114results about How to "Adjust nutrient content" patented technology

The invention relates to the technical field of chemical engineering, and discloses a fertilizer capable of fixing soil heavy metal and a preparing method thereof. The fertilizer is prepared from, by weight, 9-11 parts of urea, 12-18 parts of phosphoric acid, 20-50 parts of alkaline potassium, 12-20 parts of reaction auxiliary, 0.6-1.5 parts of water, 15-25 parts of modified smectite powder, 0.6-1.0 part of calcium sulfate, 0.2-0.6 part of aluminum sulfate, 0.3-0.9 part of magnesium sulfate and 0.4-1.2 parts of ferrous sulfate. The used reaction auxiliary can be used as a catalyst when urea reacts with phosphoric acid and can be used for removing heavy metal ions in soil, impurity removal is omitted, no effluent or waste gas is exhausted, raw materials used in production are fully and reasonably used, and the fertilizer has remarkable environment protection benefits.

The invention relates to the technical field of chemical industry, and discloses a method for preparing a dendrobium officinale nutrient fertilizer. The method comprises the following steps: determining the proportion of nutritive elements in the dendrobium officinale nutrient fertilizer by analyzing various nutritive elements absorbed in a growth process of dendrobium officinale, reacting phosphoric acid with carbamide to generate an intermediate, then introducing ammonia gas into the intermediate to produce ammonium dihydrogen phosphate, separating part of ammonium dihydrogen phosphate by crystallization so as to control the content of nitrogen and phosphorus in a solution to meet the proportion required by the growth of dendrobium officinale, and then adding potassium and other medium trace element compounds into the solution to prepare a fertilizer special for dendrobium officinale. According to a production method disclosed by the invention, raw materials can be fully used, produced ammonium dihydrogen phosphate is relatively good in quality, and the prepared fertilizer special for dendrobium officinale is relatively low in cost.

The invention relates to the technical field of chemical industry, particularly a production method for preparing ammonium phosphate and coproducing a special fertilizer for mulberry. By analyzing nutrient demand conditions in the mulberry growth process in combination with analysis and understanding of the defects in the ammonium phosphate product preparation technique, the preparation technique of the special combined compound fertilizer for mulberry is combined with the preparation technique of the ammonium phosphate product to perform complementation, thereby lowering the waste liquid discharge amount in the ammonium phosphate product preparation technique, avoiding the defect of lower ammonium phosphate product purity due to deep crystallization, and improving the quality of the ammonium phosphate product. The method enhances the mulberry growth rate, improves the mulberry yield and quality, prevents excessive elements from residing in soil due to improper matching of nutrient elements, lowers the soil hardening rate, enhances the land utilization ratio, and has obvious environmental protection value and economic benefit.

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing ammonium dihydrogen phosphate with a special astragalus membranaceus fertilizer as a byproduct. Through analysis on requirements on nutritional elements in the astragalus membranaceus growth process, analysis and realization of fertilization conditions of traditional astragalus membranaceus planting, research and discussion of the absorption conditions of crops on nitrogen, phosphorus and potassium, and analysis by combining with the defects in the preparation process of an ammonium dihydrogen phosphate product, a production process of the special fertilizer for astragalus membranaceus is combined with a preparation process of the ammonium dihydrogen phosphate product, so that the preparation process of the ammonium dihydrogen phosphate product and the preparation process of the special fertilizer for the astragalus membranaceus are complementary; production of the special fertilizer for the astragalus membranaceus is carried out by using liquid waste generated in the preparation process of the ammonium dihydrogen phosphate product; the added value of the product in the preparation process of the ammonium dihydrogen phosphate product is increased; the discharge of the liquid waste is lowered; and meanwhile, waste of nitrogen and phosphorus resources also can be avoided by the unnecessary deep crystal ammonium dihydrogen phosphate product in the ammonium dihydrogen phosphate process.

