150results about How to "Increase porosity" patented technology

The invention discloses an upper cured tobacco baking method belonging to the field of cured tobacco baking concocting technology. The feed preparation procedure selects the upper tobacco in delay harvest or half plant harvest mode which harvests leaf and main trunk one time. Rod hanging procedure bakes the half plant of upper cured tobacco stem and leaf together without separating the same. Baking procedure employs three-section baking method, wherein all sections of the baking time are prolonged for more than 3 hours, and the early temperature of bake-yellowing is reduced for 1 to 2 DEG C. After-baking procedure picks the leaf off from the trunk when the leaf becomes a little soft and the main trunk becomes hard and brittle after being taken off from bed. The invention can, in average, enhance orange smoke rate of the upper tobacco for 5.0 % and first-rate tobacco rate for about 4.0 %, price of original tobacco for 1 Yuan per kilogram.

The invention discloses a pretreatment method of lignocellulose by using microwave-assisted alkaline sodium sulfite, belonging to the technical fields of biomass resource utilization and agricultural waste comprehensive utilization. The method comprises the following steps: by using lignocellulose as a raw material, pulverizing, screening, and pretreating by using microwave-assisted alkaline sodium sulfite to lower the alkali consumption and enhance the pretreatment effect of the alkaline sodium sulfite; and carrying out solid-liquid separation, flushing the solid residue with an alkaline sodium sulfite solution, and washing with water to obtain the lignocellulose pretreatment product with favorable enzymolysis effect. The method can better remove lignin and reduce the inhibition effect of lignin on cellulose degradation, thereby effectively enhancing the conversion efficiency from lignocellulose to monosaccharide. The method reduces the chemical reagent consumption, is beneficial to environmental protection, and lowers the production cost, thereby generating higher economic value.

The invention discloses a self-propulsion trailing suction hopper dredger. The self-propulsion trailing suction hopper dredger comprises a dredger body; a movable cover is provided with a driving pressing block; a second driving device is arranged at the top of the driving pressing block; the movable cover is internally provided with a translation mechanism; the translation mechanism is provided with a movable through hole; a rake tooth shell is arranged in the movable cover; the rake tooth shell is internally provided with an engagement block; rake teeth are arranged on an inclined plane of the engagement block; a fixed plate is arranged on the top surface of the engagement block; positioning shafts are arranged on the two sides of the fixed plate; a first high-pressure water spraying device is vertically arranged on the inner side of the movable cover; and a second high-pressure water spraying device is obliquely arranged at the outer end of the movable cover. The first high-pressure water spraying device and the second high-pressure water spraying device are matched with each other and spray water to each other, so that underwater soil blocks are loosened; meanwhile, the rake teeth are driven to move up and down; one section of notch is opened underwater, and hard sludge can be conveniently raked when the rake teeth rake the sludge, so that digging resistance of a rake head is reduced, and the digging capability and dredging efficiency of the rake head are improved; and the self-propulsion trailing suction hopper dredger has the effects of high sludge digging efficiency and low production cost.

The invention belongs to a process for preparing white carbon black and in particular relates to a process for producing precipitated white carbon black by silicon tetrachloride. The process comprises the following steps: adding the silicon tetrachloride into 29 to 33 mass percent hydrochloric acid aqueous solution which contains a dispersant, controlling the temperature to between 28 and 45 DEG C for reaction to generate silica sol and chlorine hydride gas, standing and ageing the silica sol to form colloidal white flocculent sediment, filtering, separating and washing the sediment, and pelletizing and drying the sediment to obtain the precipitated white carbon black. The process has short flow, relatively simple production equipment and process control, and available raw materials, effectively utilizes the silicon tetrachloride, totally reclaims the product chlorine hydride, reduces the processing expense, the amount of waste acid and the environmental pollution, and has low production cost, wide application and large market capacity.

The invention provides a carbon-based urea fertilizer, which is a fertilizer obtained by mixing biological black carbon, urea, effective microbial inoculum and a synergist. With the carbon-based urea fertilizer, the wastage rate of the urea in soil can be reduced, the fertilizer investment cost is reduced, bad influences on soil and ground water environments are avoided, and the effects of fertilizer reduction and emission reduction are realized simultaneously; the activity of urease in the soil is activated and improved and the urea is transformed into a nitrogen nutrient element which can be directly absorbed and utilized by crops; the bad influences of biuret in the urea on the crops can be greatly reduced; soil hardening caused by only using the urea is avoided; the looseness degree of the soil is improved and the soil hardening phenomenon is relieved; a soil crumble structure is increased, the volume weight of the soil is reduced, the physiological activity of the soil is improved, the soil environment is improved, and the fertilizer storage capacity and the water retaining capacity of the soil are improved; trace elements which are lacked by only applying phosphorus and are needed by crops are supplemented; and therefore, the crops can absorb nutrients in a more balanced way and the obvious production increasing effect can be realized.

