43results about How to "High calorific value" patented technology

The present application belongs to the field of smelting coal gas recovery, and particularly relates to an optimized control method and system for combustible gas recovery. The method divides the smelting process into N measurement time periods, and calculates the average secondary combustion coefficient of each time period in real time. Meanwhile, M target smelting time zones and their weights are set, and a dynamic target value sequence is established. Based on the initial fan speed, the measured coefficient is adjusted through multiple iterations of the furnace, and when the measured coefficient is greater than the target value, the speed is reduced in steps, and a thermal imager and a differential pressure instrument are introduced to monitor the smoke emission. A smoke emission rate statistics and tolerance threshold judgment mechanism is established to trigger speed backtracking adjustment, and finally the average secondary combustion coefficient of each time period is minimized to generate an optimal fan speed model. The present application maximizes the improvement of the calorific value of coal gas and the recovery of carbon monoxide under the premise of preventing smoke from the furnace mouth.

The utility model provides an anaerobic fermentation gas collection and purification integrated device, including base, the right side fixed mounting of base top has small -size air compressor, the top of base and located small -size air compressor's left side is provided with purification mechanism, and the purification mechanism includes two jar bodies fixed installation in base top and the sealing cover screw connection in jar body top, the inboard of jar body of sealing cover bottom left side of base top and located is provided with first containing bucket. Through the setting of small -size air compressor is used for the gas after the purification of purification mechanism to compress collection, is convenient for subsequent centralized discharge to realize subsequent use, through the setting of purification mechanism is used for the methane and carbon dioxide of the inside generation of anaerobic fermentation equipment to collect, dries to it and eliminates the carbon dioxide containing in the inside simultaneously, eliminates the peculiar smell in the gas simultaneously, satisfies the use of subsequent time while increasing the methane purity and then increases the calorific value when subsequent combustion.

This invention provides a biomass fuel and its preparation method, belonging to the field of waste utilization technology. This invention mixes different waste materials to prepare biomass raw materials, and simultaneously utilizes microbial strains to transform the organic flame retardants contained in the waste raw materials into new flammable agents through biochemical reactions. The prepared biomass fuel has high calorific value, low smoke and dust, and excellent combustion performance, making rational use of various waste materials, and is environmentally friendly, efficient, and energy-saving. The results of the embodiments show that the biomass fuel prepared by this invention has a calorific value of 35.6 MJ / kg, a calorific value of 4100 cal / g, a combustion efficiency of 99.1%, and low smoke and dust.

This utility model discloses a mobile emergency drainage device for garbage pits, including a mobile platform, a garbage pit, and a receiving trolley. The receiving trolley is slidably mounted on the upper surface of the mobile platform. A support rod is fixedly connected to the top of the receiving trolley, and a support plate is fixedly connected to the top of the support rod. An electric hoist that moves horizontally is mounted on the lower surface of the support plate. This utility model relates to the field of garbage pit drainage technology. This mobile emergency drainage device for garbage pits, after the pumping mechanism operates, can extract leachate from the bottom of the garbage pit cavity into a sewage discharge pipe on the mobile platform. The water injection mechanism can wash the surface of the filter screen, improving the stability of the leachate extraction process, preventing the filter screen from becoming clogged due to excessive garbage in the garbage pit, thus ensuring timely drainage of leachate, increasing the calorific value of the garbage, and guaranteeing normal and efficient garbage incineration.

The utility model provides a hydrogen-doped pulverized coal mixed combustion device and a hydrogen-doped pulverized coal mixed combustion system. The hydrogen-doped pulverized coal mixed combustion device comprises a hydrogen distribution device, a pulverized coal conveying device, a fuel mixing device and a combustion device, the hydrogen distribution device and the pulverized coal conveying device are arranged in parallel, and an inlet of the hydrogen distribution device and an inlet of the pulverized coal conveying device are communicated with a hydrogen storage tank and a pulverized coal storage bin through pipelines respectively. Outlets of the hydrogen distribution device and the pulverized coal conveying device communicate with the fuel mixing device through pipelines so that hydrogen and pulverized coal can be mixed to form a gas-solid mixture, and the combustion device combusts the gas-solid mixture. According to the hydrogen-doped pulverized coal mixed combustion device, hydrogen and traditional energy are combined and utilized in the industry, and in the combustion process of the hydrogen-doped pulverized coal, emission of pollutants can be reduced, and sustainable low-carbon development of economy is promoted.

