47results about How to "Raise the ash melting point" patented technology

The invention discloses an industrial residue boiler anti-coking agent and an application method thereof, belonging to the technical field of anti-coking additives. The industrial residue boiler anti-coking agent comprises the following components in percentage by mass: 30-60% of kaolin, 30-60% of CaO and 10-20% of fly ash. When in use, the industrial residue boiler anti-coking agent, accounting for 1-2% of the total mass of the industrial residue fuel, is added to the industrial residue fuel and evenly mixed. The industrial residue boiler anti-coking agent disclosed by the invention has high porosity, and the surface micropores have adsorbability; the industrial residue boiler anti-coking agent is simple to use, and the addition amount is only 1-2% of the total weight of the fuel, so that the invention does not influence the combustion characteristics of the fuel and the normal operation of the boiler, and does not need to modify the existing combustion equipment, thereby greatly lowering the investment cost.

The invention discloses a systematic device and a method for biomass microwave pyrolysis poly-generation by adopting combined washing and baking pretreatment. The systematic device comprises a biomass washing-baking-pyrolysis system and a washing liquor circulatory system. According to the method, firstly, biomass raw materials are washed to remove part of alkali metal and impurities and then pre-dried, then large quantities of hemicellulose components are decomposed through baking pretreatment, the physical microstructure of biomass is improved, and the quality of a biomass microwave pyrolysis product after pretreatment is improved; the obtained biomass has high char calorific value and ash fusion point, low bio-oil water content and acidity, stable chemical composition, high syngas calorific value and great follow-up utilization potential. Energy of volatile matters is recovered and taken as a pre-drying heat source; meanwhile, the washing liquor circulatory system recovers sensible heat of pyrolysis char and moisture and latent heat in exhaust gas of flue gas after drying, the energy efficiency of the system is high, exhaust gas is not discharged in an operation process, operating parameters can be adjusted according to the biomass raw materials, the system operation safety is high, and the cost is low.

The invention discloses a method for improving biomass fuel ash fusion point, which is characterized in that the aim of improving the ash fusion point of biomass fuel is realized by mixing the compounding additives with the biomass fuel. By taking the mass of ash in the biomass fuel as 100 parts, the compounding additives contain the following components in parts by weight: 5-20 parts of kaolin, 0-15 parts of acid clay, 0-15 parts of diatomite, 0-10 parts of bentonite, 0-20 parts of coal, and 0-25 parts of coal gangue. The biomass fuel and the compounding additives are crashed, and are mixed uniformly by adopting a direct mixing method, The ash fusing point Ts (softening temperature) of the biomass fuel can be improved greatly, the range improved can reach 200-300 DEG C. The method has the characteristics of simple operation and low cost, and can be widely used for improving the ash fusing point of various biomass fuels.

The invention discloses an additive inhibiting biomass boiler coking. The additive is prepared from, by mass, 35-65% of kaolin, 30-60% of CaO and 5-35% of Mg(OH)2. When the additive is used, the addition proportion accounts for 0.5-2% of the total mass of biomass fuel. The additive can be directly mixed with biomass uniformly, then enters a combustion furnace by means of a feeding system of the boiler, and can be sprayed into a hearth uniformly along with an air inlet system, use is easy, and operation is easy. The additive has large porosity, the reaction area of the additive and the biomass fuel can be increased, pores in the surface of the additive have adsorption performance, alkali metal such as K and Na can be adsorbed to the surface of the additive effectively, the chemical reaction is carried out so that a high-melting-point substance can be generated, and ash deposition and slag bonding of the heated face are reduced; the amount of the adopted additive is small, efficiency is high, the coking resistant effect is remarkable, and the ash fusion point of the biomass can be remarkably increased.

