88 results about "Embodied carbon" patented technology

The invention relates to sludge bagasse active carbon and a preparation method thereof. The sludge bagasse active carbon is prepared from sewage treatment sludge and sugar refining industrial waste bagasse. The bagasse is added into the sludge to improve the carbon content of the sludge and the adsorptive property of sludge base active carbon, so that the problem that the adsorptive property of the sludge base active carbon is poor is solved; and the sludge is subjected to heavy metal removal to improve the using safety of the sludge base active carbon. The process comprises the following steps of: carrying out heavy metal removal on the sludge by adopting a certain technical means; drying the sludge and the bagasse, and then uniformly mixing the sludge and the bagasse according to a certain proportion; adding an activating agent ZnCl2 solution with a certain concentration to carry out immersion and activation; then carrying out pyrolysis under the protection of an inert gas; and washing and drying to obtain the active carbon. According to the preparation method, the active carbon is prepared from the sludge and the bagasse, the active carbon with good adsorptive property is prepared, and the resource utilization of the two types of industrial solid wastes is achieved at the same time, so that the sludge bagasse active carbon has good economic, social and ecological benefits.

The invention relates to a fly ash carbon content prediction method based on coal quality prediction and PSO-SVM, and the method comprises the steps: 1, selecting and constructing proper coal qualityinfluence parameters and coal quality feature parameters, constructing a coal quality prediction model based on a BP neural network, and carrying out the soft measurement of the coal quality of coal as fired through coal type matching; 2, constructing a support vector machine (SVM)-based fly ash carbon content prediction model. The method has the beneficial effects that the method can be used forsoft measurement of the carbon content of the fly ash, the model is optimized, and the prediction performance of the soft measurement model of the carbon content of the fly ash is further improved. Firstly, a BP neural network model is constructed for coal quality prediction by utilizing coal quality influence parameters so as to obtain relatively accurate coal quality test data; the fly ash carbon content prediction model provided by the invention integrates two technologies of coal quality prediction and fly ash carbon content prediction, realizes accurate measurement of the fly ash carbon content, and has important significance for improving the combustion economy of a boiler, reducing the coal consumption and improving the environment.

The invention discloses a boiler fly ash carbon content prediction method and system, and the method comprises the steps: obtaining and standardizing a historical data set of boiler operation, and enabling a standard data set to serve as a sample point; inputting the standard data set into a linear regression model, correspondingly outputting the carbon content of the flue gas fly ash, and training to obtain the linear regression model; inputting the standard data set and the obtained characteristics of the carbon content of the flue gas fly ash into an XGBoost model, correspondingly outputting the carbon content of the flue gas fly ash to obtain an initial XGBoost prediction model, and performing parameter optimization on the initial XGBoost model to obtain an optimal XGBoost prediction model; and inputting the standard data set into a recurrent neural network, correspondingly outputting the carbon content of the flue gas fly ash, training to obtain an initial neural network model, and performing parameter optimization on the initial neural network to obtain an optimal recurrent neural network. The outputs of the three models are subjected to linear regression to obtain a fusion model, the fusion model is used for predicting the carbon content of the flue gas fly ash generated by the boiler, and the prediction precision of the emission concentration of the carbon content of the fly ash is improved.

The invention belongs to the technical field of chemical coal gases, in particular to a method and a device using high temperature air and high temperature steam as gasification agents for coal gas production. According to the invention, coal gases are produced by using the air with a temperature of 120 to 220 DEG C and oxygen content of 20.93 percent (v/v) and the high temperature steam with a temperature of 120 to 220 DEG C as the gasification agents. Correspondingly, a heat exchanger, a control valve and a pipeline are additionally arranged in an original coal gas production device. According to the invention, the technical defects of gas production of a conventional normal-pressure fixed bed gas producer are well overcome; yield of a gas furnace and the calorific value of the coal gases are improved; carbon content in ash is reduced; sensible heat loss is reduced; standard coal consumption under the unit calorific value is reduced to 5 to 15 percent.