The present invention provides a solid fuel production system having a sewage sludge solid fuel deodorizing heat treatment device, including a mixer mixing sludge or an additive to produce a first mixture; a first dryer performing first drying in such a manner that the first mixture supplied from the mixer reaches a first moisture content; a second dryer producing a dried mixture of a second moisture content by heating and drying the first mixture of the first moisture content; a former molding the dried mixture by pressure molding; and a heat treatment device performing heat treatment on the solid fuel put into the inside after molding is completed to remove odor generated from the solid fuel molded in the former.

The application discloses a kind of high clean modified methanol fuel, including following weight parts of substance: methanol 80-90 parts, polycarbon alcohol 10-15 parts, methylal 0.5-1 part, ferrocene 0.1-0.3 part, ethanolamine 0.01-0.03 part, modified catalyst 6-10 parts, additive 3-5 parts;The application is modified to methanol by methanol-acetone molecular sieve modified catalyst, the phenol content of methanol fuel is made, the fuel of methanol fuel is safer, the stability of methanol fuel is improved, the methanol heat value is improved, and the methanol fuel prepared simultaneously is high in safety, clean and environmentally friendly, and small in pollution.

The invention provides a gas turbine methanol compound cycle power generation system based on an expansion machine and methanol reforming reaction waste heat recovery. A methanol solution storage tank, a pump, a liquid methanol solution gasifier, a gaseous methanol-steam reforming reactor, the expansion machine and a gas turbine are integrated and circulated; exhaust smoke of a gas turbine sequentially passes through the gaseous methanol-steam reforming reactor unit and the liquid methanol solution gasifier unit for heat exchange and cooling and then enters an exhaust system; a liquid methanol solution is discharged from the liquid methanol solution storage tank, sequentially passes through the pressure pump, the liquid methanol solution gasifier unit and the gaseous methanol-steam reforming reactor unit, and then is converted into mixed gas of methanol, hydrogen, carbon dioxide and water; and after pressure reduction and temperature reduction, the gas enters a combustion chamber of the gas turbine to be mixed with air for combustion. The system has the advantages that the methanol reforming reaction hydrogen production technology, the expansion machine technology and the gas turbine cycle are integrated, and efficient power generation is achieved.

The present application relates to a kind of underground gasification system of gas-containing coal seam and its gasification method, including multiple groups of vertical and interval arrangement U-shaped pipeline, the U-shaped opening of U-shaped pipeline is all upwards, and the bottom of U-shaped pipeline is gasification passage, and multiple through holes are formed screen pipe in gasification passage;First switch valve is arranged and installed in the opening of both ends of U-shaped pipeline, and the same end portion between adjacent two groups of U-shaped pipeline is also all connected by the connecting pipe with second switch valve, the communication position of connecting pipe and U-shaped pipeline is all below first switch valve, and detection tube is communicated on each connecting pipe, both ends of detection tube are communicated with connecting pipe, and the communication position of both ends of detection tube and connecting pipe is on the side of second switch valve, gas composition detection device, gas temperature detection device, exhaust pipe and third switch valve are also sequentially installed on detection tube, fourth switch valve is installed on exhaust pipe, and the present application can realize the efficient underground gasification operation of gas-containing coal seam.

