies requirement (i) and requirement (ii). Requirement (i) is that the ratio of an oxygen reduction rate to an oxygen exchange rate is 2.0-4.0. Requirement (ii) is that the ratio of a carbon dioxide increase rate to a carbon dioxide exchange rate is 2.0-4.0.