The invention provides an embodied carbon energy-based machine tool equipment product carbon emission quantification method. The method comprises three parts, i.e., machine tool equipment product material flow and energy flow analysis, a machine tool equipment product carbon emission quantification model and an embodied carbon energy-based carbon emission quantification method. A machine tool equipment product material flow and energy flow superposition principle is provided by analyzing the characteristics of energy flow and material flow; a carbon emission boundary model at a main lifecycle stage is established, and a machine tool equipment product carbon emission quantification principle is given based on an embodied carbon energy concept; an embodied carbon energy-based specific carbon emission calculation formula is obtained according to the characteristics of the main lifecycle stage. The invention adopts an embodied carbon energy quantification method, which takes a product as the boundary, for providing data support for a low carbon design, and is more close to the target object requirements of actual low-carbon optimization improvement, so that the practicality and consistency of the carbon emission boundary and a calculation result are guaranteed, and an effective basis and theoretical support are provided for energy conservation and emission reduction of products manufactured by machine tool equipment.

Aspects of the invention relate to improvements in the flexibility with which oxygen and hydrogen, for example from electrolysis, may be supplied to processes having both gasification and methanation steps, as well as improvements in how such processes may be operated in response to variations in carbonaceous feeds. Offsets, between the ideal quantity of hydrogen and the quantity available from a given source may be compensated for by adjusting one or more operations of the process, and in particular such operation(s) that ultimately impact the quantity of CO and/or CO₂ available downstream of the gasifier for conversion to methane in an RNG product stream.

The invention relates to the technical field of metal surface heat treatment, and discloses a vacuum carbonization heat treatment machining process. The internal of a furnace is vacuumized, and partsin the furnace are heated; the heating temperature is 930-950 DEG C; after the parts are heated to a set temperature, the temperature is homogenized by 30 min; carbonization gas is introduced in the furnace in a pulse form, and is maintained at a constant temperature of 930-950 DEG C; in a dispersion phase, the internal of the furnace is firstly vacuumized; then, nitrogen is injected in the furnace to reach the gas pressure in the furnace of not higher than 80 Pa for constant-temperature maintenance; and the internal of the furnace is vacuumized after maintenance. The low-pressure protective nitrogen is injected in the furnace in the carbonization dispersion phase, so that the pressure can be provided into the furnace to improve the dispersion efficiency, and high-concentration carbon content nearby the surfaces of parts is prevented; and under the condition of maintaining the carbonization temperature and the carbonization concentration in the furnace, the pressure in the furnace is increased, the carbonization efficiency is improved, the dispersion time is shortened, the production efficiency is improved, and the setting contradiction problems among the carbonization temperature,the carbonization concentration and the carbonization efficiency are effectively solved.

The invention relates to a W-shaped flame boiler air distribution way optimization method. The method comprises steps of analyzing an acquired boiler operation condition, determining an F wind downward inclination angle and D,E wind opening degree, in which for a back wall, the F wind downward inclination angle is 25,25,5,5,30,30,30,30,5,5,25,25, the E wind opening degree is 25,25,5,20,20,20,20,20,5,5,10,10, the D wind opening degree is 5,5,5,5,5,5,5,5,5,5,5,5 and for a front wall, the F wind downward inclination angle is 25,25,5,5,30,30,30,30,5,5,25,25, the E wind opening degree is 25,25,5,20,20,20,20,20,5,5,10,10 and the D wind opening degree is 5,5,5,5,5,5,5,5,5,5,5,5. An in-furnace combustion work condition can be improved; and CO can be reduced and flying ash carbon content can be also reduced at the same time.

