58results about How to "Efficient and environmentally friendly" patented technology

The invention discloses a special sustained-release fertilizer for watermelons by using biomass granular carbon as a matrix and a preparation method thereof. Granular carbon prepared from corn cob, peanut hulls, rice hulls, edible fungus substrate and other agricultural waste biomasses is used as a matrix material, and is compounded with nitrogen, phosphor, potassium and other nutritional elements which are necessary to growth and development of watermelon by utilizing the microporosity and strong adsorptivity of the granular carbon to prepare the granular-biomass-carbon-based special sustained-release fertilizer for the watermelons. The biomass granular carbon used in the invention is black biomass granular carbon particles formed after agriculture waste biomass is incompletely combusted in a low-oxygen condition, has multiple properties similar to soil humus, has strong capacities of adsorbing and maintaining nutrition and moisture, and can be used for stimulating crop growth with good sustained release performance to nitrogen, phosphor and potassium, so that the requirement of watermelons for nutritions in the whole growing period can be effectively supplied when the prepared sustained release fertilizer is applied once. Furthermore, the fertilizer has the characteristics of increasing the soil productivity, improving the soil structure along with high efficiency and environmental friendliness and the like, and is advantageous to large-scale popularization and application in watermelon production.

The invention relates to a processing method of a leather retanning agent, in particular to a leather retanning agent of a hyperbranched polymer with terminal aldehyde group, which aims to solve the problems in the prior art of low reaction activity, large addition and unobvious effect. The technical proposal is that: firstly, the acrylate and the alcohol amine are blended, a proper amount of a fatty alcohol as the solvent with a low-carbon chain is added into the mixture, the solvent are removed by ice-dry after the agitation and reactions, acid catalyst are added to carry out acid catalysis, the mixture reacts in vacuum and hyperbranched polyamine-ester with the terminal aldehyde group is obtained; secondly, the hyperbranched polyamine-ester with the terminal aldehyde group and the glutaraldehyde water in which is removed by distillation are blended, acid catalyst is added into the mixture and then the mixture is agitated and takes reactions. The leather retanning agent has the advantages that: the tear strength of collagen fiber is increased significantly, the processing method of the leather retanning agent provides favorable improvement to the collagen fiber with a small addition; thus, the leather retanning agent has the advantages of high efficiency and environment protection.

The invention discloses a slow release fertilizer special for sweet potatoes by using biomass granular carbon as a matrix and a preparation method for the slow release fertilizer. Granular carbon prepared from agricultural wastes such as corn cobs, peanut shells, rice hulls and edible fungi matrix are used as a matrix material; and based on the micro-pores and strong adsorption capability of the matrix material, the granular biomass carbon-based slow release fertilizer special for the sweet potatoes is prepared by compounding the matrix material and nitrogen, phosphorus, potassium and other nutritional elements required by growth and development of the sweet potatoes.. The biomass granular carbon is black biomass granular carbon granules formed after the agricultural waste biomass is incompletely burnt under the low-oxygen condition, has multiple properties similar to soil humus and strong adsorption and nutrient and moisture holding capabilities, can stimulate growth of crops, and has good slow release performance on nitrogen, phosphorus and potassium; when the prepared slow release fertilizer is applied at one time, the requirements of the sweet potatoes for nutrients in the whole growth period can be effectively met; and the slow release fertilizer has the characteristics of increasing soil fertility, improving the structure of soil and realizing high efficiency and environment friendliness, and is beneficial to large-scale popularization and application in the production of the sweet potatoes.

The invention discloses a special sustained-release fertilizer for yam by using biomass granular carbon as matrix and a preparation method thereof. Granular carbon prepared from corn cob, peanut hulls, rice hulls, edible fungus substrate and other agricultural waste biomasses is used as a matrix material, and is compounded with nitrogen, phosphor, potassium and other nutritional elements which are necessary to growth and development of yam by utilizing the microporosity and strong adsorptivity of the granular carbon to prepare the granular-biomass-carbon-based special sustained-release fertilizer for yam. The biomass granular carbon used in the invention is black biomass granular carbon particles formed after agriculture waste biomass is incompletely combusted in a low-oxygen condition, has multiple properties similar to soil humus, has strong capacities of adsorbing and maintaining nutrition and moisture, and can be used for stimulating crop growth with good sustained release performance to nitrogen, phosphor and potassium, so that the requirement of yam for nutritions in the whole growing period can be effectively supplied when the prepared sustained release fertilizer is applied once. Furthermore, the fertilizer has the characteristics of increasing the soil productivity, improving the soil structure along with high efficiency and environmental friendliness, and the like, and is advantageous to large-scale popularization and application in yam production.

