9results about How to "Climate change mitigation" patented technology

The invention belongs to the technical field of carbon dioxide capture low-energy-consumption safe storage methods, and discloses a marine diesel engine tail gas carbon dioxide capture low-energy-consumption safe storage method which comprises a carbon dioxide capture system, a low-energy-consumption system and a safe storage system. The carbon dioxide trapping system is mainly used for separating carbon dioxide from tail gas of a marine diesel engine for subsequent sealing or utilization, the carbon dioxide trapping system is divided into a pretreatment unit and a carbon trapping unit, and the carbon dioxide can be conveniently transported and sealed through liquefaction storage; the volume of the liquefied carbon dioxide is greatly reduced, long-distance transportation and storage are facilitated, the transportation cost is reduced, the liquefied carbon dioxide can also be used as a resource, for example, the liquefied carbon dioxide can be used in the fields of industrial raw materials, refrigerants, food preservation and the like, sustainable utilization of the resource is achieved, and the energy storage mode has the advantages of low cost, high efficiency, long service life and the like. And the energy utilization efficiency can be improved.

The invention relates to the technical field of fossil energy hydrogen production, and discloses a combined heat and power generation coupled natural gas reforming hydrogen production system and a control method. The combined heat and power generation coupled natural gas reforming hydrogen production system comprises a raw material pretreatment unit, a natural gas conversion unit, a combined heat and power generation unit, a medium and low temperature conversion unit and a gas separation unit, the combined heat and power generation coupling natural gas hydrogen production control method comprises the steps that the heat and power distribution ratio of combined heat and power generation is calculated and compared with the water vapor demand quantity under the steady-state working condition, operation selection is conducted according to the comparison result, the heat and power distribution ratio of combined heat and power generation is calculated, and the final distribution ratio of heat and power is obtained. And stable supply of steam and electric quantity of the combined heat and power generation unit is realized. The gradient utilization of energy is realized, the waste heat utilization diversity is increased, and the heat utilization efficiency of the natural gas hydrogen production process is improved.

This invention relates to the field of organic waste gas recovery and resource utilization technology, and particularly to a low-volume methane / VOCs co-recovery system, method, and application in oil and gas development processes. The system includes a waste gas generating device, a waste gas collecting device, a waste gas conveying device, and an adsorption storage device connected in sequence. The adsorption storage device is filled with layered adsorption materials, which include a layered adsorption layer of heavy components, a layer of intermediate components, a layer of light components, and a protective bed, stacked sequentially. This invention, based on the adsorption storage concept and utilizing the inherent potential energy of the oil and gas development process, achieves efficient recovery of methane / VOCs from intermittent emission sources, reducing greenhouse gas methane and VOCs emissions and improving oil and gas product yields.

The invention discloses a preparation method of flow-state solidified soil for capturing and immobilizing carbon dioxide, which comprises the following steps: step 1, carrying out cross-linking reaction and pyrolytic reaction on coal pitch and an organic high-molecular polymer solution at 300-450 DEG C to obtain porous coal pitch particles, the organic high-molecular polymer solution at least comprises any one of a polyacrylonitrile solution and a polyvinylpyrrolidone solution; and 2, mixing the porous coal pitch particles, cement, fly ash, clay, water and an efficient water reducing agent, and stirring to form the flow-state solidified soil for capturing and immobilizing carbon dioxide. The prepared flow-state solidified soil has excellent carbon dioxide capturing, utilizing and storing capacity, is small in environmental pollution, and can meet the requirements for strength, durability and fluidity of the flow-state solidified soil in engineering application at the same time.