The invention discloses a method and a device for treating carbon residues and recycling electrolyte. The method comprises the following steps: obtaining the electrolyte-containing carbon residues with the particle size of less than or equal to 12cm; mixing an additive containing carbonate with the carbon residues to obtain a first mixture; and heating the first mixture to the temperature larger than or equal to 560 DEG C and smaller than 650 DEG C through high-temperature flue gas exhausted by a fire hole of an electrolytic cell, the combustion reaction time is larger than or equal to 6 h, and therefore the carbon residues are treated, and the electrolyte is recycled. By adopting the method disclosed by the invention, the recovery rate of the electrolyte in the carbon residues is 98.07-98.68%, the recovery rate is high, the carbon content is 0.18-0.2%, the impurity content is low, and an electrolytic aluminum workshop does not discharge hazardous waste of the carbon residues; and the method fully utilizes the waste heat of the electrolytic cell and does not generate secondary pollution, so that the method is energy-saving, environment-friendly and pollution-free.

The invention discloses a thermal power plant boiler combustion efficiency intelligent analysis system and method. The thermal power plant boiler combustion efficiency intelligent analysis system andmethod adopt a mode of combining open-loop control and closed-loop control. The thermal power plant boiler combustion efficiency intelligent analysis system comprises a boiler real-time measurement and calculation module, a target control module, a strategy control module and a boundary judgment module. The thermal power plant boiler combustion efficiency intelligent analysis method is based on anO2/CO coupling relationship, boiler heat efficiency is taken as a main control target, and NOx and CO concentration is balanced; through a combustion optimization test, the relevance between the O2/CO concentration and the carbon content and NOx concentration of ash is determined, and powder making system operation parameters and boiler O2/CO optimal cooperative operation parameters under different loads are determined; and according to experimental research, an O2/CO optimal cooperative operation scheme is formulated, related control logic is modified on a DCS, a set of intelligent combustion efficiency analysis system with independent intellectual property rights is formed, the current optimal operation scheme is intelligently prompted, an operator is guided to carry out combustion adjustment and operate according to the scheme, and the boiler efficiency is improved by more than 1%.

The invention discloses a method for preparing a composite photocatalyst containing metal elementary substance particles from carbon-containing solid waste. The method specifically comprises the following steps: adding solid waste with a carbon content of 2-98% and a metal precursor solid raw material into an aqueous solution with a pH value of 1-6 according to the total solid-to-liquid ratio of 1:(10-30), and uniformly mixing; continuously stirring for 1-24 hours at a temperature of 20-90 DEG C, filtering, drying, and preparing into powder particles; and under the condition of introducing protective gas, carrying out a high-temperature reaction for 10-1440 minutes to obtain the composite photocatalyst containing the metal elementary substance particles. The method is simple in preparationprocess and easy to implement and operate, the specific properties of the carbon-containing solid waste are fully utilized, and the prepared composite photocatalyst has a remarkable effect when applied to organic wastewater treatment.

The invention provides a horizontal type circulating fluidized bed gasification method and device and relates to the technical field of solid carbon-containing fuel gasification. The method comprises the following steps: by adopting gasification in partitions, carrying out gasification reaction on solid carbon-containing fuel added into a first gasification chamber and a first gasifying agent in the first gasification chamber to generate raw coal gas, conveying the raw coal gas into a second gasification chamber, and separating unreacted carbon-containing solid substances and coal gas by virtue of an inertia separator; enabling the carbon-containing solid substances to fall into the second gasification chamber to be further gasified with a second gasifying agent in the second gasification chamber at gasification temperature higher than that of the first gasification chamber, so as to generate coal gas, then carrying out cyclone separation, then forming purified coal gas, outputting the purified coal gas, and returning a separated solid material to the first gasification chamber by virtue of a material returning device; and carrying out solid-state deslagging at the bottom of the first gasification chamber. The device mainly comprises the first gasification chamber, the second gasification chamber, the inertia separator, the cyclone separator, a vertical tube and the material returning device. The method and device which are provided by the invention have the advantages that the problems that carbon content of solid slag of an existing circulating fluidized bed gasification furnace is relatively high, fly ash content of coal gas is high and fly ash carbon content is high can be solved, carbon conversion rate and coal gas cooling efficiency are improved, and the carbon-containing fuel is utilized more effectively.