The invention relates to a sustained-release fertilizer taking biomass granular carbon as a matrix and specially used for melon and a preparation method of the fertilizer. The method comprises the following step of: compounding granular carbon which is prepared from agricultural and forestry waste biomass such as corncob, peanut shells, rice husks and an edible fungus matrix and is taken as a matrix material with nitrogen, phosphorus, potassium and other nutrient elements which are necessary to the growth and development of the melon by using the multiple micropores and high adsorption capacity of the granular carbon and using bentonite or clay as a binder to prepare a granular biomass carbon-based sustained-release fertilizer special for the melon. The biomass granular carbon is black carbon powder granules (carbon black) formed after the biomass is subjected to incomplete combustion under the anoxic condition, has multiple characteristics similar to those of soil humus (humic acid), is high in nutrient and water adsorbing and retaining capacity, can stimulate crop growth, and is high in nitrogen, phosphorus and potassium sustained-release performance, so that the sustained-release fertilizer prepared from the biomass granular carbon can meet the requirement in the whole growth and development period of the melon after being applied at one time, has the characteristics of increasing soil fertility, improving a soil structure, achieving high efficiency and environment friendliness, and the like, and is wide in application prospect.

The invention discloses a phosphorous-containing epoxy resin amine curing agent and a preparation method thereof, and relates to a chemical synthetic agent and a preparation method thereof. Preparation raw materials include pentaerythritol ester rosin (PER), phosphorus oxychloride (POCl3) and ethidene diamine. The preparation method for the curing agent comprises the following two steps: firstly, producing a reaction of PER and POCl3 under a certain condition to generate a phosphorous-containing intermediate, namely spirobisphosphate diphosphonic chloride (SPDPC); secondly, producing a stirring reaction of SPDPC and ethidene diamine for a certain time by introducing inert gas, performing treatment of filtering, washing, drying and the like on a product, and obtaining faint yellow powdery solid. A compound has relatively high thermal stability and expandability as well as high char yield, and can be used as an epoxy resin curing agent for improving flame-retardant performance of a cured product. A process is simple in production condition, relatively high in product purity and yield and simple and convenient in post-treatment process.

The invention discloses a slow-release fertilizer special for a lotus root using biomass particle carbon as a matrix and a preparation method thereof. The particle carbon prepared by agricultural waste biomass such as corn cobs, peanut hulls, rice husks and edible fungus matrixes is the matrix material; the particle carbon is compounded with nitrogen, phosphorus, potassium and other nutrient elements which are needed by the growth of lotus roots through plurality of micropores and strong capacity of the particle carbon, so that the granular biomass carbon-based slow-release fertilizer special for the lotus root is prepared. The biomass particle carbon used by the slow-release fertilizer is black biomass particle carbon particles which are generated by incompletely burning the agricultural waste biomass under a low oxygen condition; the biomass particle carbon has a plurality of features similar to the features of soil humus, strong capacities of absorbing and maintaining nutrients and water, and good slow-release performance for nitrogen, phosphorus and potassium, and also can stimulate the growth of crops; the slow-release fertilizer prepared in such way is fertilized once, the nutrients required by lotus roots in the whole growth phase can be effectively supplied; and the slow-release fertilizer has the characteristics of increasing soil fertility, improving soil structure, efficiency, environment protection and the like, and is in favor of being large-scale popularized and applied in lotus root production.

The invention discloses an epoxy resin flame retardant containing phosphorus and nitrogen and a preparation method of the epoxy resin flame retardant, and relates to a chemical curing agent and a preparation method thereof. The epoxy resin flame retardant is prepared from the following raw materials: phosphaphenanthrene (POPO) and toluene-2,4-diisocyanate (2,4-TDI). The method can be accomplished through only one step. POPO and 2,4-TDI react with each other for a certain time under a certain condition, products are subjected to filtering, washing and drying processing, and obtained products are white solid. The flame retardant has good compatibility with epoxy resin, can be completely dissolved into an epoxy resin curing system at a certain temperature, can be cured into a whole body with epoxy resin, is small in influence on the mechanical property of a cured material, and can effectively improve the flame retardation of epoxy resin. The flame retardant is simple in technology production condition, high in purity and yield, and simple in post-processing process.