The invention relates to the field of chemical technique, especially to a production method for preparing monopotassium phosphate and a by-product a special fertilizer for Taxus chinensis. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of monopotassium phosphate, purity of the product monopotassium phosphate is raised, and a compound fertilizer containing N, P and K combined forms can simultaneously be produced. In addition, formaldehyde is added into a filtrate to prepare a controlled-release compound fertilizer. By the method, purity of monopotassium phosphate can be raised, and the produced special fertilizer for Taxus chinensis has good absorptivity. Meanwhile, the produced special fertilizer for Taxus chinensis can meet nutritional requirements of each period of growth cycle of Taxus chinensis. The special fertilizer is an efficient compound fertilizer.

The invention relates to the technical field of chemical industry, and discloses a method for preparing a nutritional fertilizer for apples. The method comprises the following steps: analyzing proportions of all nutritional elements required by the growth of apples by researching the amounts of absorption of all the nutritional elements from soil in the growth process of apples, reacting phosphoric acid with carbomite to generate an intermediate, introducing ammonia water into the intermediate to produce ammonium dihydrogen phosphate, crystallizing parts of ammonium dihydrogen phosphate to precipitate, and adjusting the content of nitrogen and phosphorus in a solution to meet the requirements of the growth of apples in order to prepare the nutritional fertilizer for apples. The preparation method has the advantages of full utilization of raw materials, no emission of waste liquids polluting environment, good quality of the prepared ammonium dihydrogen phosphate, and low cost of the prepared nutritional fertilizer for apples.

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing ammonium dihydrogen phosphate and a byproduct special fertilizer for radix scutellariae. Through analysis on requirements on nutritional elements in the radix scutellariae growth process, analysis and realization of fertilization conditions of traditional radix scutellariae planting, research and discussion of the absorption conditions of crops on nitrogen, phosphorus and potassium, and analysis by combining with the defects in the preparation process of an ammonium dihydrogen phosphate product, the production process of the special fertilizer for the radix scutellariae is combined with the preparation process of the ammonium dihydrogen phosphate product, so that the preparation process of the ammonium dihydrogen phosphate product and the preparation process of the special fertilizer for the radix scutellariae are complementary; production of the special fertilizer for the radix scutellariae is carried out by using liquid waste generated in the preparation process of the ammonium dihydrogen phosphate product; the added value of the product in the preparation process of the ammonium dihydrogen phosphate product is increased; the discharge of the liquid waste is lowered; and meanwhile, deep crystallization of the ammonium dihydrogen phosphate product in the ammonium dihydrogen phosphate process is unnecessary, thus waste of nitrogen and phosphorus resources can also be avoided.

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing calcium hydrophosphate with a special Chinese prickly ash fertilizer as a byproduct. Through analysis on the effective absorptive amount of nitrogen phosphorus potassium elements according to the fertilizer required by Chinese prickly ash, and adjustment and collocation of element content in a production process, the prepared composite fertilizer in a compound sate can meet the requirements of the Chinese prickly ash to the maximal extent while over-high cost caused by improper collocation of the elements in production of the composite fertilizer is reduced, and excessive elements are further prevented from being fed to soil to cause environmental pollution due to solidification of the composite fertilizer; meanwhile, the effective absorption rate of the prepared special Chinese prickly ash fertilizer is relatively high and can reach over 97.5%, nutrient elements left in a soil structure layer are relatively few, the damage caused by soil hardening is avoided, the growth environment of the Chinese prickly ash is improved, and the growth environment quality of the Chinese prickly ash is ensured.

The invention relates to the technical field of chemical industry, and discloses a method for preparing a nutritional fertilizer for wheat. The nutritional fertilizer for wheat is prepared according to nutritional element proportions required by the growth of wheat, obtained by analyzing the nutritional components absorbed in the growth process of wheat, so the utilization of the fertilizer is improved, the fertilization cost is reduced, the output of wheat in unit area is improved, the production cost of the nutritional fertilizer for wheat is low, and the preparation method has the advantages of simplicity, no discharge of pollutants, and environmental protection.