This invention discloses a carbon-based fuel gasification method based on the principle of a galvanic cell, comprising the following steps: (1) forming a three-layer self-layered structure of a metal layer, a metal oxide layer, and a molten carbonate layer from bottom to top in a reactor; (2) adding carbon-based fuel to the molten carbonate layer; (3) gasification step: forming a galvanic cell with carbon-based fuel as the negative electrode, metal oxide as the positive electrode, and molten carbonate as the electrolyte, wherein the oxygen in the metal oxide is converted into oxygen. 2‑ The form diffuses through the molten carbonate layer to the carbon-based fuel interface, selectively oxidizing the carbon-based fuel to generate CO. The metal oxide is reduced to metal and sinks to the metal layer; (4) Regeneration step: a gaseous oxidant is introduced into the metal layer to oxidize the metal to metal oxide, replenishing the oxygen storage capacity of the metal oxide layer, and completing the storage of oxygen and the circulation of the reaction medium. This invention utilizes the potential of the galvanic cell to spontaneously drive the reaction and manages the gasification process by controlling the "charging / discharging" cycle. It has the advantages of high CO selectivity, good metal oxide volatilization inhibition effect, high fuel impurity tolerance, high gas production calorific value, and spontaneous and efficient reaction, which is suitable for the needs of clean and efficient conversion of distributed carbon-based fuels.

A sealing device for a converter oxygen lance insertion hole belongs to the technical field of converter top-blowing equipment and is used for preventing smoke from escaping from the converter smelting top-blowing oxygen lance insertion hole. According to the technical scheme, an insertion hole connecting flange is welded to the periphery of the upper end of an oxygen lance insertion hole, a sealing seat is a circular ring, the circular ring periphery of the sealing seat is connected with the insertion hole connecting flange through bolts, a circular ring inner hole of the sealing seat is conical, and the conical lower end of the circular ring inner hole of the sealing seat is matched with the diameter of the upper end of the oxygen lance insertion hole. The oxygen lance body is sleeved with the sealing plug, the periphery of a circular ring of the sealing plug is conical, the periphery of the sealing plug is connected with an inner hole of the sealing seat in a matched mode, the guide cylinder is a cylinder, the lower end of the guide cylinder is welded to the upper end face of the sealing plug, and the guide cylinder is sleeved with the gas collecting cover which is a cylinder. The lower end of the gas collecting cover is welded to the outer edge of the upper end of the sealing seat. A nitrogen sealing structure is omitted, the oxygen lance insertion hole can be sealed, and smokeless operation is achieved.

The utility model belongs to Hismelt ironmaking technical field, concretely relates to a kind of Hismelt ironmaking coal gas pipeline. Coal gas pipeline includes the lead-out pipe connected with reduction furnace, riser, downcomer and diffusion valve, the downcomer is connected with gravity dust collector;At least one branch of coal powder spray gun is equipped on the coal gas pipeline, the coal powder spray gun is inserted into pipeline by passing through coal gas pipeline wall, and is connected with coal gas pipeline by flange;The cooling water pipe is arranged in the form of membrane wall in the inner wall of the coal gas pipeline;The diffusion valve is arranged at the connecting place of riser and downcomer, for balancing the pressure in coal gas pipeline, prevent pressure from suddenly rising.The realized effect is: CO2 content in coal gas reduces 3.7%, CO content increases 5.1%, and the calorific value of coal gas increases 26%;Increase the outlet angle of coal gas pipeline lead-out pipe, it is favorable for slag iron in coal gas pipeline to flow back into SRV, solve the problem of lead-out pipe accumulated slag iron.

The application provides a method for synchronously preparing a metallurgical dephosphorizing agent by gasifying flue gas of a calcium-based reinforced metallurgical furnace and desulfurizing flue gas, and belongs to the technical field of metallurgical energy-saving and environmental protection. The method uniformly loads calcium-based materials on coal gasification raw materials through pretreatment loading, sprays the calcium-based materials into a metallurgical furnace gasification flue through a spraying system on the metallurgical furnace gasification flue, realizes coal gasification under the action of high-temperature flue gas, and the loaded calcium-based materials play a role in strengthening organic fuel cracking gasification in the process. Meanwhile, sulfur-containing flue gas released by the organic fuel is solidified by the calcium-based materials, the solidification products enter a dust removal system with dust, the calcium-based materials react with iron-containing components in the dust in the metallurgical furnace gasification flue to generate calcium ferrite with dephosphorizing metallurgical performance, and the calcium ferrite enters the dust removal system with the dust. The collected dust removal ash is used for high-value dephosphorizing agent production after being separated and purified through magnetic separation, and provides an effective way for the sustainability and economical production of the metallurgical industry.