The invention provides a DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) modified anhydride epoxy resin flame-retardant curing agent and a preparation method thereof and relates to a chemical synthesis agent and a preparation method thereof. The curing agent comprises the following raw materials: DOPO and 2-methyl tetrahydrophthalic phthalic anhydride. The flame-retardant curing agent is simple in a preparation process and can be prepared only by a one-step reaction, that is, DOPO and 2-methyl tetrahydrophthalic phthalic anhydride are mixed with a solvent under an inert gas atmosphere for a reaction for hours at a certain temperature, and rotary evaporateion and solvent removal are performed, so as to obtain a product; or DOPO reacts with 2-methyl tetrahydrophthalic phthalic anhydride react with each other for hours under the condition of no solvent and then are cooled to the room temperature, so as to obtain an acquired product; and the products obtained under different proportion conditions are colorless liquid to light yellow liquid. In a processing process, the raw materials can be well mixed with epoxy resin and can be cured into one together with the epoxy resin; and the flame-retardant curing agent can be taken as a curing agent of the epoxy resin, and the flame retardant property of the epoxy resin can be effectively improved. The preparation method is simple and convenient, and modified anhydride curing agents with different phosphorus contents can be prepared as required.

Relating to a flame retardant and a preparation method thereof, the invention provides an epoxy resin flame retardant containing phosphorous and nitrogen and a preparation method thereof. The preparation raw materials include: phenylphosphonic dichloride and o-phenylenediamine. The preparation method of the flame retardant includes: under the introduction of an inert gas, carrying out stirring reaction on phenylphosphonic dichloride (DCPPO) and o-phenylenediamine for a period of time, and conducting filtering, washing, drying and other treatment on the product to obtain a white solid. The compound has good compatibility with epoxy resin, can be cured together with epoxy resin into a whole, has little influence on the mechanical properties of the cured product, can be used as a curing agent of epoxy resin, and also can effectively improve the flame retardance of epoxy resin. The process provided by the invention has the advantages of simple production condition, high product purity and yield, and simple post-treatment process.

The invention discloses a special slow release fertilizer for a lawn using biomass granular carbon as a substrate and a preparation method thereof. Granular carbon prepared from corn cobs, peanut shells, rice hulls, edible fungus substrates and other agricultural waste biomass is used as the substrate material; and through the microporosity and the high adsorptive capacity, the substrate material is compounded with nitrogen, phosphorus, potassium and other nutrient elements necessary for the growth and development of the lawn, thus preparing the granular biomass carbon-based special slow release fertilizer for the lawn. The biomass granular carbon used in the invention is a black biomass granular carbon granule formed by the incomplete combustion of agricultural waste biomass under a low-oxygen condition, has multiple features similar to soil humus, has a high capability of adsorbing and keeping nutrient and moisture, can stimulate the growth of crops, and has favorable nitrogen / phosphorus / potassium slow release performance. When being applied once, the slow release fertilizer prepared from the biomass granular carbon can effectively supply the nutrient required by the lawn for the whole growth period, has the characteristics of soil productivity increasing, soil structure improving, high efficiency, environment friendliness and the like, and is favorable for large-scale popularization and application in lawn culture.

The invention relates to an efficient environment-friendly black titanium dioxide-based photocatalyst and a preparation method thereof, wherein the black titanium dioxide-based photocatalyst comprisesa loading substrate and co-doped black titanium dioxide loaded on the loading substrate, and the loading substrate is at least one selected from one-dimensional nano-tubes, one-dimensional nano-wires, one-dimensional nano-rod, one-dimensional nano-fiber and a two-dimensional layered material.