The invention discloses an environmentally-friendly biomass granule fuel. The environmentally-friendly biomass granule fuel comprises sawdust, crop straw, anthracite smalls, sludge garbage, tea leaf residues, rice hull powder, attapulgite clay, montmorillonite and red mud. According to the environmentally-friendly biomass granule fuel, treatment of the sludge garbage is more environmentally friendly and economical, and the cost of the environmentally-friendly biomass granule fuel is low; compared with biomass granule fuels of the same type which are not compatible with the sludge garbage, theenvironmentally-friendly biomass granule fuel has higher heat value; moreover, the environmentally-friendly biomass granule fuel overcomes the phenomenon of slag-bonding, and discharging of harmful air is greatly reduced.

The invention discloses a blast furnace injection semi-coke additive as well as a preparation method and a use method thereof, and belongs to the technical field of blast furnace coal injection. The additive comprises the following components in percentage by mass: 0.1-0.25% of a grinding aid, 58-80% of a composite waste residue type catalyst, 18-40% of a composite compound type catalyst and 1-4%of a dispersing agent. By adding the additive, the grindability and the ash melting point of semi-coke can be improved, the combustion effect is good, the injection amount of the semi-coke in a blastfurnace is greatly increased, the additive is suitable for large-scale popularization and application of blast furnace injection semi-coke, and a good foundation is laid for finally achieving completereplacement of coal with the semi-coke and achieving coal removal in a blast furnace injection system.

The invention relates to a gas-liquid-solid waste comprehensive treatment and resource utilization system, which comprises a grinding device, a pulping device and a gasification device. The grinding device comprises a feeding device and a mill. The feeding device is fed with carbon-containing raw material solid waste, waste water liquid and additives, and a formed mixture is sent to the mill for grinding to form a slurry A, and the slurry A is sent to the pulping device; the pulping device comprises a pulping body, a mixing pulping intelligent guidance system and a modifying conditioning device, wherein the mixing pulping intelligent guidance system guides the modifying conditioning device to perform conditioning treatment and ultrasonic treatment on the slurry A passing into the pulping body to generate a slurry B. The gasification device comprises a gasification furnace, wherein the gasification furnace is fed with the slurry B, which is prepared from the carbon-containing raw material solid waste and the waste water liquid by the front grinding device and pulping device, for pyrolysis and gasification to generate usable gas. The system provided by the invention is a system for comprehensive treatment of solid waste, waste liquid and waste gas.

The invention discloses a coal gasification method and relates to the technical field of coal gasification. The coal gasification method can avoid scorification in a gasification method to ensure continuous and stable operation in the gasification process and expand the coal type application range of the gasification process. The coal gasification method disclosed by the invention comprises the following steps: supplying coal, a gasifying agent and slag containing silicoaluminate to gasifying equipment; and carrying out a gasification reaction on coal and the gasifying agent in the gasifying equipment. The coal gasification method disclosed by the invention is suitable for the coal gasification process.

The invention belongs to the technical field of comprehensive utilization of biomass and livestock and poultry manure, and particularly relates to a poly-generation method employing coupling of biomass with livestock and poultry manure. The poly-generation method comprises the following steps: burning straws to generate power so as to provide heat, pretreating the straws and the livestock and poultry manure, respectively hydrolyzing and acidifying the straws and livestock and poultry manure, feeding the straws and livestock and poultry manure having been hydrolyzed and acidified into a CSTR anaerobic fermentation tank, allowing the hydrolyzed and acidified straw and livestock and poultry manure to undergo medium-temperature anaerobic fermentation in the CSTR anaerobic fermentation tank so as to obtain biogas and biogas slurry, subjecting the biogas slurry to solid-liquid separation before preparation of an organic fertilizer from the biogas slurry, and subjecting the biogas to drying, gas-water separation, desulfurization and filtration before preparation of natural gas from the biogas. According to the invention, the straw and the livestock and poultry manure are coupled and recycled to generate electricity, heat, cold, biogas and organic fertilizer, so harmless utilization of resources is realized.

The invention discloses biomass granular fuel, which is prepared from the following components: sawdust, crop straw, a corncob, rice hull powder, attapulgite clay, montmorillonite and red mud. The biomass granular fuel provided by the invention is reasonable in componential compatibility; the slagging phenomenon of a present biomass granular fuel is greatly ameliorated; the emission of pollution gas is greatly reduced and the combustion rate of the biomass granular fuel is improved.