Provided is a joint of a copper terminal and an aluminium conductor. A copper terminal connecting member of the joint is connected to a conductive core of the aluminium conductor by means of a transition welding layer, and the joint can also be provided with a reinforcing welding layer. Further provided is a method for preparing the joint using plasma arc welding. According to the invention, the connection portion of the copper terminal with the aluminium conductor is filled with solder in a plasma arc welding manner, such that copper and aluminium are connected by means of the solder. Damage to an aluminium oxide layer during welding increases the conductivity and can also isolate the copper terminal and the aluminium conductor, thus preventing an electrochemical reaction between the copper and the aluminium, prolonging the service life of the joint of the copper terminal and the aluminium conductor, and ensuring the mechanical and electrical performances of the connection structure.

This invention relates to the field of biomass treatment technology, and more particularly to a tar self-recirculation biomass gasification device and method. The invention includes a gasifier, a spray-washing radiator, a wood vinegar condenser, and a jet mixer. The gasifier includes a waste heat evaporator and a biomass gasifier, the latter being internally divided into a dry distillation section, a redox section, and a combustion chamber. The spray-washing radiator includes a crude wood vinegar collection tank, an air-cooled radiator, and a demister. The dry distillation section and the redox section are respectively connected to the crude wood vinegar collection tank, the lower end of which is connected to the waste heat evaporator. The wood vinegar vapor outlet and tar outlet on the waste heat evaporator are respectively connected to the jet mixer via pipelines. The wood vinegar vapor outlet is also connected to the condenser via a pipeline, and the jet mixer outlet is connected to the combustion chamber. This biomass gasification device achieves in-situ high-temperature tar disposal and efficient waste heat utilization through tar separation and recirculation, realizing stable system operation and high-value utilization of by-products.

This invention discloses a cerium sulfosalicylate sulfonate for use as a coal combustion catalyst, its preparation method, the catalyst itself, and its applications. The preparation method includes: S10, mixing cerium nitrate and sulfosalicylic acid dihydrate with water to obtain a cerium sulfosalicylate complex solution; S20, adding the cerium sulfosalicylate complex solution to a first reverse micelle solution to obtain a first mixed solution, then adding n-butanol in batches to obtain a first microemulsion; S30, adding ammonia to a second reverse micelle solution, then adding n-butanol in batches to obtain a second microemulsion; S40, mixing the first and second microemulsions and stirring to obtain a pale blue, opalescent colloidal solution, thus obtaining a second mixed solution; S50, drying and grinding the second mixed solution to obtain cerium sulfosalicylate. This cerium sulfosalicylate coal combustion catalyst is easily dispersed and can catalyze the pyrolysis and oxidation processes of coal from within, improving the utilization rate and calorific value of coal.

The present application belongs to the field of coupling power generation, and provides a system and a control method for coupling a pulverized coal boiler low-load stable combustion and blending combustion. The system comprises two paths of cold air from a boiler primary air fan, one of which is directly transmitted to a cold air main pipe, and the other is transmitted to a hot air main pipe after being preheated by a preheater; a coal mill respectively takes cold air and hot air from the cold air main pipe and the hot air main pipe, mixes them to a set temperature, and then enters the coal mill for drying of the pulverized coal and sending the dried pulverized coal to the furnace of the pulverized coal boiler for combustion; a biomass gasifier respectively takes cold air and hot air from the cold air main pipe and the hot air main pipe, mixes them to a set temperature, and then enters the biomass gasifier; biomass material is gasified in the biomass gasifier to generate carbonized products of biomass charcoal and biogas; the carbonized product of biomass charcoal is transported to the coal mill to be ground together with raw coal, and then is blown to the pulverized coal boiler for combustion in the furnace; and the biogas is directly introduced into the pulverized coal boiler for combustion in the furnace.