The invention discloses a special slow release fertilizer for loquat by using biomass granular carbon as a matrix and a preparation method thereof. Granular carbon prepared from agricultural wastes such as corn cobs, peanut shells, rice hulls, edible fungi matrix and the like are used as a matrix material; and based on the micro-pores and strong adsorption capability of the matrix material, the granular biomass carbon-based special slow release fertilizer for the loquat is prepared by compounding the matrix material and nitrogen, phosphorus, potassium and other nutritional elements required by growth and development of the loquat. The biomass granular carbon is black biomass granular carbon granules formed after the agricultural waste biomass is incompletely burnt under the low-oxygen condition, has multiple properties similar to soil humus and strong adsorption and nutrient and moisture holding capabilities, can stimulate growth of crops, and has good slow release performance on nitrogen, phosphorus and potassium; when the prepared slow release fertilizer is applied at one time, the requirements of the loquat for nutrients in the whole growth period can be effectively met; and the slow release fertilizer has the characteristics of increasing soil fertility, improving the structure of soil, realizing high efficiency and environment friendliness and the like, and is beneficial to large-scale popularization and application in the production of the loquat.

The invention discloses a special slow-release fertilizer for pineapples with biomass particle carbon as a matrix and a preparation method of the slow-release fertilizer. The particle carbon prepared from agricultural waste biomasses such as corncobs, peanut shells, rice husks and edible fungus matrixes is taken as the matrix material, and is compounded with nitrogen, phosphorus, potassium and other nutrient elements necessary for growth and development of the pineapples on the basis of micropores and high adsorption capacity of the particle carbon, thus obtaining the special slow-release fertilizer based on the granular biomass carbon for the pineapples. The biomass particle carbon adopted by the special slow-release fertilizer is black biomass carbon particles prepared from the agricultural waste biomasses which are incompletely combusted under a low-oxygen condition, has a plurality of characteristics similar to those of soil humus, has high capacities of adsorption and maintenance of nutrients and moisture, also can stimulate crop growth, and has good slow release performance to the nitrogen, phosphorus and potassium. The prepared slow-release fertilizer prepared from the biomass particle carbon can effectively supply nutrients required by the pineapples during an entire growth period after being applied once, and has the characteristics of improving land capability and a soil structure, being efficient and environment-friendly, and the like, thereby facilitating large-scale popularization and application of the fertilizer in production of the pineapples.

The invention discloses a special slow release fertilizer used for asparagus and taking biomass carbon particles as substrate and a preparation method of the special slow release fertilizer. Carbon particles prepared from corncob, peanut shells, rice husk, edible fungi substrate and other agricultural waste biomass are taken as the substrate material; a microporous property and strong adsorbability of the substrate material are utilized; the substrate material is compounded with nitrogen, phosphorus, kalium and other nutrient elements required for growth and development of asparagus so as to be made into granular biomass carbon slow release fertilizer special for asparagus. The biomass carbon particles used in the fertilizer are black biomass carbon particles formed after uncompleted combustion of agricultural waste biomass under the hypoxia condition, have various characteristics like soil humus, have very strong capabilities of adsorbing and keeping nutrient and water, can stimulate growth of crops, and have good performance in slow release of nitrogen, phosphorus and kalium. Therefore, after the prepared slow release fertilizer is used once, the requirements on nutrient of the whole growing period of asparagus can be met effectively, and the slow release fertilizer has the characteristics of increasing soil productivity, improving the soil structure, being efficient and environment-friendly and the like, and is favorable for large scale popularization and application in production of asparagus.

The invention comprises a stump grubber (10, 50) and a method of utilising it for the grubbing of stumps (38) and a method for preventing fungus disease such as root rot. Attached on the frame (14, 54) of the stump grubber are coupling means (13, 53) for coupling the stump grubber to a work machine (12, 52) and gripping means (32, 34, 36, 70) for gripping the stump (38) and a blade (18, 58) arranged to cut downwards to sever the roots (46) around the stump (38). The gripping means (32, 34, 36, 70) comprise no less than four spikes or blades (32, 34, 36, 71-75) arranged to penetrate into the stump (38). Also supported on the frame (14, 54) are power means (24, 56), such as a hydraulic cylinder for moving the gripping means (32, 34, 36, 70) and the cutting blade (18, 58) in a vertical direction relative to each other to lift the stump (38) from the ground (44).