The invention provides a chemical method. The chemical method can reduce adverse effects of active sodium-containing components in high-sodium coal on a boiler and other devices in a high-temperature environment, and comprises the following steps: step 1, pretreatment, namely uniformly spraying a certain amount of a silica sol solution containing silica onto the high-sodium coal or soaking the high-sodium coal in the silica sol solution for a period of time to obtain high-sodium coal completely subjected to pretreatment; step 2, drying, namely drying the high-sodium coal completely subjected to pretreatment to obtain dried high-sodium coal; step 3, conveying the dried high-sodium coal to the high-temperature environment for use, wherein in the process, the silica and active sodium-containing components react to generate a sodium-containing substance which is high in melting point and insusceptible to volatilization.

The invention relates to the field of catalytic coal gasification, in particular to a pretreatment method of high-alkali coal. The method can make the alkali metal in high-alkali coal exist in the form of an alkali metal salt with catalytic activity so as to improve the catalytic activity of catalytic high-alkali coal gasification, and also can reduce slagging. The pretreatment method of high-alkali coal provided by an embodiment of the invention includes: stirring high-alkali coal in the presence of calcium ions existing in the form of calcium-oxygen bond and water, carrying out ion exchange reaction on the oxygen-containing functional group on the surface of the high-alkali coal and the calcium ions existing in the form of calcium-oxygen bond, then carrying out ion exchange reaction on calcium ions exchanged to the surface of the high-alkali coal and alkali metal ions in the high-alkali coal, and performing drying to obtain the treated high-alkali coal with the surface rich in K-O-C active intermediate. The embodiment of the invention can be applied to pretreatment of high-alkali coal.

The invention discloses a high-combustion-value fuel rod and a manufacturing process thereof. A formula of the high-combustion-value fuel rod adopts the following weight percentage: 20 to 40% of paulownia saw dust, 10 to 30% of paulownia bark, 5 to 12% of waster carbon powder, 2 to 6% of acidic pulp mill waste liquor, 15 to 40% of food sludge, 3 to 10% of waste paper pulp, 2 to 6% of glass cement and 4 to 12% of calcium oxide. Compared with the prior art, the high-combustion-value fuel rod and the manufacturing process thereof, which are disclosed by the invention, have the following advantages that: in the invention, by performing a reaction on the paulownia bark and the acidic pulp mill waste liquor under a certain conditions, the material structure in the paulownia bark is improved, combustible components in the high-combustion-value fuel rod are kept, and active components in the high-combustion-value fuel rodare increased, so that the fuel rod can be sufficiently burnt; macromolecular substances in the high-combustion-value fuel rod are degraded into low molecular weight organic matter, so that not only is a raw material easy to form, but also an adhesion degree of the fuel rod can be reinforced, and residues and offcut in the machining process are reduced; combustion heat of the fuel rod reaches about 4,600 Kcal/kg; the fuel rod can be used for equipment or processes with high requirements for heat.

The invention belongs to the technical field of comprehensive utilization of biomass organic fertilizers, and particularly relates to a biomass organic fertilizer which is prepared by processing a solution A obtained by taking an animal manure protogenetic solution such as human or livestock, a plant raw material B obtained by collecting stems, stems or leaves of plants such as rice, wheat, sugarcane and corn, and a proper amount of quick lime, and the weight ratio of the solution A to the plant raw material B to the quick lime is 65: 30: 5. According to the invention, not only is recycling of the straws and the livestock and poultry manure realized, but also the straws and the livestock and poultry manure can be used for producing electricity, heat, cold, biogas and organic fertilizers after being treated, so that the resource utilization of the straws and the livestock and poultry manure is improved. Internal circulation of electric power and heat energy is achieved, comprehensive benefits and economic benefits of environmental protection can be greatly improved, and recycling and harmless utilization of straw is achieved. Through biomass energy electric heating cold air fertilizer poly-generation integration, a terminal product with large market potential and demand is formed, a biomass industry chain is expanded, and green and healthy development of the biomass industry is promoted.