The invention relates to the technical field of chemical industry and discloses a method for preparing a polygonum multiflorum Chinese herbal medicine nutrition fertilizer. The method comprises the following steps: analyzing the ratio of the nutrient elements needed by growth of polygonum multiflorum by detecting the amount of various nutrient elements absorbed from soil in the polygonum multiflorum growth process, thereby obtaining the polygonum multiflorum fertilizer special for polygonum multiflorum. Phosphoric acid and carbamide react to generate an intermediate product, the intermediate product reacts with an alkaline calcium salt, and one part of monocalcium phosphate generated in the reaction is crystallized and separated out through control of the parameters in the reaction, so that the contents of nitrogen and phosphorus in the reaction solution are regulated to prepare the polygonum multiflorum Chinese herbal medicine nutrition fertilizer. According to the production method, the raw materials are fully utilized, and the prepared polygonum multiflorum Chinese herbal medicine nutrition fertilizer has the advantages that the yield and quality of the polygonum multiflorum can be improved, and the purity of the byproduct monocalcium phosphate is high.

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing monopotassium phosphate and a byproduct special fertilizer for medlar. The quality of the produced medlar compound fertilizer is guaranteed by virtue of molar ratio of raw materials in a production process and accurate analysis and detection of the filtrate in a crystallization step, and a waste liquid in the production process of a chemical engineering product is used as a raw material of the medlar compound fertilizer by way of adjusting the content of filtrate components, so that emission of the waste liquid is avoided and the production cost of the compound fertilizer is lowered. Meanwhile, the purity of a monopotassium phosphate product is improved, the production cost of the monopotassium phosphate product is lowered, and the environmental pollution is avoided. The production method has remarkable economic and ecologic benefits.

The invention relates to the technical field of chemical engineering, particularly a production method of a special fertilizer for preparing calcium hydrogen phosphate and coproducing pepper. The effective absorption amounts of nitrogen, phosphorus and potassium are analyzed according to the fertilizer demanded by the pepper, the contents of the nitrogen, phosphorus and calcium in the production process are regulated and matched, and the potassium component and other minor element compounds are added, so that the prepared combined-state compound fertilizer can maximally satisfy the demands of pepper and can be completely absorbed by the pepper (the absorption rate is up to 96.1%), thereby lowering the overhigh cost due to improper element matching in the compound fertilizer production and further avoiding the environment pollution due to solidification of the compound fertilizer since excessive elements are added into the soil.

The invention relates to the field of chemical technologies, and particularly relates to a production method for preparing monopotassium phosphate and coproducing a special fertilizer for capsella bursa-pastoris. Through carrying out research and analysis on the requirements on the contents of nutritional ingredients in capsella bursa-pastoris and carrying out regulation and collocation on the contents of elements in the technological process of production, a prepared combined compound fertilizer can maximally meet the demands of crops, so that a situation that the cost is too high due to improper element collocation in the production of the compound fertilizer is reduced, and a situation that the compound fertilizer solidifies the soil and then pollutes the environment because excessive elements are put into the soil is further avoided.

The invention relates to the technical field of chemical engineering, particularly to a production method for preparing an ammonium phosphate byproduct used as a special fertilizer for red peonies. Nutritional need conditions of the red peonies during growth are analyzed, defects in a preparation technology for ammonium phosphate products are combined to be analyzed and comprehended, and a preparation technology for a special combined compound fertilizer for the red peonies is combined with the preparation technology for the ammonium phosphate products, so that the two technologies are mutually complemented, the waste liquid discharge quantity in the preparation technology for the ammonium phosphate products is reduced, the defect of the lower ammonium phosphate product impurity caused by deep crystallization is overcome, and the quality of the ammonium phosphate products is improved; nutrient elements in waste liquids are adjusted and matched, so that the prepared special compound fertilizer for the red peonies can satisfy nutritional needs of the red peonies, the growing speed of the red peonies is increased, the yield and the quality of the red peonies are improved, the soil hardening rate is decreased, the land utilization rate is increased, and the method has the significant environmental protection value and the significant economic benefit.

The invention relates to the technical field of the chemical industry, and discloses a preparation method of a special fertilizer for cotton. A technical problem of soil hardening caused by the change of the structure of soil due to less autilization of fertilizers applied to cotton the residual of some element compounds in soil because the matching of the nutritional elements in present fertilizers cannot meet requirements of the nutritional elements in the growth process of cotton is solved. The method comprises the following steps: reacting phosphoric acid with carbomite to generate an intermediate, reacting the intermediate with an alkaline sodium salt, crystallizing parts of generated sodium dihydrogen phosphate to precipitate, adjusting the content of nitrogen and phosphorus in a reaction liquid to meet the growth requirements of cotton, and adding potassium and other medium trace element compounds in order to prepare the special fertilizer for cotton. The special fertilizer for cotton has the advantages of low production cost, and no discharge of waste liquids polluting the environment in the production process.