The invention discloses a special slow release fertilizer for walnut by using biomass granular carbon as a matrix and a preparation method thereof. Granular carbon prepared from agricultural wastes such as corn cobs, peanut shells, rice hulls, edible fungi matrix and the like are used as a matrix material; and based on the micro-pores and strong adsorption capability of the matrix material, the granular biomass carbon-based special slow release fertilizer for the walnut is prepared by compounding the matrix material and nitrogen, phosphorus, potassium and other nutritional elements required by growth and development of the walnut. The biomass granular carbon is black biomass granular carbon granules formed after the agricultural waste biomass is incompletely burnt under the low-oxygen condition, has multiple properties similar to soil humus and strong adsorption and nutrient and moisture holding capabilities, can stimulate growth of crops, and has good slow release performance on nitrogen, phosphorus and potassium; when the prepared slow release fertilizer is applied at one time, the requirements of the walnut for nutrients in the whole growth period can be effectively met; and the slow release fertilizer has the characteristics of increasing soil fertility, improving the structure of soil, realizing high efficiency and environment friendliness and the like, and is beneficial to large-scale popularization and application in the production of the walnut.

The invention belongs to the technical field of advanced treatment of industrial wastewater, and particularly relates to a method for advanced treatment of organic matter in high-salt wastewater underthe synergism of electrochemistry and persulfate. In the method for advanced treatment of organic matter in high-salt wastewater under the synergism of electrochemistry and persulfate, in combinationwith the convenience of high salt content and low solution resistance of high-salt wastewater, based on the principle of sulfate free radical oxidation, the direct and indirect oxidation action of amicro electric field is utilized to make persulfate generate more free radicals to remove organic matter on the basis of direct oxidation for organic matte removal, refractory organic matter can be effectively removed, the organic matter removal rate can reach 90% or above, and the problem that deep removal of organic matter in high-salt and high-chlorine wastewater is difficult can be solved. Compared with an existing conventional persulfate advanced oxidation treatment method, the method has the advantages that it is not needed to add any activator (like iron), secondary pollution caused byactivators is effectively avoided, and the method has high efficiency and environmental friendliness.

The invention relates to a fire retardant and a preparation method thereof, and concretely relates to a phosphorus-nitrogen type fire retardant and a preparation method thereof. The structural formula of the phosphorus-nitrogen type fire retardant is shown in the description. Raw materials for preparing the fire retardant comprise 4,4'-diaminodiphenylmethane, glutaraldehyde and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). The preparation method of the fire retardant comprises the following steps: 1, reacting 4,4'-diaminodiphenylmethane with glutaraldehyde under an inert gas condition to synthesize an intermediate; and 2, reacting the synthesized intermediate with the DOPO, and carrying out filtering, washing and drying treatment to obtain the fire retardant. The fire retardant has the characteristics of no halogen and low toxicity, and can be applied to polymeric materials in order to improve the fire retardation performance of the polymeric materials.

A sleeve type crop oxygenation irrigation system comprises a control system, an air supply integration system, a water supply integration system, a main air pipe, a main water pipe, a branch air pipe, a branch water pipe and a water-air combiner. The sleeve type crop oxygenation irrigation system is characterized in that the air supply integration system and the water supply integration system are respectively connected with the control system, an air outlet of the air supply integration system is connected with the main water pipe, and a water outlet of the water supply integration system is connected with the main water pipe. The main air pipe and the main water pipe is connected with the branch air pipe and the branch water pipe respectively through the water-air combiner, the branch air pipe is installed in the branch water pipe through the water-air combiner, and the branch air pipe and the branch water pipe are provided with a plurality of pores for inside and outside communication. The sleeve type crop oxygenation irrigation system has the advantages of efficient oxygenation, water saving, energy saving and environmental protection and is of great significance for promoting crop yield and income increase, saving water resources and achieving agricultural ecological sustainable development.

The invention relates to a processing method for reducing the solubility of a polyvinyl alcohol (PVA) film, which comprises the following steps: putting the PVA film in a humid environment with the relative humidity more than 90% for 24-28 hours; putting the PVA film on a transmission device which is positioned right below a nozzle, and enabling the PVA film to horizontally pass through the nozzle; and processing the PVA film by using normal atmosphere plasma jet for 1-3min in the humid environment with the relative humidity more than 90%. The method of the invention has simple technology, high efficiency and no pollution and is suitable for industrial application.