The invention relates to the technical field of crop cultivation, in particular to a peanut high-yield cultivation method. The method includes the following steps that firstly, after crops are harvested in autumn in first year, deep scarification is conducted on a planting land once, the thickness of the soil loosening layer of the planting land ranges from 45 cm to 50 cm after deep scarification, and natural airing is conducted after the planting land is loosened deeply. According to the peanut high-yield cultivation method, the land leveling procedure is simplified, the soil structure is not destroyed, work is convenient and fast to conduct, the soil loosening degree is increased, and a hardening layer is broken through effectively. Compared with peanut plastic film mulching and cultivation in the prior art, the soil loosening depth is deepened by 15 cm to 20 cm, the soil loosening degree is increased greatly, the water-retaining property of soil is improved, the soil condition of the region where soil is easy to harden is improved greatly, growth of peanuts is promoted, the yield per mu of peanuts is increased, water resources are saved, the production cost is lowered, and the income of peasant households is increased greatly.

The invention provides a sintering method with a part of return mine being sintered without being pelletized. The method comprises the following steps: batching; material mixing; secondary mixing for pelletization; material distributing; igniting; sintering; crushing and cooling; screening; index detecting for agglomerate. The sintering raw materials prepared in step of batching comprise the following materials: 40-80% of hematite, 5-50% of return mine, 0-10% of quicklime, 0-10% of dolomite, 0-10% of limestone and 3-8% of coke powder; before the step of material mixing, 3-50% of the return mine is taken out, and directly added in the sintering raw materials after the secondary mixing for pelletization without participating in the steps of material mixing and the secondary mixing for pelletization. The method can improve pelletization effect and sintering air permeability, and utilization coefficient of sintering.

The invention provides a novel special liquid fertilizer for rice capable of comprehensively controlling plant diseases and insect pests, and a preparation method thereof. The novel special liquid fertilizer is prepared from the following components: 5 to 15 parts of urea-ammonium nitrate solution, 5 to 15 parts of ammonium polyphosphate solution, 5 to 10 parts of potash fertilizer, 0.1 to 2 parts of microelement, 20 to 50 parts of water, 1 to 10 parts of homemade plant pesticide extracting solution, 1 to 2 parts of soil conditioner, 1 to 5 parts of natural activity organic materials, and 1 to 5 parts of natural surfactant, wherein the homemade plant pesticide extracting solution is prepared from mixing trifolium pratense, folium artemisiae argyi, herba houttuyniae, semen persicae and black false hellebore in proportion, and extracting with water. The preparation method comprises the steps of adding the prepared urea-ammonium nitrate solution and the ammonium polyphosphate solution in proportion according to a formula into a mixing tank; then adding the other metered materials into the mixing tank; stirring, dissolving and filtering to prepare the liquid fertilizer. The liquid fertilizer provided by the invention is convenient to use and good in effect, and is a special multi-functional environment-friendly liquid fertilizer for the rice.

The invention discloses a synergistic-denitration type liquid boiler clinker removal agent and a preparation method and application thereof and belongs to the field of clean combustion of coal.The clinker removal agent is prepared from, by weight, 5-20% of magnesium acetate, 1-5% of copper nitrate, 1-5% of nickel nitrate, 2-10% of ammonium nitrate, 3-10% of boric acid, 0.5-2% of cerium nitrate and the balance water.The clinker removal agent is atomized and added into a boiler through jetting, magnesium acetate is decomposed to generate MgO and alkyl (CHi) at the high temperature, the fuel intermediate CHi has reduction action for NO, the content of NO in flue gas can be reduced, the synertistic effect is achieved for denitration, generated nanoscale MgO pores are high in specific surface area, the clinker removal agent can serve as a catalytic carrier of a denitration reaction and also can react with a low-melting-point compound in a clinker layer to raise the clinker melting point so that clinker can be loosened and be crispy, the clinker removal agent is small in consumption and can obviously reduce the boiler coking phenomenon, and meanwhile the good synergistic NO removal effect is achieved.

The invention provides a high-yield planting method of Citrus grandis'Tomentosa' and belongs to the technical field of CitrusgrandisOsbeckvar.tomentosaHort.. The method comprises the following steps of soil preparation, transplanting, fertilization management, flower-formation promoting, fruit retention and disease and insect pest control. The porousness of soil can be increased through fine sand, and the growth of plant roots is promoted; by the addition of quicklime and an EM bacteria solution, microbial decomposition during fermentation is accelerated, and germs, eggs and the like in raw materials are eliminated. The raw materials which are used in the method and comprise cow dung, pig manure, peat, plant ash, pine needle leaves, rape seed cakes and peanut cakes contain relatively comprehensive microelements required for the growth of plants. After cottonseed hulls are fermented, a lot of crude proteins can be obtained and then decomposed into polypeptides or amino acids so that the growth of the roots can be promoted, seedlings are strong, plants are healthy, the photosynthesis of leaves, the anti-adversity ability and the disease and insect resistance of crops are enhanced, and the method has obvious yield-increasing effects on various crops.