The invention relates to the technical field of chemical industry, in particular to a production method for a special watermelon fertilizer as an ammonium dihydrogen phosphate preparation byproduct. By changing temperature and other coefficients of wet process preparation of ammonium dihydrogen phosphate from phosphoric acid, the purity of the ammonium dihydrogen phosphate product is improved, also a compound fertilizer containing compound forms of N, P and K can be produced, the purity of ammonium dihydrogen phosphate can be enhanced, the produced special watermelon fertilizer has good absorptivity, and meanwhile formaldehyde is added to the filtrate to make a controlled release compound fertilizer. The produced special watermelon fertilizer can meet the nutritional needs of each period in the growth cycle, greatly increases the watermelon yield, and is an efficient compound fertilizer.

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing monocalcium phosphate and a byproduct special fertilizer for capsicum annuum. A preparation process of a monocalcium phosphate product and a preparation process of a special fertilizer for capsicum annuum are further combined by way of analyzing requirements for nutrients of special fertilizer for capsicum annuum and analyzing the defects in the monocalcium phosphate preparation process, so that in the monocalcium phosphate product preparation process, deep crystallization is not needed, thereby improving the purity of the monocalcium phosphate product and lowering the cost of extra purification in the prior art. By using the waste liquid, environmental pollution caused by massive discharge of elements such as phosphorus, calcium and nitrogen in the waste liquid is avoided, so that the production method has remarkable environmental protection value and economic benefit.

The invention belongs to the technical field of chemical engineering and particularly relates to a method for preparing potassium dihydrogen phosphate solution and coproducing a special fertilizer for sweet potatoes. By changing the temperature and other coefficients of the potassium dihydrogen phosphate solution which is prepared from phosphoric acid by adopting a wet process, the purity of the potassium dihydrogen phosphate solution can be improved, and meanwhile, a combined compound fertilizer containing N, P and K can be produced. In addition, by adding formaldehyde into a filtrate to prepare the controlled-release compound fertilizer and improving the purity of the potassium dihydrogen phosphate solution, the produced special fertilizer for sweet potatoes has good absorption rate and can meet the needs of sweet potatoes for nutrients in each period of the growth cycle and increase the yield of sweet potatoes. The special fertilizer is a high-efficient compound fertilizer.

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing diammonium hydrogen phosphate and a byproduct special fertilizer for oats. The fertilizer requirements of oats are analyzed, and the defects in processing steps in the preparation of an ammonium dihydrogen phosphate product are analyzed, so that the preparation processes of the special fertilizer for oats and the ammonium dihydrogen phosphate product are combined, and the two irrelevant processes are made complementary, thereby increasing the added value in the preparation process of the ammonium dihydrogen phosphate product, improving the purity of the ammonium dihydrogen phosphate product, saving element resources such as nitrogen, phosphorus and the like, and reducing the discharge amount of waste liquor; and nutritive elements in the waste liquor produced in the preparation process of the ammonium dihydrogen phosphate product are controlled and regulated, so that the elements such as nitrogen, phosphorus and the like in the waste liquor can satisfy growth requirements of oats, the purity of the ammonium dihydrogen phosphate product is increased to 93% or above, the residual nitrogen and phosphorus elements in the waste liquor are reduced, and the discharge amount of the waste liquor is reduced. Thus, the production method has remarkable environmental protection value and economic benefits.