Te invention relates to a synthetic flame retardant and a preparation method thereof, and concretely relates to a reactive phosphorus flame retardant and a preparation method thereof. Preparation raw materials used in the invention comprise PEPA (1-oxyphospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2.2.2]octane), phosphorous oxychloride (POCl3), polyethylene glycol and chloropropylene oxide. The preparation method of the flame retardant comprises the following steps: 1, reacting the PEPA with phosphorous oxychloride under certain conditions to generate an intermediate; 2, reacting the synthesized intermediate with polyethylene glycol under certain conditions to generate a new polymer; and 3, reacting chloropropylene oxide with the polymer to generate a final product, filtering the product, washing the filtered product, and drying the washed product to obtain a white solid. The phosphorus content of the above disclosed product is 10% or above, and the compound has good flame retardation performance. The preparation method of the product has the advantages of simplicity, simple post-treatment and development potential.

The invention discloses an epoxy resin flame retardance curing agent containing phosphorus and nitrogen and a preparation method of the epoxy resin flame retardance curing agent, and relates to a chemical curing agent and a preparation method thereof. Preparation raw materials comprise phosphorus oxychloride, 1-oxy-phospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2.2.2]octane, and m-xylylenediamine. The preparation method comprises the following two steps: firstly, ensuring that phosphorus oxychloride (POCl3) and 1-oxy-phospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2.2.2]octane (PEPA)react with each other in a certain condition, so as to generate phosphorus containing intermediate; secondly, ensuring that the intermediate obtained in the first step and m-xylylenediamine are stirred and react with each other for a certain time with the leading of inert gas, and carrying out filtering, washing and drying to obtain white solid. The curing agent has good compatibility with epoxy resin, can be cured into a whole body with epoxy resin, and is small in influence on the mechanical property of a cured material, can not only serve as a curing agent for epoxy resin, but also effectively improve the flame retardation of epoxy resin.

The invention provides a phosphorus-nitrogen intumescent epoxy resin flame retardant and a preparation method thereof, relating to a chemical synthesis agent and a preparation method thereof. Preparation raw materials include phosphorus oxychloride, diethylamine and glycidol. The method for preparing the flame retardant comprises the following two steps: I. reacting phosphorus oxychloride (POCl3) and diethylamine (EDA) under certain conditions to generate a phosphorus-nitrogen intermediate diethylphosphoramidic dichloride (DPAD); II. stirring DPAD and glycidol to react for a certain time under the condition of inert gas import and carrying out filtration, washing, rotary evaporation, drying and other treatment on the product, thus obtaining a faint yellow liquid. The compound has good compatibility with epoxy resin, can be cured with epoxy resin into one, has smaller effects on the mechanical properties of cured products, can serve as an epoxy resin reactive diluent and can conduce to effectively improving the flame retardance of epoxy resin. The process is simple in production conditions, higher in product purity and yield and simple and convenient in after-treatment process.

The invention discloses a preparation method for acetic acid octanoic acid cellulose ester, and relates to the technical field of cellulose modification. The preparation method comprises the followingsteps: carrying out mixing reaction on acetic anhydride, n-caprylic acid and catalyst to obtain coreaction agent; carrying out mechanical activation preprocessing on cellulose; putting the obtained coreaction agent and the processed cellulose into microwave reaction equipment to react to obtain the crude product of the acetic acid octanoic acid cellulose ester; carrying out post-processing on theobtained crude product of the acetic acid octanoic acid cellulose ester to obtain an acetic acid octanoic acid cellulose ester product. The preparation method has the advantages of short reaction time and high reaction efficiency, and the preparation process of the cellulose ester is shortened to 1-2h from 5-10h of a traditional liquid phase method. The prepared acetic acid octanoic acid cellulose ester is high in substitution degree, and the cellulose ester with the high substitution degree is prepared under a condition of short microwave time.

A blower spray device is provided having a housing which comprises an electrically driven blower and a spray nozzle, and having a liquid supply line opening into the spray nozzle. The housing has a funnel-shaped intake channel and a tubular blow-out channel, and an electrical valve is provided in the liquid supply line to activate and deactivate the liquid supply to the spray nozzle. An electronic controller having a regulating unit for the electric blower is further provided to adjust the air flow velocity.