The invention belongs to a domestic garbage treatment gasification system, in particular to a garbage gasification system using air and steam as gasification agents. The invention adopts air and watervapor to mix, and the mixed gas with a temperature of 120-220 DEG C is used as a gasification agent to produce, while ensuring that the air content in the gasification agent is 0.2%-0.35% of the theoretically required air amount, the mass ratio of steam/solid fuel in gasification agent should be controlled at 0-0.35. According to the invention, by changing the gasification agent, the gasificationgas output and the gas calorific value are improved, the carbon content of ash slag is reduced, the sensible heat loss is reduced, and the gasification energy utilization rate can be increased by 10-30%.

The invention discloses a fly ash carbon content soft measurement method and a coal-fired boiler combustion optimization method and system. The fly ash carbon content soft measurement method comprises the following steps: 1, collecting historical operation parameters of a coal-fired boiler under multiple basic working conditions, and establishing an association relationship between the historical flue CO concentration and the historical fly ash carbon content under a plurality of basic working conditions; and 2, determining real-time working conditions and real-time operation parameters of the coal-fired boiler, and calculating the real-time fly ash carbon content under the corresponding real-time working conditions according to the real-time operation parameters and the association relationship established in the step 1. The boiler combustion optimization method is provided based on the fly ash carbon content of the coal-fired boiler, so that the total air volume of the boiler is adjusted according to the real-time fly ash carbon content of the coal-fired boiler, optimization of boiler combustion is finally achieved, and the combustion performance of the boiler is improved.

The invention discloses a system and method for upgrading and utilizing coal gasification fine slag based on particle size classification. The method includes the steps that the coal gasification fineslag is fed into a classifying cyclone, a high-frequency vibrating screen, and a high-frequency laminated vibration fine screen for classification, classified products are respectively fed to a filter press and a drum dryer for dry dehydration, and the dried products are respectively fed to a brick kiln/ceramic kiln, a coal machine/activated carbon production equipment and a fluidized bed boilerfor comprehensive utilization. Comprehensive utilization by classification and quality is carried out based on the general law that the carbon content of different granular products in the coal gasification fine slag continuously decreases with the decrease of the particle size and according to the granularity and carbon characteristics of different granular products, the process is simple, the quality improvement effect is good, the resource utilization level of the gasification fine slag can be effectively improved, and the pollution of the gasification fine slag to the environment is reduced.

The invention provides a system and method for detecting the carbon content of fly ash under the dynamic condition of a hollow metal waveguide. The system comprises a bypass measuring unit and a measuring device, wherein the bypass measuring unit and the measuring device can measure the fly ash from a flue in real time. The measurement method comprises the steps of introducing a standard ash sample of the same kind of coal into the hollow metal waveguide for measurement to obtain S21 amplitude or phase data of the standard ash sample, and fitting the data to obtain a fitting relational expression of the standard ash sample at different frequency points; starting an air compressor to introduce the fly ash in the flue into the hollow metal waveguide through an ejector and a cyclone separator, selecting any frequency point through a vector network analyzer to test the introduced fly ash to obtain S21 amplitude or phase data of the measured ash sample, and substituting the S21 amplitude orphase data into the relational expression to calculate the carbon content. Compared with the prior art, the method has higher resolution and test precision, test results of different carbon contentsare stably and obviously distinguished, the carbon content is increased every 2%, the corresponding S21 amplitude parameter is changed by 15-20 degrees, and the precision is better.