The invention relates to the technical field of chemical engineering, particularly a production method for preparing tricalcium phosphate and coproducing a special fertilizer for rye. The effective absorption amounts of nitrogen, phosphorus and potassium are analyzed according to the fertilizer demanded by the rye, and the contents of the elements in the production process are regulated and matched, so that the prepared combined-state compound fertilizer can maximally satisfy the demands of rye, thereby lowering the overhigh cost due to improper element matching in the compound fertilizer production and further avoiding the environment pollution due to solidification of the compound fertilizer since excessive elements are added into the soil. By adjusting the component contents of the filtrate, the waste liquid in the chemical product production process is used as the raw material for producing the compound fertilizer, thereby avoiding the discharge of the waste liquid and lowering the production cost of the compound fertilizer. The production method has obvious environmental protection value and economic benefit.

The invention relates to the technical field of chemical industry, and particularly relates to a production method for preparing calcium hydrogen phosphate and by-producing a special fertilizer for cucurbit. According to the production method, the effective absorption amount of nitrogen, phosphorus and potassium elements is analyzed according to the fertilizer requirement of cucurbit, and element content is regulated and collocated in a production process course, so that a prepared compounded-form compound fertilizer can furthest meet the requirement of the cucurbit, excessively high cost caused due to improper element collocation in the production of the compound fertilizer is reduced, and environmental pollution caused by that the compound fertilizer is solidified by adding excessive elements to soil is further prevented; and a high-purity calcium hydrogen phosphate product can be produced in the preparation process of the special fertilizer for the cucurbit by controlling the process condition of the production, so that the impurity removal cost needed when the calcium hydrogen phosphate product is prepared by adopting the traditional wet-process phosphoric acid method is made up, the purity of the calcium hydrogen phosphate product reaches more than 96%, the production cost is reduced, and outstanding economic benefit is achieved.

The invention relates to a chemical technology field, discloses a preparation method of a fertilizer special for bananas, and aims at solving the technical problems that the ratio of nutrient elements in an existing fertilizer cannot meet the requirement of the bananas on the nutrient elements in a growth process, little fertilizer applied to the bananas is absorbed and utilized, part of element compounds are remained in soil, the soil structure is changed, and the soil hardening is caused. According to the method, phosphoric acid and carbomite react to generate an intermediate, the intermediate reacts with alkaline potassium, part of generated monopotassium phosphate is seeded out, the contents of nitrogen, and phosphorus and potassium in reaction liquid are adjusted and can meet the growth requirement of the bananas; and the fertilizer special for the bananas is low in production cost, and no waste liquid discharge and environment pollution in a production process are caused.

The invention relates to the technical field of chemical engineering, particularly to a production method for preparing a monocalcium phosphate byproduct used as a special fertilizer for chives. A fertilizer required by the chives is analyzed, nutrient elements contained in a residual waste liquid in a preparation technology of a monocalcium phosphate product are analyzed, preparation of the monocalcium phosphate product and preparation of the special fertilizer for the chives are organically combined together, the discharged waste liquid amount is reduced, a large amount of waste of nitrogen, phosphorus and calcium elements is avoided, and the crystallization separation amount of monocalcium phosphate in a monocalcium phosphate crystallization separation step is controlled, so that deep crystallization separation is unnecessary, the purity of the monocalcium phosphate product is further increased to be higher than 97.1%, and the cost for purifying the monocalcium phosphate product in the traditional preparation technology of the monocalcium phosphate product is reduced.

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing an ammonium dihydrogen phosphate byproduct as a special fertilizer for white gourd. Through changing the coefficients such as temperature and the like during the preparation of the ammonium dihydrogen phosphate via wet process phosphoric acid, the purity of the ammonium dihydrogen phosphate product can be improved and a compound fertilizer containing N, P and K combined states can be produced at the same time; through the production method, the purity of the ammonium dihydrogen phosphate can be improved and the produced fertilizer for white gourd is good in absorptivity; and meanwhile, formaldehyde is added into the filter liquor to prepare a controlled release compound fertilizer, so that the produced fertilizer for white gourd is capable of satisfying the nutrient requirements of all stages in the growth period, the yield of the white gourd is greatly increased and the compound fertilizer is efficient.