The invention discloses a rice protein negative pressure series crushing and sucking device. The device comprises a crushing machine, a fan and a discharging bin. The crushing machine comprises a primary crusher and at least one secondary crusher, and the primary crusher and the secondary crushers are connected through communicating vessels. A collecting hopper is arranged on the primary crusher. The fan, the discharging bin and the secondary crushers are sequentially connected through pipelines. On the basis of the method, a matched using method is provided, that is, air and materials are completely separated in the whole device in a negative pressure state under the action of the fan and the crushing machine. The device and the using method has the beneficial effects that the requirements that materials are not sprayed out, blockage is avoided, the environment is protected, and the working efficiency is improved in the crushing process of industrial production can be met, and the effects of reasonably adjusting the sucking strength and free of any pollution can be achieved.

The invention provides an epoxy resin modified amine flame-retarding curing agent and a preparation method thereof and relates to a chemical synthetic agent and a preparation method thereof. The epoxy resin modified amine flame-retarding curing agent is prepared from the following raw materials: phosphorus oxychloride (POCl3), pentaerythritol (PER) and 1,3-bis(aminomethyl)-cyclohexan (1,3-BAC); a method for preparing a fire retardant comprises the following two steps: step 1, taking the POCl3 and the PER to react under a certain condition to generate a phosphorus-containing intermediate SPDPC (Spirobisphosphate Diacyl Chloride); step 2, stirring the intermediate obtained in the step 1 and the 1,3-BAC to react for certain time under the condition that inert gas is introduced; filtering, washing and drying a product and so on to obtain white solid powder. The compound has good dispersiveness in epoxy resin and can be cured with the epoxy resin together; the compound can be used as a curing agent of the epoxy resin and can also effectively improve the flame-retarding property of the epoxy resin. The epoxy resin modified amine flame-retarding curing agent and the preparation method thereof have the advantages of simple process production conditions, relatively high purity and yield of the product and simple and convenient post-treatment process.

A hot water boiler with double combustion chambers comprises a boiler body. A water heating chamber, the first combustion chamber, the second combustion chamber, a smoke collection chamber, an ash chamber and a smoke filter box are arranged in the boiler body. The water heating chamber is arranged at the upper left end inside the boiler body. The first combustion chamber is arranged at the lower end of the water heating chamber. The smoke collection chamber is arranged at the right ends of the water heating chamber and the first combustion chamber. The ash chamber is arranged at the lower ends of the first combustion chamber and the smoke collection chamber. The second combustion chamber is arranged in the middle of the interior of the water heating chamber. A smoke box is arranged inside the smoke collection chamber. The interior of the smoke box is composed of an upper cavity and a lower cavity. The upper right end of the first combustion chamber is connected with the lower cavity through a first smoke conveying pipe. The lower right end of the second combustion chamber is connected with the upper cavity through a second smoke conveying pipe. The upper cavity is connected with the smoke filter box through a heat exchange smoke pipe. The lower cavity is connected with the smoke filter box through a heat exchange smoke pipe. The hot water boiler is provided with the two combustion chambers, the heat exchange area is enlarged, the heat efficiency is improved, and the water heating speed is increased.

The invention relates to a denitration, desulfurization and dust-removal device and a method applying the same. The device is sequentially connected with at least one denitration, desulfurization and dust-removal module in the flow direction of the combustion flue gas; each denitration, desulfurization and dust-removal module comprises a gas mixing unit and an air cleaning unit which are connected sequentially, wherein the gas mixing unit comprises a gas mixing inner cavity as well as a flue gas inlet and an air inlet communicated with the mixing inner cavity; the air cleaning unit comprises a flue gas outlet which is communicated with a flue gas inlet of a next-stage denitration, desulfurization and dust-removal module. The denitration, desulfurization and dust-removal method provided by the invention utilizes air and water to realize stepped denitration, so that the concentration of nitride oxides is greatly reduced when particulate matters are removed, the sulfides also can be removed by introducing various wet-process desulfurization methods through the system, and thus, very import significance is achieved in occasions of coal-fired power plant smoke-gas treatment, adit dust removal, working environment air purification, restaurant and kitchen oily smoke removal, commercial or household air cleaning, and the like.