The invention discloses a heat exchange carbon control design method based on a refrigerant GWP value, and relates to the technical field of fire safety. According to an ecological design method of a regenerative heat exchange tube based on the refrigerant GWP value, firstly, a carbon footprint energy efficiency value serves as a design index when the regenerative heat exchange tube is designed; the carbon emission amount of a refrigerating system where the regenerative heat exchange pipe is located can reach the controllable amount within a certain time range, the carbon emission requirement of the ecological environment is met, on the premise that the carbon emission requirement of the ecological environment is followed, the qualitative temperature of the condenser side and the qualitative temperature of the evaporator side are calculated firstly, and the physical property parameters of fluid on the two sides are obtained; calculating the heat exchange amount and the countercurrent logarithmic average temperature difference, estimating the heat transfer area of a backheating heat exchange pipe, preliminarily estimating and selecting the pipes on the two sides and specifications, adjusting the parameters of the pipes on the two sides and the specifications by evaluating the pressure drop on the two sides, and calculating the heat transfer area of the backheating heat exchange pipe on the premise that the pressure drop standard conditions of the pipes on the two sides are met. And the real heat transfer area parameter range of the regenerative heat exchange tube is continuously considered, so that the heat exchange efficiency of the regenerative heat exchange tube is greatly improved.

The present application relates to the field of carbonate cement, and specifically discloses a polycrystalline carbonate cement and a preparation method thereof, wherein the cement is prepared by carbonizing raw materials, and the raw materials include the following components by weight: 700-900 parts of recycled micropowder, 100-300 parts of salt lake magnesium slag, 13.35-66.75 parts of α-aminopropionic acid, 117-350 parts of water, and 1400-1500 parts of filler. The present application can not only achieve low carbon emissions and lower production energy consumption, but also obtain concrete with good mechanical properties.

The utility model discloses a kitchen waste fermentation device, and relates to the technical field of kitchen waste, the kitchen waste fermentation device comprises a microwave cracking device, the microwave cracking device comprises a cracking machine main body, a first feed pump, a microwave generator, a control panel and an air outlet, the first feed pump is fixedly arranged on the top of the cracking machine main body, and the microwave generator is arranged on the top of the cracking machine main body; the microwave generator is fixedly installed on the left side of the cracking machine body, the control panel is fixedly installed on the front face of the cracking machine body, and the air outlet is formed in the right side of the first feeding pump. According to the kitchen waste fermentation device, through the arrangement of the microwave cracking device, kitchen waste cracking carbonization with high-efficiency operation and harmless solid waste can be achieved, it is ensured that the human health and the natural environment are not damaged, the treatment mode is centralized, the treatment efficiency of the fermentation device can be effectively improved, and in the cracking process, the energy consumption is reduced. Toxic and harmful high-molecular organic substances are subjected to a series of reactions, so that molecular substances are decomposed and escaped.

The application provides a kind of water level fluctuation river beach zone degraded wetland Juncus effusus community directional recovery method, belongs to wetland water environment ecological management and landscape restoration technical field.The application includes the following steps: (1) the hydrological condition of river beach zone degraded wetland is investigated, and the target recovery area and the transplanting height and time of Juncus effusus are determined: the transplanting height of low-lying area is greater than or equal to 30 cm, and the transplanting is carried out in early May; the transplanting height of water level change area is greater than or equal to 25 cm, and the transplanting is carried out in early May; the transplanting height of humid area is greater than or equal to 20 cm, and the transplanting is carried out in mid-late May; (2) the degradation degree of Juncus effusus in the target recovery area is investigated, and the transplanting density of Juncus effusus is determined: the natural recovery is carried out in slight degradation area, 20-30 plants / m 2 are transplanted in moderate degradation area, and 40-60 plants / m 2 are transplanted in severe degradation area.The application can not only improve the growth adaptability of Juncus effusus, but also enhance the ecological function of wetland, and provide a new solution for ecological protection and sustainable development.

The invention discloses an urban agglomeration carbon sequestration capability driving factor key threshold determination method, and relates to the field of ecological environment, and the method comprises the steps: determining the causal effect between each driving factor and the carbon sequestration amount in a historical data set based on causal reasoning; determining reliable driving factors of the carbon sequestration amount according to a causal effect, and training a carbon sequestration amount regression model in combination with historical carbon sequestration amount data; calculating a Shapley value of each feature in the training sample; and drawing a dependency graph of each driving factor based on the Shapley value of each feature in all the training samples, determining a change point of scatter data in each dependency graph by adopting a change point detection method, and determining a key threshold value of the corresponding driving factor according to a driving factor slope value corresponding to the change point. According to the method, the internal causal mechanism of the driving factors and the carbon sequestration amount can be analyzed, the key threshold value is confirmed, and the urban agglomeration carbon cycle can be deeply and scientifically understood.