The invention discloses an internal circulating fluidized bed gasification furnace adapted to organic solid waste treatment which comprises a gasification furnace body, a furnace arch, a feeding hole,a blower nozzle and a slag discharging opening. A hearth is arranged in the gasification furnace body; the furnace arch is arranged on one side of the interior of the hearth; the feeding hole is formed in the other side of the interior of the hearth; the blower nozzle communicates with the hearth, and is arranged below the furnace arch; and the slag discharging opening is formed in the lower endof the hearth. Uniform air distribution can be realized in a high-flow-velocity fluidization area at the lower part of the hearth; through an internal circulation enhanced reaction zone in the middleof the hearth, the internal circulation of particles can be realized, the gasification reaction intensity is improved, the residence time is prolonged, and the conversion rate is improved; and in a dilute phase area at the upper part of the hearth, a proper height-diameter ratio is adopted, so that the reduction reaction time of gasified synthesis gas is prolonged, combustible gas with higher quality is obtained, the carbon content of fly ash is reduced, and the emission of dioxin and NOx is reduced.

The invention discloses an organic solid waste double-layer furnace body wet ash discharge fixed bed gasification furnace and a gasification method, the gasification furnace comprises a feeding device, a reaction zone furnace body comprising an upper section furnace body and a lower section furnace body, a furnace top gasification agent gas inlet, a middle section gasification agent gas inlet, a furnace bottom gasification agent gas inlet, a coal gas outlet and a deslagging device, an annular cavity is formed between the upper section furnace body and the lower section furnace body, the coal gas outlet is formed in the side wall, corresponding to the annular cavity, of the lower section furnace body and located between the furnace top gasifying agent inlet and the middle section gasifying agent inlet, and the slag discharging device is arranged in water and comprises an ash tray, a slag crushing ring, a fire grate supporting piece and a first ash knife. The gasification furnace can be applied to gasification treatment of various carbon-containing organic solids, solves the problems of high tar content and gas leakage at a feeding hole of a reverse-flow type gasification device capable of moving in opposite directions of coal gas and a material layer, and also solves the problem of high carbon content in solid-phase ash of a co-current gasification device with coal gas and material layer moving in the same direction.

The invention discloses a fire coal carbon emission data quality checking method and system for a thermal power enterprise. The method comprises the following steps: S1) collecting key index data of a thermal power generating unit; s2) constructing a quality checking index based on the key index data; s3) comprehensively analyzing and evaluating each quality checking index, and performing early warning output according to the comprehensive analysis and evaluation; s4) according to the quality inspection indexes in the S3), comprehensively analyzing the judgment result and the early warning output result, formulating an inspection scheme, and inspecting the fire coal carbon emission data of the thermal power enterprise according to the inspection scheme; the invention provides a method for analyzing and judging the reliability of monitoring data such as coal-fired carbon emission key index coal-fired coal unit calorific value carbon content and comprehensive sample representativeness, so that the internal data quality monitoring capability of an enterprise is improved; through the execution of the early warning scheme, the problem links of data abnormity can be effectively traced and verified, and timely correction and improvement can be carried out, thereby reducing the adverse risk caused by the inconformity of the data quality and the data verification of related departments.

Wire Mounting Solutions providing low embodied carbon insulation and façade mounting systems having unmatched thermal and acoustic performance, high structural strengths, and better able to withstand seismic and hurricane activity where other mounting systems may fail due to being too rigid.

The invention discloses preparation of an electrode material based on bird manure. The preparation method comprises the following steps: dissolving collected bird manure in water, and allowing the dissolved bird manure to naturally settle, wherein the mass of the water is 50-500% of the mass of the bird manure, and settling time is not less than 30 min; taking out bottom sediments, and drying thebottom sediments for later use; soaking the dried sediments in an alkaline solution, and then taking out the sediments for cleaning; soaking a cleaned substance in an acidic solution, and taking out the soaked substance for cleaning; soaking the cleaned substance in hydrogen peroxide with a mass concentration of 3%-30%, taking out the substance, and carrying out cleaning and drying; carbonizing/graphitizing the dried substance in an inert gas atmosphere; and grinding the carbonized/graphitized powder, and mixing the ground powder with a conductive agent and an adhesive to prepare an electrode.According to the method, the waste bird manure with high carbon content are fully utilized as a raw material, the obtained electrode material is stable in performance and low in cost, a new way is provided for treatment of bird manure, and a new raw material source is expanded for carbon electrode preparation.