This application discloses a side-blowing device and method for converter smelting. The side-blowing device includes a powder spray gun, a position adjustment mechanism, a powder supply unit, a vision sensing unit, and a control unit. The powder spray gun is used to spray metallurgical powder into the converter molten pool. The position adjustment mechanism is connected to the spray gun drive to regulate its spatial position. The powder supply unit is connected to the spray gun and is responsible for powder storage and transportation. The vision sensing unit is used to collect image information of the tapping area. The control unit is communicatively connected to the other three components, receives image information, identifies the spatial coordinates of the tapping area, generates positioning commands to drive the position adjustment mechanism to adjust the spray gun to the preset spraying position, and simultaneously regulates the mass flow rate of powder and carrier gas. Through the coordinated operation of multiple units, the device achieves accurate identification of the tapping area and automatic positioning of the spray gun, simplifying the equipment structure, improving the utilization rate of metallurgical powder, and possessing comprehensive advantages such as equipment durability, operational safety, resource recycling, and low-carbon environmental protection.

This invention discloses a carbon aerogel nanosuspension with emulsifying function, its preparation method, and its application. The preparation method of the carbon aerogel nanosuspension includes: adding an alkaline solution to an aqueous solution of a phenolic organic compound and stirring and mixing, then adding an aldehyde solution to carry out an addition reaction to obtain a benzene-based multi-component mixture; then stirring and mixing with an acid solution to carry out a condensation reaction, and then aging the resulting reaction product to obtain a wet gel; the wet gel is freeze-dried and carbonized to obtain a block carbon aerogel; finally, the block carbon aerogel is pulverized into nanoparticles and ultrasonically dispersed in water to obtain the carbon aerogel nanosuspension. The carbon aerogel nanosuspension prepared by this invention has good emulsifying function, can effectively reduce the viscosity of waste tire pyrolysis oil, and capture fly ash in waste tire pyrolysis oil.

The invention relates to the field of green special refractory ceramics, and particularly discloses an ultralow-carbon aluminum zirconium barium magnesium converter sliding plate and a preparation process thereof. The ultralow-carbon aluminum-zirconium-barium-magnesium converter sliding plate comprises the following raw material components in parts by weight: 60-80 parts of a main material; 1-3 parts of nano magnesium oxide; 4-8 parts of magnesium oxide; 20 to 30 parts of zirconium oxide; 1-4 parts of a sintering agent; 3-6 parts of a binding agent; the main materials comprise barium hexaaluminate and barium zirconate; the preparation method comprises the following steps: S1, mixing to obtain a mixture; and S2, the mixture is subjected to firing, oil immersion, baking and cold machining in the oxygen atmosphere, and the ultra-low-carbon aluminum zirconium barium magnesium converter sliding plate is obtained. The ultralow-carbon aluminum-zirconium-barium-magnesium converter sliding plate almost does not contain any carbon element, the oxidation resistance is excellent, the cleanliness of molten steel is effectively improved, and the thermal shock resistance and the crack propagation resistance of the ultralow-carbon aluminum-zirconium-barium-magnesium converter sliding plate are obviously improved through the synergistic effect of all the components.

The invention provides a biomass blending control method and system, and relates to the technical field of resource recycling, and the system comprises a dehydration unit, a crushing unit, a mixing unit, a granulation unit and a conveying unit which are electrically connected with a control unit; the dehydration unit, the crushing unit, the mixing unit and the granulation unit are sequentially connected through the conveying unit; the dewatering unit is used for dewatering the raw sludge to obtain dewatered sludge; the crushing unit is used for crushing and crushing the dewatered sludge and the biomass to obtain sludge powder and biomass powder; the mixing unit is used for mixing according to a mixing ratio to obtain mixed powder; the granulation unit extrudes the mixed powder into fuel particles; the conveying unit conveys materials. Dewatering reduces the moisture content of raw sludge and increases the heat value of the sludge; the biomass has a calorific value higher than that of the sludge, and the dewatered sludge and the biomass are sequentially crushed, crushed and mixed, so that the calorific value of the fuel is increased, the calorific value of the mixed fuel meets the requirement of self-sustaining combustion, and the problem that the sludge cannot be self-sustaining combustion due to low calorific value is solved.