The invention relates to the technical field of chemical industry and particularly relates to a production method for preparation of calcium dihydrogen phosphate and by-production of a special fertilizer for cauliflowers. According to the production method, by analyzing the fertilizer demand situation of the cauliflowers and combining with the shortcomings in a preparation process of a calcium dihydrogen phosphate product, a preparation process of the calcium dihydrogen phosphate product and a preparation process of the special fertilizer for the cauliflowers are combined for production, so that the added value of the product in the preparation process of the calcium dihydrogen phosphate product is improved, the purity of the calcium dihydrogen phosphate product is improved, the waste of phosphorus and calcium element resources is reduced, the emission of waste liquid is reduced, and the serious pollution of the ecological environment is avoided.

The invention relates to the technical field of chemical industry, and particularly relates to a production method for preparing tripotassium phosphate and by-producing a special fertilizer for litchi. According to the production method, the effective absorption amount of nitrogen, phosphorus and potassium elements is analyzed according to the fertilizer requirement of litchi, and element content is regulated and collocated in a production process course, so that a prepared compounded-form compound fertilizer can furthest meet the requirement of the litchi, excessively high cost caused due to improper element collocation in the production of the compound fertilizer is reduced, and environmental pollution caused by that the compound fertilizer is solidified by adding excessive elements to soil is further prevented; and the impurity removal cost needed when a tripotassium phosphate product is prepared by adopting the traditional wet-process phosphoric acid method is made up, so that the purity of the prepared tripotassium phosphate product reaches more than 95%, the production cost is reduced by 93%, and outstanding economic benefit is achieved.

The invention relates to the technical field of chemical industry and particularly relates to a production method of monopotassium phosphate with a byproduct fertilizer specially used for towel gourd. The content of elements in the fertilizer specially used for towel gourd and the effective absorption of towel gourd to nitrogen, phosphorus and potassium elements are detected and analyzed, and the content of the elements used in the production process are regulated and matched, so that the prepared combined compound fertilizer can meet crop demands to the maximum extent, overhigh cost caused by improper matching of the elements in the production process of a compound fertilizer is reduced, and furthermore the problem that environment pollution caused by soil hardening due to use of the compound fertilizer containing too many elements in soil is avoided.

The invention discloses a method for preparing a special fertilizer for cockscomb. The method is to generate an intermediate by reacting phosphoric acid and carbonamide, and then inject ammonia gas into the intermediate to produce ammonium dihydrogen phosphate, so that a part of the dihydrogen phosphate Ammonium crystallization is used to adjust the ratio of nutrient elements in the reaction solution to meet the growth requirements of cockscomb, and add other nutrient elements required by cockscomb to prepare special fertilizer for cockscomb. This production method makes full use of raw materials, and no waste liquid is discharged to pollute the environment. By strictly controlling the amount of various parameters in the production process, the quality of the produced ammonium dihydrogen phosphate is better, and the cost of the prepared special fertilizer for cockscomb is lower. .

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing a special fertilizer for dasheen from diammonium hydrogen phosphate by-products. By virtue of analyzing requirements on nutrient elements of the special fertilizer for dasheen and combining the defects existing in a preparation process of diammonium hydrogen phosphate products, the preparation process of diammonium hydrogen phosphate products is combined with a preparation process of the special fertilizer for dasheen so that the two processes are complementary, wastage rates of nitrogen and phosphorus and the discharge amount of waste liquid in the preparation process of the diammonium hydrogen phosphate products are reduced and the production cost of diammonium hydrogen phosphate is reduced; by controlling parameters in process steps, the purity of the diammonium hydrogen phosphate products can reach 96% and meanwhile an efficient special nitrogen-phosphorus-potassium complex salt combined-state compound fertilizer is provided for dasheen.

The invention relates to the technical field of chemical industry, and in particular to a production method of monopotassium phosphate with a by-product welsh onion special fertilizer. Coefficients such as temperature in a wet process for preparation of monopotassium phosphate are changed to improve the purity of monopotassium phosphate product and to produce a compound fertilizer containing N, P and K in combined state; and a filtrate is adjusted into an acidic state, and is added into a formaldehyde solution to prepare a controlled release compound fertilizer. The method can improve the purity of monopotassium phosphate, besides the produced welsh onion special fertilizer has good absorption rate; and the produced welsh onion special fertilizer meets the nutritional needs of each period in the growth cycle, greatly increases welsh onion yield, and is a high efficient compound fertilizer.