This invention discloses a method, medium, and system for controlling soot yield in biomass pyrolysis gasification processes. The method includes the following steps: using a linear genetic programming (CGI) control algorithm to obtain several flow rate control rates; starting the gasifier by changing the flow rate of the gasifying agent according to the flow rate control rates generated by the CGI algorithm, performing a complete pyrolysis gasification cycle, and measuring and recording the soot generation after the products are stably discharged; converting the soot generation into a cost function J value, and inputting the cost function of the best individual in this generation into the CGI algorithm to generate the next generation; repeating the pyrolysis gasification and calculation / conversion steps until the decrease in the cost function J value between adjacent generations is less than 2%, at which point the cycle stops; in the last generation, the individual with the smallest cost function J value is considered to have the optimal flow rate control rate. This method can achieve lower and more controllable soot yield, higher calorific value of syngas, and long-term reactor stability and more efficient operation.

The present application relates to sludge and solid waste treatment technical field, especially to a kind of sludge and urban source perishable organic solid waste controllable non-steady state steam thermal shock method.The method provided by the present application mixes and conditions sludge and urban source perishable organic solid waste, makes up the defect of single sludge organic matter low, significantly improves the overall organic matter content and calorific value of material;Non-steady state steam of high temperature and high pressure can be injected at high speed and released instantaneously by distributed gas guide device to form impact-shear coupling effect, realize the physical wall breaking of sludge bacteria-jelly-ball extracellular polymeric substance, and retain organic matter in solid product to the greatest extent;After forming controllable non-steady state steam shock environment in the reaction system, material can be rapidly heated, steam permeation and pressurized expansion, and combined with rapid pressure relief to realize steam transient expansion wall breaking.

This invention discloses a method for co-flotation recovery of clean coal from coal gasification fine slag and waste plastics, comprising the following steps: 1) mixing waste plastic particles, coal gasification fine slag, and water, adding a modifying agent, and grinding to obtain a grinding product; 2) filtering the grinding product, and then stacking the filter cake for settling to obtain a settling product; 3) flotating the settling product to separate low-ash clean coal and high-ash tailings. This invention, through precise control of grinding mixing and settling modification, combined with the modifying and strengthening effect of maleic anhydride-grafted polyethylene wax, significantly improves the hydrophobicity of the residual carbon surface, resulting in clean coal with lower ash content and higher calorific value. It can be directly used for coal blending, coal briquette preparation, or as a raw material for coal chemical industry, greatly increasing added value. The tailings, after treatment, can be used as building materials without secondary pollution, forming a closed-loop system of "solid waste treatment - resource output - end-use application," suitable for large-scale industrial promotion.

This invention provides a method for recovering valuable elements from NdFeB waste through co-reduction smelting of electronic waste. The method involves mixing powdered NdFeB waste and fine-grained electronic waste with a slagging agent and a solid reducing agent, and then using a top-blown smelting furnace to reduce and smelt the mixture. By controlling the conditions of the reduction process, the oxides of copper and iron in the mixture are reduced to metallic copper and metallic iron. These two metals then aggregate with rare and precious metals such as gold and silver from the electronic waste to form a copper-iron precious metal alloy. Rare earth oxides are not reduced and remain in the slag layer. The copper-iron precious metal alloy particles are denser than the rare earth slag and sink rapidly to the bottom of the furnace. After settling and stratification, the copper-iron precious metal alloy melt and the rare earth slag are discharged separately from the metal outlet and slag outlet, respectively. This method achieves the simultaneous recovery of rare earth elements from NdFeB waste and copper, gold, and silver from electronic waste. The process is short, energy-efficient, and offers significant economic and environmental benefits.

This invention discloses a diesel liquid nano-additive and its preparation method, comprising the following components by mass percentage: 0.02-0.5% rare earth-based nano-catalyst, 52-67% cetane number improver, 1-5% smoke suppressant, 3-19% detergent-dispersant, 3-8% pour point depressant, 7-20% antioxidant, and 5-13% lubricant. This invention enables catalytic combustion of diesel fuel, simultaneously promoting the combustion of CO, HC, and soot, reducing particulate matter formation during the main combustion period, lowering exhaust pollutant emissions, ultimately achieving energy savings, enhanced power, ultra-low exhaust emissions, and significantly improving the calorific value of diesel fuel, achieving an energy-saving efficiency of over 37%, demonstrating significant energy-saving effects.

The utility model provides a kind of mine dump truck hydraulic oil tank filter device, including at least one filter assembly being arranged in hydraulic oil tank, the filter assembly includes the filter cartridge of upper end with the upper end inside hydraulic oil tank fixed connection, the filter cartridge lower end is provided with the oil outlet pipe being communicated with hydraulic oil tank, the filter cartridge is provided with hollow filter core, the filter core is sleeved on the oil outlet pipe upper side;It further includes main inlet pipe, one end of the main inlet pipe is fixedly connected with steel pipe flange, for inputting backflow hydraulic oil, other end is communicated with filter cartridge by branch inlet pipe.The filter assembly is built-in in hydraulic oil tank, compared with external filter device, realize larger flow filtering function, install filter assembly by upper end and fixed connection with hydraulic oil tank, side is fixed by main inlet pipe and hydraulic oil tank side plate, provide lateral support to filter assembly, more stable in use process, not affected by vibration generated by vehicle operation, and more reasonable in layout.

The present application relates to the technical field of biofuel preparation, and discloses a high-calorific-value stable-combustion bio-blended fuel and a preparation method thereof, which comprises polar ester components, straight-chain alkane components, branched-chain alkane components and halogenated alkane components in a proportion by weight. The preparation method adopts a step-by-step temperature control feeding combined with a stage speed regulation shearing process, heats and melts high-carbon straight-chain alkane to form a liquid-phase matrix, adds isomeric alkane at a high temperature and improves the double-layer stirring speed for mechanical shearing and dispersion, slowly drops the halogenated alkane components and mixes the polar ester components after constant temperature and cooling. Through the synergistic cooperation of multiple categories of hydrocarbons and oxygen-containing compounds, the branched-chain structure steric hindrance is used to interfere with the formation of macromolecular wax crystal network, and the halogenated component is dissociated to control the chain reaction rate. The present application takes into account the high-calorific-value output and stable combustion, suppresses the cylinder knock, improves the low-temperature flow performance of the fuel, and generates a homogeneous transparent liquid.

The application discloses a method for preparing formed fuel by mixing semi-dried sludge and oil-tea camellia fruit hulls, and the method comprises the following steps: (1) washing and drying the oil-tea camellia fruit hulls, then crushing and sieving the oil-tea camellia fruit hulls to obtain oil-tea camellia fruit hull powder; drying high-moisture sludge to obtain semi-dried sludge; (2) baking the oil-tea camellia fruit hull powder under a mixed atmosphere of oxygen and nitrogen to obtain baked oil-tea camellia fruit hulls, or pyrolyzing the oil-tea camellia fruit hull powder under a nitrogen atmosphere to obtain oil-tea camellia fruit hull biochar; (3) mixing and stirring the semi-dried sludge and the baked oil-tea camellia fruit hulls or the oil-tea camellia fruit hull biochar, uniformly placing water, and then preparing formed fuel. The method is simple, easy to operate and low in cost, the prepared formed fuel particles can realize rapid reduction of urban sludge and recycling of energy, and the method has the advantages of low energy consumption, high particle strength, no pollution and the like when the formed particles are prepared.